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

SHAWN HASSLER

Allopathic & Osteopathic Physicians Internal Medicine Infectious Disease

NPI
1427122928
CMS profile
291581
Location
SAN FRANCISCO, CA

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

$31,002.22

102 records · 0 disputed

Summary and payment records

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

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“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

By paying entity

PY2021 · entire year · sorted by reported total

Page 1 of 3; records 1–50 of 102 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

SHAWN HASSLER

NPI 1427122928 · CMS profile ID 291581

Allopathic & Osteopathic Physicians / Internal Medicine / Infectious Disease

SAN FRANCISCO, CA

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 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1427122928?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
SHAWN HASSLER, NPI 1427122928, CMS profile ID 291581. 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 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1427122928?year=2021&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
APA 7
IndustryPayments. (2026). SHAWN HASSLER, NPI 1427122928, CMS profile ID 291581. 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 3; records 1–50 of 102 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1427122928?year=2021&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
Bluebook
SHAWN HASSLER, NPI 1427122928, CMS profile ID 291581, 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 3; records 1–50 of 102 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-1427122928?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

102 matching records · $31,002.22 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 102 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 102.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Acerus Pharmaceuticals Corporation $14.2512/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 777480467 CMS
Gilead Sciences, Inc. $33.1312/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206569 CMS
ViiV Healthcare Company $23.3012/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803235537 CMS
ViiV Healthcare Company $9.7712/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803237717 CMS
AbbVie Inc. $17.1812/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794771289 CMS
AbbVie Inc. $17.1812/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794771293 CMS
Antares Pharma, Inc. $26.0612/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 827496571 CMS
Janssen Products, LP $99.0012/15/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 788223297 CMS
Gilead Sciences, Inc. $860.0012/14/2021 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 Delay: No
Change: UNCHANGED
06/30/2026 845854275 CMS
Gilead Sciences, Inc. $1,730.0012/10/2021 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 Delay: No
Change: UNCHANGED
06/30/2026 845854273 CMS
Gilead Sciences, Inc. $14.3912/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206567 CMS
Gilead Sciences, Inc. $95.6912/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206565 CMS
Gilead Sciences, Inc. $25.5512/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206563 CMS
AbbVie Inc. $23.6811/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 794771285 CMS
EMD Serono, Inc. $19.0311/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 849145351 CMS
ViiV Healthcare Company $920.0011/16/2021 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803235365 CMS
ViiV Healthcare Company $13.5711/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803237219 CMS
Gilead Sciences, Inc. $22.0411/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206561 CMS
Janssen Biotech, Inc. $13.9811/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 788223289 CMS
Gilead Sciences, Inc. $24.4610/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206559 CMS
Gilead Sciences, Inc. $25.9510/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206557 CMS
Gilead Sciences, Inc. $16.4610/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206555 CMS
Gilead Sciences, Inc. $22.3110/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206553 CMS
ViiV Healthcare Company $25.3110/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803237881 CMS
ViiV Healthcare Company $14.2910/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803234111 CMS
ViiV Healthcare Company $23.9310/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803237791 CMS
Merck Sharp & Dohme Corporation $23.7910/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848354001 CMS
Theratechnologies Inc. $500.0010/13/2021 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 834897993 CMS
EMD Serono, Inc. $23.1510/12/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 849214409 CMS
Eisai Inc. $23.7910/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 818021185 CMS
Gilead Sciences, Inc. $5.9210/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206551 CMS
ViiV Healthcare Company $17.7910/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803235505 CMS
ViiV Healthcare Company $1,800.0010/05/2021 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 Delay: No
Change: UNCHANGED
06/30/2026 803235803 CMS
Gilead Sciences, Inc. $22.1310/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206549 CMS
Janssen Pharmaceuticals, Inc $28.4809/30/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 788223295 CMS
Janssen Biotech, Inc. $13.6809/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 788223291 CMS
Gilead Sciences, Inc. $22.1909/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206547 CMS
Gilead Sciences, Inc. $23.0209/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206545 CMS
Gilead Sciences, Inc. $18.4009/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206543 CMS
ViiV Healthcare Company $10.0309/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803236165 CMS
Gilead Sciences, Inc. $1,660.0009/15/2021 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 Delay: No
Change: UNCHANGED
06/30/2026 845854271 CMS
ViiV Healthcare Company $13.9009/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803234933 CMS
ViiV Healthcare Company $2,100.0008/31/2021 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 Delay: No
Change: UNCHANGED
06/30/2026 803235677 CMS
ViiV Healthcare Company $11.8508/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803235265 CMS
Gilead Sciences, Inc. $23.6908/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206541 CMS
ViiV Healthcare Company $23.4008/04/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803237243 CMS
ViiV Healthcare Company $13.9608/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 803235431 CMS
Merck Sharp & Dohme Corporation $13.4607/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848520063 CMS
Gilead Sciences, Inc. $20.0507/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206539 CMS
Gilead Sciences, Inc. $25.0307/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 848206537 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $107,860.28 320
PY2020 $31,069.79 96
PY2021 $31,002.22 102
PY2022 $54,312.10 157
PY2023 $79,317.32 195
PY2024 $64,995.55 213
PY2025 $64,622.36 246

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.