IndustryPayments Data Builds a Healthier Tomorrow.
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

Covered recipient · General Payments record

ROGER CHAPMAN

Physician Assistants & Advanced Practice Nursing Providers Nurse Practitioner

NPI
1750805941
CMS profile
2827453
Location
TYLER, TX

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

General Payments · PY2021–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$46,425.30

147 records · 0 disputed

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $27,082.50 15
Honoraria $10,889.00 5
Travel and Lodging $5,199.72 18
Food and Beverage $2,579.08 108
Consulting Fee $675.00 1

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
ABBVIE INC. $30,163.46 62
Axsome Therapeutics, Inc. $11,665.45 15
Impel Pharmaceuticals LLC $3,318.82 34
PFIZER INC. $896.88 19
Teva Pharmaceuticals USA, Inc. $237.12 11
Averitas Pharma Inc. $74.66 3
Lundbeck LLC $45.47 2
Bioventus LLC $23.44 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $34,676.00 107
PY2022 $52,130.73 162
PY2023 $45,413.95 130
PY2024 $32,341.18 113
PY2025 $46,425.30 147

Payment records · PY2025 (147)

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

Program year 2025 2021202220232024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
ABBVIE INC. $20.79 12/18/2025 Food and Beverage No dispute reported 06/30/2026 1203197363 CMS
Axsome Therapeutics, Inc. $1,463.00 12/17/2025 Honoraria No dispute reported 06/30/2026 1235755115 CMS
Axsome Therapeutics, Inc. $111.16 12/17/2025 Food and Beverage No dispute reported 06/30/2026 1235778082 CMS
Impel Pharmaceuticals LLC $18.43 12/11/2025 Food and Beverage No dispute reported 06/30/2026 1211451866 CMS
PFIZER INC. $7.71 12/11/2025 Food and Beverage No dispute reported 06/30/2026 1231041064 CMS
ABBVIE INC. $1,925.00 12/04/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197356 CMS
Teva Pharmaceuticals USA, Inc. $20.45 12/04/2025 Food and Beverage No dispute reported 06/30/2026 1247327379 CMS
Lundbeck LLC $23.08 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1251883463 CMS
PFIZER INC. $8.19 12/02/2025 Food and Beverage No dispute reported 06/30/2026 1230980243 CMS
Teva Pharmaceuticals USA, Inc. $22.92 11/20/2025 Food and Beverage No dispute reported 06/30/2026 1247327371 CMS
ABBVIE INC. $126.00 11/18/2025 Travel and Lodging No dispute reported 06/30/2026 1203197339 CMS
ABBVIE INC. $12.71 11/18/2025 Food and Beverage No dispute reported 06/30/2026 1203197345 CMS
ABBVIE INC. $31.34 11/18/2025 Food and Beverage No dispute reported 06/30/2026 1203197350 CMS
ABBVIE INC. $1,925.00 11/13/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197334 CMS
Impel Pharmaceuticals LLC $20.73 11/13/2025 Food and Beverage No dispute reported 06/30/2026 1211452549 CMS
ABBVIE INC. $1,925.00 11/06/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197329 CMS
PFIZER INC. $4.59 11/06/2025 Food and Beverage No dispute reported 06/30/2026 1230790661 CMS
ABBVIE INC. $130.20 10/30/2025 Travel and Lodging No dispute reported 06/30/2026 1203197311 CMS
ABBVIE INC. $11.75 10/30/2025 Food and Beverage No dispute reported 06/30/2026 1203197317 CMS
ABBVIE INC. $34.99 10/30/2025 Food and Beverage No dispute reported 06/30/2026 1203197323 CMS
Averitas Pharma Inc. $14.82 10/28/2025 Food and Beverage No dispute reported 06/30/2026 1248559591 CMS
