Michael David Thier, M.D.
Ophthalmology Physician · San Francisco, CA
Michael David Thier, M.D. is an ophthalmology physician with a practice address in San Francisco, California, and NPI 1831295427, issued on Sep 15, 2006. Check the license (California A20927, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael David Thier
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A20927 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2300 California St, San Francisco, CA 94115
- Phone
- (415) 425-3862
- Enumerated
- Sep 15, 2006
- Record last updated
- Apr 23, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (415) 563-9770
- Medicare enrollment
- Enrolled (PECOS I20090423000317); accepts Medicare assignment
- Medical or professional school
- University Of Florida College Of Medicine, 1962
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 2300 California St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael David Thier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A20927Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average ophthalmology physician in 2024
143 Medicare Part D claims for 30 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Timolol Maleate32 claims
- Latanoprost26 claims
- Erythromycin13 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): 82.9 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).
Bills Medicare through one group practice
- San Francisco Eye Institute IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael David Thier among 2,899 ophthalmology physician records in California
Michael David Thier, M.D. is one of 2,899 ophthalmology 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 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1962 · median 2001 among the 1,907 with a school on file
- Record last updated2009 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in San Francisco → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Everett Ai, MDSan Francisco, CA 941151235130618
- Arthur Allen, MDSan Francisco, CA 941151255332334
- Mary Ann Banez, M.D.San Francisco, CA 941151558323360
- Donald Fletcher, M.D.San Francisco, CA 941151689633638
- Anne Fung, MDSan Francisco, CA 941151588665939
- David Heiden, MDSan Francisco, CA 941151053312108
- Danny Lin, MDSan Francisco, CA 941151871595710
- Karen Oxford, MDSan Francisco, CA 941151396746749
Common questions
What is Michael David Thier, M.D.'s NPI number?
Michael David Thier, M.D.'s National Provider Identifier (NPI) is 1831295427, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael David Thier, M.D. located?
The NPPES record lists a practice address at 2300 California St, San Francisco, CA, 94115. Phone: (415) 425-3862. Providers update this record themselves, so call before visiting.
How can I verify Michael David Thier, M.D.'s license?
NPPES lists California license number A20927, 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 Michael David Thier, M.D. prescribe under Medicare Part D?
In 2024, Michael David Thier, M.D. had 143 Medicare Part D claims for 30 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Michael David Thier, M.D.'s MIPS final score?
The 2023 MIPS final score is 82.9 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.