Allan Steven Marks, M.D.
Pediatrics Physician · San Francisco, CA
Allan Steven Marks, M.D. is a pediatrics physician with a practice address in San Francisco, California, and NPI 1285762021, issued on Mar 1, 2007. Check the license (California G45261, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allan Steven Marks
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License numbers
- G45261 CA
13045 HI
MD186103 OR
Self-reported in NPPES; status is on the state search - Practice location
- 650 5TH St Ste 405, San Francisco, CA 94107
- Phone
- (415) 231-5333
- Enumerated
- Mar 1, 2007
- Record last updated
- Sep 17, 2024
- Fax
- (415) 231-5332
- Medicare enrollment
- Enrolled (PECOS I20220606000634); may accept Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 650 5TH St Ste 405
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allan Steven Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45261Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average pediatrics physician in 2024
1,166 Medicare Part D claims for 148 beneficiaries, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril68 claims
- Amlodipine Besylate55 claims
- Levothyroxine Sodium45 claims
- Mounjaro45 claims
- Albuterol Sulfate Hfa39 claims
- Amoxicillin28 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.
Allan Steven Marks among 9,272 pediatrics physician records in California
Allan Steven Marks, M.D. is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 43% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Graduated1980 · median 2012 among the 754 with a school on file
- Record last updated2024 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
514 pediatrics physician records list a practice address in San Francisco
They are 514 of the 38,143 NPPES records with a practice address in San Francisco, and 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in San Francisco → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Darlene Horton, M.D.San Francisco, CA 941071760680250
- Sohini Stone, MD, MBASan Francisco, CA 941071093981961
- Dong Lin, MD PHDSan Francisco, CA 941081922190719
- Kao-Hong Lin, M.D.San Francisco, CA 941081316026248
- Conny Lu, MDSan Francisco, CA 941081760002075
- Caroline Yong, MDSan Francisco, CA 941081255303277
- Joan Dorfman, M.D.San Francisco, CA 941051215935630
- Michael Dubroff, D.O.San Francisco, CA 941051598069874
Common questions
What is Allan Steven Marks, M.D.'s NPI number?
Allan Steven Marks, M.D.'s National Provider Identifier (NPI) is 1285762021, issued on Mar 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Allan Steven Marks, M.D. located?
The NPPES record lists a practice address at 650 5TH St Ste 405, San Francisco, CA, 94107. Phone: (415) 231-5333. Providers update this record themselves, so call before visiting.
How can I verify Allan Steven Marks, M.D.'s license?
NPPES lists California license number G45261, 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 Allan Steven Marks, M.D. prescribe under Medicare Part D?
In 2024, Allan Steven Marks, M.D. had 1,166 Medicare Part D claims for 148 beneficiaries; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.
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.