PFIZER INC. $6.81 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1230698693 CMS
ABBVIE INC. $17.44 10/23/2025 Food and Beverage No dispute reported 06/30/2026 1203197292 CMS
ABBVIE INC. $94.68 10/23/2025 Food and Beverage No dispute reported 06/30/2026 1203197299 CMS
ABBVIE INC. $105.00 10/23/2025 Travel and Lodging No dispute reported 06/30/2026 1203197305 CMS
Axsome Therapeutics, Inc. $6.05 10/23/2025 Food and Beverage No dispute reported 06/30/2026 1235563743 CMS
Teva Pharmaceuticals USA, Inc. $18.36 10/23/2025 Food and Beverage No dispute reported 06/30/2026 1247327351 CMS
Impel Pharmaceuticals LLC $22.74 10/22/2025 Food and Beverage No dispute reported 06/30/2026 1211450986 CMS
Impel Pharmaceuticals LLC $1,920.00 10/17/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1211450888 CMS
Impel Pharmaceuticals LLC $130.54 10/17/2025 Travel and Lodging No dispute reported 06/30/2026 1211450918 CMS
Axsome Therapeutics, Inc. $975.00 10/09/2025 Honoraria No dispute reported 06/30/2026 1235753643 CMS
ABBVIE INC. $4.65 10/08/2025 Food and Beverage No dispute reported 06/30/2026 1203197287 CMS
Averitas Pharma Inc. $41.35 10/08/2025 Food and Beverage No dispute reported 06/30/2026 1248559589 CMS
Axsome Therapeutics, Inc. $8.32 10/06/2025 Food and Beverage No dispute reported 06/30/2026 1235563747 CMS
Impel Pharmaceuticals LLC $8.72 10/03/2025 Food and Beverage No dispute reported 06/30/2026 1211450690 CMS
Impel Pharmaceuticals LLC $19.04 10/02/2025 Food and Beverage No dispute reported 06/30/2026 1211450662 CMS
PFIZER INC. $675.00 09/26/2025 Consulting Fee No dispute reported 06/30/2026 1230180002 CMS
ABBVIE INC. $1,925.00 09/25/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197281 CMS
ABBVIE INC. $6.52 09/23/2025 Food and Beverage No dispute reported 06/30/2026 1203197275 CMS
Impel Pharmaceuticals LLC $12.33 09/22/2025 Food and Beverage No dispute reported 06/30/2026 1211450522 CMS
Impel Pharmaceuticals LLC $365.25 09/19/2025 Travel and Lodging No dispute reported 06/30/2026 1211450432 CMS
Impel Pharmaceuticals LLC $27.06 09/19/2025 Travel and Lodging No dispute reported 06/30/2026 1211450434 CMS
Impel Pharmaceuticals LLC $343.50 09/19/2025 Food and Beverage No dispute reported 06/30/2026 1211450436 CMS
Teva Pharmaceuticals USA, Inc. $23.33 09/17/2025 Food and Beverage No dispute reported 06/30/2026 1247327335 CMS
Averitas Pharma Inc. $18.49 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1248559587 CMS
PFIZER INC. $8.90 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1230255507 CMS
ABBVIE INC. $1,375.00 09/11/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197269 CMS
Impel Pharmaceuticals LLC $24.95 09/11/2025 Food and Beverage No dispute reported 06/30/2026 1211450290 CMS
ABBVIE INC. $32.20 09/10/2025 Food and Beverage No dispute reported 06/30/2026 1203197257 CMS
ABBVIE INC. $130.20 09/10/2025 Travel and Lodging No dispute reported 06/30/2026 1203197263 CMS
ABBVIE INC. $7.66 09/05/2025 Food and Beverage No dispute reported 06/30/2026 1203197252 CMS
Impel Pharmaceuticals LLC $22.96 09/03/2025 Food and Beverage No dispute reported 06/30/2026 1211452415 CMS
ABBVIE INC. $30.32 09/02/2025 Food and Beverage No dispute reported 06/30/2026 1203197247 CMS
PFIZER INC. $14.37 08/28/2025 Food and Beverage No dispute reported 06/30/2026 1230243752 CMS
