David Mark Nidorf, MD
Family Medicine Physician · San Francisco, CA
David Mark Nidorf, MD is a family medicine physician with a practice address in San Francisco, California, and NPI 1336186121, issued on Jun 1, 2006. Check the license (California A49983, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Mark Nidorf
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- A49983 CA
251090 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3555 Cesar Chavez, San Francisco, CA 94110
- Phone
- (415) 641-6625
- Enumerated
- Jun 1, 2006
- Record last updated
- Nov 1, 2022
- Medicaid ID
- 00A499830 CA
- Medicare enrollment
- Enrolled (PECOS I20090427000394); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 3555 Cesar Chavez
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Mark Nidorf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A49983Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
262 Medicare Part D claims for 195 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass30 claims
- Ondansetron Odt27 claims
- Oxycodone-Acetaminophen26 claims
- Prednisone23 claims
- Cephalexin16 claims
- Cefuroxime15 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): 80 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).
Bills Medicare through one group practice
- Emergency Physician Services OF New York, P.C.Utica, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Mark Nidorf among 17,133 family medicine physician records in California
David Mark Nidorf, MD is one of 17,133 family medicine 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1990 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joaquin Barahona, M. D.San Francisco, CA 941101205895133
- Luis Bonilla, MDSan Francisco, CA 941101629019708
- Christopher Bositis, MDSan Francisco, CA 941101427054493
- Romilda Foresti-Lorente, MDSan Francisco, CA 941101164455374
- Steven Lawton, MDSan Francisco, CA 941101366486748
- Todd May, MDSan Francisco, CA 941101679528335
- Pooja Mittal, DOSan Francisco, CA 941101215916200
- Sacha Niemi, MDSan Francisco, CA 941101154359982
Common questions
What is David Mark Nidorf, MD's NPI number?
David Mark Nidorf, MD's National Provider Identifier (NPI) is 1336186121, issued on Jun 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Mark Nidorf, MD located?
The NPPES record lists a practice address at 3555 Cesar Chavez, San Francisco, CA, 94110. Phone: (415) 641-6625. Providers update this record themselves, so call before visiting.
How can I verify David Mark Nidorf, MD's license?
NPPES lists California license number A49983, 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 David Mark Nidorf, MD prescribe under Medicare Part D?
In 2024, David Mark Nidorf, MD had 262 Medicare Part D claims for 195 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is David Mark Nidorf, MD's MIPS final score?
The 2023 MIPS final score is 80 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.