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

Covered recipient · General Payments record

WILLIAM B CLARK

Allopathic & Osteopathic Physicians Obstetrics & Gynecology

NPI
1235202599
CMS profile
147121
Location
LATHAM, NY

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.

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General Payments · PY2021 · Entire year

$826.33

61 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

“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.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . 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 ↗

By nature of payment

PY2021 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $809.98 60
Education $16.35 1

By paying entity

PY2021 · entire year · sorted by reported total

Paying entityAmountRecords
AbbVie Inc. $389.50 30
Avion Pharmaceuticals $119.15 10
PFIZER INC. $75.29 5
Mylan Pharmaceuticals Inc. $52.23 3
CooperSurgical, Inc. $41.50 3
TherapeuticsMD, Inc. $39.23 3
Exeltis, USA Inc. $39.13 2
MAYNE PHARMA INC. $28.84 2
Myovant Sciences Inc. $16.35 1
MEDICEM INC. $14.00 1
Agile Therapeutics, Inc. $11.11 1

Page 1 of 2; records 1–50 of 61 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

WILLIAM B CLARK

NPI 1235202599 · CMS profile ID 147121

Allopathic & Osteopathic Physicians / Obstetrics & Gynecology

LATHAM, NY

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.

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.

General Payments, PY2021; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 1 of 2; records 1–50 of 61 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1235202599?year=2021&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain
WILLIAM B CLARK, NPI 1235202599, CMS profile ID 147121. General Payments, PY2021; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 2; records 1–50 of 61 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1235202599?year=2021&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
APA 7
IndustryPayments. (2026). WILLIAM B CLARK, NPI 1235202599, CMS profile ID 147121. General Payments, PY2021; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 2; records 1–50 of 61 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1235202599?year=2021&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
Bluebook
WILLIAM B CLARK, NPI 1235202599, CMS profile ID 147121, IndustryPayments, General Payments, PY2021; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 1 of 2; records 1–50 of 61 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202. https://industrypayments.org/provider/npi-1235202599?year=2021&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

Payment records · PY2021

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

General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

61 matching records · $826.33 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 61 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 61.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
CooperSurgical, Inc. $13.2512/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 826658551 CMS
AbbVie Inc. $3.5912/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264653 CMS
AbbVie Inc. $20.9411/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264651 CMS
Mylan Pharmaceuticals Inc. $16.4511/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 965468475 CMS
AbbVie Inc. $24.8611/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264649 CMS
Avion Pharmaceuticals $10.3711/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423393 CMS
AbbVie Inc. $21.3011/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264647 CMS
AbbVie Inc. $10.8711/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264645 CMS
AbbVie Inc. $3.2611/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264643 CMS
TherapeuticsMD, Inc. $14.6011/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 844945253 CMS
Mylan Pharmaceuticals Inc. $19.0210/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 965467433 CMS
PFIZER INC. $22.0010/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 832989949 CMS
AbbVie Inc. $1.6710/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264641 CMS
TherapeuticsMD, Inc. $13.3210/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 844945247 CMS
AbbVie Inc. $10.3810/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264639 CMS
AbbVie Inc. $7.2809/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264637 CMS
MAYNE PHARMA INC. $14.4609/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 849474347 CMS
AbbVie Inc. $4.3809/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264635 CMS
PFIZER INC. $11.6209/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 832887453 CMS
CooperSurgical, Inc. $12.0809/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 826658539 CMS
PFIZER INC. $17.2209/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 832879951 CMS
AbbVie Inc. $5.6208/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264633 CMS
AbbVie Inc. $18.8508/18/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264631 CMS
AbbVie Inc. $20.5208/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264629 CMS
Mylan Pharmaceuticals Inc. $16.7608/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 965465357 CMS
AbbVie Inc. $20.2508/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264625 CMS
AbbVie Inc. $3.3708/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264627 CMS
MAYNE PHARMA INC. $14.3807/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 849507259 CMS
Myovant Sciences Inc. $16.3507/26/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 834948797 CMS
AbbVie Inc. $23.8907/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264623 CMS
AbbVie Inc. $24.8107/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264621 CMS
AbbVie Inc. $17.4506/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264619 CMS
PFIZER INC. $13.0506/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 832532143 CMS
AbbVie Inc. $9.2106/18/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264617 CMS
AbbVie Inc. $10.0306/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264615 CMS
Exeltis, USA Inc. $13.5605/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 806211355 CMS
AbbVie Inc. $16.6705/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264613 CMS
PFIZER INC. $11.4005/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 832517323 CMS
Avion Pharmaceuticals $12.3605/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423389 CMS
AbbVie Inc. $9.7405/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264611 CMS
AbbVie Inc. $21.9004/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264609 CMS
Avion Pharmaceuticals $13.3404/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423391 CMS
AbbVie Inc. $7.9704/23/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264607 CMS
Avion Pharmaceuticals $13.3304/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423379 CMS
Avion Pharmaceuticals $12.5403/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423381 CMS
AbbVie Inc. $8.9003/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264605 CMS
Avion Pharmaceuticals $12.3903/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423387 CMS
AbbVie Inc. $4.6503/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794264603 CMS
Exeltis, USA Inc. $25.5703/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 806181635 CMS
Avion Pharmaceuticals $6.1702/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 845423383 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $842.42 33
PY2020 $350.68 29
PY2021 $826.33 61
PY2022 $1,307.08 79
PY2023 $923.77 42
PY2024 $1,132.02 49
PY2025 $712.07 34

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
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
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.