Axsome Therapeutics, Inc. $2,113.00 08/27/2025 Honoraria No dispute reported 06/30/2026 1235756035 CMS
Axsome Therapeutics, Inc. $124.63 08/27/2025 Food and Beverage No dispute reported 06/30/2026 1235774284 CMS
Axsome Therapeutics, Inc. $194.35 08/27/2025 Travel and Lodging No dispute reported 06/30/2026 1235811105 CMS
Impel Pharmaceuticals LLC $24.14 08/25/2025 Food and Beverage No dispute reported 06/30/2026 1211450024 CMS
Teva Pharmaceuticals USA, Inc. $21.69 08/21/2025 Food and Beverage No dispute reported 06/30/2026 1247327321 CMS
Impel Pharmaceuticals LLC $21.52 08/18/2025 Food and Beverage No dispute reported 06/30/2026 1211452391 CMS
PFIZER INC. $8.35 08/15/2025 Food and Beverage No dispute reported 06/30/2026 1230278349 CMS
Bioventus LLC $23.44 08/12/2025 Food and Beverage No dispute reported 06/30/2026 1226870838 CMS
PFIZER INC. $10.26 08/11/2025 Food and Beverage No dispute reported 06/30/2026 1230210832 CMS
ABBVIE INC. $9.13 08/08/2025 Food and Beverage No dispute reported 06/30/2026 1203197241 CMS
Impel Pharmaceuticals LLC $18.82 08/08/2025 Food and Beverage No dispute reported 06/30/2026 1211449748 CMS
ABBVIE INC. $687.50 08/07/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197236 CMS
Impel Pharmaceuticals LLC $24.82 08/07/2025 Food and Beverage No dispute reported 06/30/2026 1211449708 CMS
ABBVIE INC. $5.62 08/01/2025 Food and Beverage No dispute reported 06/30/2026 1203197229 CMS
Impel Pharmaceuticals LLC $13.94 07/24/2025 Food and Beverage No dispute reported 06/30/2026 1211449294 CMS
Impel Pharmaceuticals LLC $13.94 07/24/2025 Food and Beverage No dispute reported 06/30/2026 1211449306 CMS
Impel Pharmaceuticals LLC $18.36 07/21/2025 Food and Beverage No dispute reported 06/30/2026 1211449132 CMS
Impel Pharmaceuticals LLC $18.36 07/21/2025 Food and Beverage No dispute reported 06/30/2026 1211449160 CMS
ABBVIE INC. $8.56 07/17/2025 Food and Beverage No dispute reported 06/30/2026 1203197223 CMS
Axsome Therapeutics, Inc. $4,875.00 07/17/2025 Honoraria No dispute reported 06/30/2026 1235752730 CMS
Impel Pharmaceuticals LLC $22.48 07/10/2025 Food and Beverage No dispute reported 06/30/2026 1211448748 CMS
Impel Pharmaceuticals LLC $22.48 07/10/2025 Food and Beverage No dispute reported 06/30/2026 1211448780 CMS
PFIZER INC. $19.96 07/08/2025 Food and Beverage No dispute reported 06/30/2026 1230139261 CMS
Teva Pharmaceuticals USA, Inc. $20.47 07/03/2025 Food and Beverage No dispute reported 06/30/2026 1247327307 CMS
ABBVIE INC. $12.58 06/27/2025 Food and Beverage No dispute reported 06/30/2026 1203197211 CMS
Axsome Therapeutics, Inc. $7.60 06/27/2025 Food and Beverage No dispute reported 06/30/2026 1235434984 CMS
Axsome Therapeutics, Inc. $1,463.00 06/26/2025 Honoraria No dispute reported 06/30/2026 1235752360 CMS
Axsome Therapeutics, Inc. $63.60 06/26/2025 Food and Beverage No dispute reported 06/30/2026 1235771809 CMS
Axsome Therapeutics, Inc. $29.03 06/23/2025 Food and Beverage No dispute reported 06/30/2026 1235310963 CMS
ABBVIE INC. $1,925.00 06/17/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197205 CMS
Teva Pharmaceuticals USA, Inc. $20.30 06/12/2025 Food and Beverage No dispute reported 06/30/2026 1247327291 CMS
ABBVIE INC. $1,925.00 06/10/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197200 CMS
