Shawn Kent Hassler, M.D.
Infectious Disease Physician · San Francisco, CA
Shawn Kent Hassler, M.D. is an infectious disease physician with a practice address in San Francisco, California, and NPI 1427122928, issued on Nov 17, 2006. Check the license (California A062683, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Shawn Kent Hassler
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A062683 CA
Self-reported in NPPES; status is on the state search - Practice location
- 870 Market St, San Francisco, CA 94102
- Phone
- (415) 397-0700
- Enumerated
- Nov 17, 2006
- Record last updated
- Apr 9, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (415) 397-6802
- Medicaid ID
- CNC324854 CA
- Medicare enrollment
- Enrolled (PECOS I20040324000558); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 870 Market St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Shawn Kent Hassler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A062683Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12.3 times the Medicare Part D claims of the average infectious disease physician in 2024
8,492 Medicare Part D claims for 326 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. 278 claims were for opioids.
Most prescribed
- Biktarvy459 claims
- Atorvastatin Calcium353 claims
- Tivicay180 claims
- Dovato175 claims
- Valacyclovir175 claims
- Acyclovir173 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 27.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $64,956.84
211 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Shawn Kent Hassler among 1,119 infectious disease physician records in California
Shawn Kent Hassler, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1995 · median 2003 among the 735 with a school on file
- Record last updated2008 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in San Francisco → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Tomas Aragon, M.D., DR.P.H.San Francisco, CA 941021053633149
- Farrell Tobolowsky, D.O.San Francisco, CA 941021154740389
- Uri Lopatin, M.D,San Francisco, CA 941031508840406
- Kathy ThompsonSan Francisco, CA 941031407042955
- Charles Chiu, M.D., PH.D.San Francisco, CA 941071598797268
- Helen Gunthorpe, M.D.San Francisco, CA 941091588760565
- Layli Jamali, M.D.San Francisco, CA 941091598059644
- Saman Kannangara, MDSan Francisco, CA 941091508893421
Common questions
What is Shawn Kent Hassler, M.D.'s NPI number?
Shawn Kent Hassler, M.D.'s National Provider Identifier (NPI) is 1427122928, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Shawn Kent Hassler, M.D. located?
The NPPES record lists a practice address at 870 Market St, San Francisco, CA, 94102. Phone: (415) 397-0700. Providers update this record themselves, so call before visiting.
How can I verify Shawn Kent Hassler, M.D.'s license?
NPPES lists California license number A062683, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Shawn Kent Hassler, M.D. prescribe under Medicare Part D?
In 2024, Shawn Kent Hassler, M.D. had 8,492 Medicare Part D claims for 326 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Shawn Kent Hassler, M.D.'s MIPS final score?
The 2023 MIPS final score is 27.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.