Martin S. Liberman, MD
Internal Medicine Physician · San Francisco, CA
Martin S. Liberman, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1376530006, issued on Sep 27, 2005. Check the license (California G26857, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Martin S. Liberman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G26857 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1661 Pine Street, San Francisco, CA 94109
- Phone
- (415) 447-5571
- Enumerated
- Sep 27, 2005
- Record last updated
- Dec 21, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (415) 447-5575
- Medicaid ID
- 00G268570 CA
- Medicare enrollment
- Enrolled (PECOS I20091002000271); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 1967
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1661 Pine Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edward Sporbert, M.P.T.Physical Therapist1275860496
Verify Martin S. Liberman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G26857Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average internal medicine physician in 2024
568 Medicare Part D claims for 26 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium43 claims
- Pantoprazole Sodium34 claims
- Gabapentin29 claims
- Amlodipine Besylate28 claims
- Furosemide28 claims
- Duloxetine Hcl27 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.
Martin S. Liberman among 17,696 internal medicine physician records in California
Martin S. Liberman, MD is one of 17,696 internal medicine 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1967 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Gayatri Khanna, M.D.San Francisco, CA 941091639191455
- Deborah Lindes, M.D.San Francisco, CA 941091952323776
- Aravind Mani, MDSan Francisco, CA 941091932151941
- Neil Melnick, MDSan Francisco, CA 941091164488524
Common questions
What is Martin S. Liberman, MD's NPI number?
Martin S. Liberman, MD's National Provider Identifier (NPI) is 1376530006, issued on Sep 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Martin S. Liberman, MD located?
The NPPES record lists a practice address at 1661 Pine Street, San Francisco, CA, 94109. Phone: (415) 447-5571. Providers update this record themselves, so call before visiting.
How can I verify Martin S. Liberman, MD's license?
NPPES lists California license number G26857, 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 Martin S. Liberman, MD prescribe under Medicare Part D?
In 2024, Martin S. Liberman, MD had 568 Medicare Part D claims for 26 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.