PFIZER INC. $7.76 06/09/2025 Food and Beverage No dispute reported 06/30/2026 1230070544 CMS
Axsome Therapeutics, Inc. $198.23 06/07/2025 Travel and Lodging No dispute reported 06/30/2026 1235803540 CMS
Axsome Therapeutics, Inc. $33.48 06/07/2025 Travel and Lodging No dispute reported 06/30/2026 1235803706 CMS
ABBVIE INC. $6.75 06/06/2025 Food and Beverage No dispute reported 06/30/2026 1203197194 CMS
PFIZER INC. $8.00 06/06/2025 Food and Beverage No dispute reported 06/30/2026 1230066537 CMS
ABBVIE INC. $1,925.00 06/03/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197188 CMS
ABBVIE INC. $7.12 05/30/2025 Food and Beverage No dispute reported 06/30/2026 1203197183 CMS
ABBVIE INC. $15.78 05/29/2025 Food and Beverage No dispute reported 06/30/2026 1203197165 CMS
ABBVIE INC. $0.02 05/29/2025 Food and Beverage No dispute reported 06/30/2026 1203197171 CMS
ABBVIE INC. $130.20 05/29/2025 Travel and Lodging No dispute reported 06/30/2026 1203197177 CMS
PFIZER INC. $14.72 05/28/2025 Food and Beverage No dispute reported 06/30/2026 1229968934 CMS
ABBVIE INC. $19.81 05/20/2025 Food and Beverage No dispute reported 06/30/2026 1203197153 CMS
ABBVIE INC. $114.80 05/20/2025 Travel and Lodging No dispute reported 06/30/2026 1203197159 CMS
ABBVIE INC. $17.37 05/15/2025 Food and Beverage No dispute reported 06/30/2026 1203197140 CMS
ABBVIE INC. $1,326.67 05/15/2025 Travel and Lodging No dispute reported 06/30/2026 1203197147 CMS
PFIZER INC. $19.54 05/13/2025 Food and Beverage No dispute reported 06/30/2026 1229993358 CMS
ABBVIE INC. $4.44 05/08/2025 Food and Beverage No dispute reported 06/30/2026 1203197134 CMS
Impel Pharmaceuticals LLC $23.06 05/05/2025 Food and Beverage No dispute reported 06/30/2026 1211448215 CMS
Impel Pharmaceuticals LLC $21.90 05/02/2025 Food and Beverage No dispute reported 06/30/2026 1211448207 CMS
Teva Pharmaceuticals USA, Inc. $22.61 05/01/2025 Food and Beverage No dispute reported 06/30/2026 1247327271 CMS
Lundbeck LLC $22.39 04/24/2025 Food and Beverage No dispute reported 06/30/2026 1251883461 CMS
PFIZER INC. $14.20 04/23/2025 Food and Beverage No dispute reported 06/30/2026 1230087645 CMS
Impel Pharmaceuticals LLC $19.80 04/21/2025 Food and Beverage No dispute reported 06/30/2026 1211448011 CMS
ABBVIE INC. $4.49 04/11/2025 Food and Beverage No dispute reported 06/30/2026 1203197130 CMS
Impel Pharmaceuticals LLC $11.12 04/10/2025 Food and Beverage No dispute reported 06/30/2026 1211447899 CMS
Impel Pharmaceuticals LLC $13.79 04/10/2025 Food and Beverage No dispute reported 06/30/2026 1211447901 CMS
PFIZER INC. $13.73 04/10/2025 Food and Beverage No dispute reported 06/30/2026 1230083494 CMS
Teva Pharmaceuticals USA, Inc. $20.04 04/10/2025 Food and Beverage No dispute reported 06/30/2026 1247327245 CMS
ABBVIE INC. $1,925.00 04/07/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197123 CMS
Impel Pharmaceuticals LLC $20.11 04/03/2025 Food and Beverage No dispute reported 06/30/2026 1211447817 CMS
PFIZER INC. $5.16 04/03/2025 Food and Beverage No dispute reported 06/30/2026 1230068272 CMS
PFIZER INC. $24.88 04/01/2025 Food and Beverage No dispute reported 06/30/2026 1229998072 CMS
Impel Pharmaceuticals LLC $10.67 03/31/2025 Food and Beverage No dispute reported 06/30/2026 1211452175 CMS
ABBVIE INC. $9.12 03/28/2025 Food and Beverage No dispute reported 06/30/2026 1203197120 CMS
