William Joseph Estrin, M.D.
Neurology Physician · San Francisco, CA
William Joseph Estrin, M.D. is a neurology physician with a practice address in San Francisco, California, and NPI 1952482390, issued on Oct 18, 2006. Check the license (California G53425, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Joseph Estrin
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- G53425 CA
Self-reported in NPPES; status is on the state search - Practice location
- 490 Post St, San Francisco, CA 94102
- Phone
- (415) 268-0054
- Enumerated
- Oct 18, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 986-3884
- Medicare enrollment
- Enrolled (PECOS I20050729000920); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1973
- Entity
- Type 1 · individual
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Verify William Joseph Estrin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G53425Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average neurology physician in 2024
197 Medicare Part D claims for 49 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Carbidopa-Levodopa44 claims
- Levetiracetam31 claims
- Memantine Hcl25 claims
- Donepezil Hcl15 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 practice group's MIPS final score for 2023 (Medicare payment program): 99 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $128.87
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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.
William Joseph Estrin among 2,339 neurology physician records in California
William Joseph Estrin, M.D. is one of 2,339 neurology physician records with a practice address in California. 81% 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, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1973 · median 2006 among the 1,628 with a school on file
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in San Francisco → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Gregory Pauxtis, M.D.San Francisco, CA 941021992868723
- Ferhad Ahmad, MDSan Francisco, CA 941081831484930
- Nada HindiyehSan Francisco, CA 941081831320720
- Joy Meng, M.D.San Francisco, CA 941081174786123
- Ahmad Ata, MDSan Francisco, CA 941091972525939
- Matthew Butrum, MDSan Francisco, CA 941091710187133
- Floyd Fortuin, MDSan Francisco, CA 941091043381098
- Kenneth Laxer, M.D.San Francisco, CA 941091861460990
Common questions
What is William Joseph Estrin, M.D.'s NPI number?
William Joseph Estrin, M.D.'s National Provider Identifier (NPI) is 1952482390, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Joseph Estrin, M.D. located?
The NPPES record lists a practice address at 490 Post St, San Francisco, CA, 94102. Phone: (415) 268-0054. Providers update this record themselves, so call before visiting.
How can I verify William Joseph Estrin, M.D.'s license?
NPPES lists California license number G53425, 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 William Joseph Estrin, M.D. prescribe under Medicare Part D?
In 2024, William Joseph Estrin, M.D. had 197 Medicare Part D claims for 49 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is William Joseph Estrin, M.D.'s MIPS final score?
The 2023 MIPS final score is 99 of 100, reported for the practice group. 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.