ABBVIE INC. $3.64 03/26/2025 Food and Beverage No dispute reported 06/30/2026 1203197115 CMS
ABBVIE INC. $1,925.00 03/18/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197081 CMS
ABBVIE INC. $1,925.00 03/18/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197087 CMS
ABBVIE INC. $1,925.00 03/18/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197093 CMS
ABBVIE INC. $14.18 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1203197099 CMS
ABBVIE INC. $12.71 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1203197104 CMS
ABBVIE INC. $126.00 03/18/2025 Travel and Lodging No dispute reported 06/30/2026 1203197110 CMS
Impel Pharmaceuticals LLC $15.78 03/14/2025 Food and Beverage No dispute reported 06/30/2026 1211447707 CMS
ABBVIE INC. $6.11 03/06/2025 Food and Beverage No dispute reported 06/30/2026 1203197075 CMS
Teva Pharmaceuticals USA, Inc. $16.99 03/06/2025 Food and Beverage No dispute reported 06/30/2026 1247327229 CMS
ABBVIE INC. $120.87 03/05/2025 Food and Beverage No dispute reported 06/30/2026 1203197052 CMS
ABBVIE INC. $928.67 03/05/2025 Travel and Lodging No dispute reported 06/30/2026 1203197058 CMS
ABBVIE INC. $18.44 03/05/2025 Food and Beverage No dispute reported 06/30/2026 1203197063 CMS
ABBVIE INC. $928.67 03/05/2025 Travel and Lodging No dispute reported 06/30/2026 1203197069 CMS
ABBVIE INC. $1,925.00 03/04/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1203197046 CMS
ABBVIE INC. $94.72 02/25/2025 Food and Beverage No dispute reported 06/30/2026 1203197035 CMS
ABBVIE INC. $105.00 02/25/2025 Travel and Lodging No dispute reported 06/30/2026 1203197041 CMS
ABBVIE INC. $6.02 02/21/2025 Food and Beverage No dispute reported 06/30/2026 1203197029 CMS
Teva Pharmaceuticals USA, Inc. $29.96 02/20/2025 Food and Beverage No dispute reported 06/30/2026 1247327227 CMS
ABBVIE INC. $18.36 02/18/2025 Food and Beverage No dispute reported 06/30/2026 1203197016 CMS
ABBVIE INC. $99.40 02/18/2025 Travel and Lodging No dispute reported 06/30/2026 1203197022 CMS
ABBVIE INC. $10.09 02/14/2025 Food and Beverage No dispute reported 06/30/2026 1203197010 CMS
Impel Pharmaceuticals LLC $24.97 02/04/2025 Food and Beverage No dispute reported 06/30/2026 1211447504 CMS
ABBVIE INC. $19.17 01/30/2025 Food and Beverage No dispute reported 06/30/2026 1203197004 CMS
PFIZER INC. $24.75 01/29/2025 Food and Beverage No dispute reported 06/30/2026 1229977555 CMS
Impel Pharmaceuticals LLC $11.74 01/24/2025 Food and Beverage No dispute reported 06/30/2026 1211447424 CMS
Impel Pharmaceuticals LLC $10.77 01/06/2025 Food and Beverage No dispute reported 06/30/2026 1211447312 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2021, 2022, 2023, 2024, 2025
Source files
Dataset page · Bulk file · PY2021 , PY2022 , PY2023 , PY2024 , PY2025
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.

Cite this record.

Permalink https://industrypayments.org/provider/npi-1750805941

Plain
ROGER CHAPMAN, NPI 1750805941. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1750805941.
APA 7
IndustryPayments. (2026). ROGER CHAPMAN, NPI 1750805941 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1750805941
Bluebook
ROGER CHAPMAN, NPI 1750805941, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1750805941.

Source: Centers for Medicare & Medicaid Services, Open Payments.