Maria E. Samsonov, M.D., M.P.H.
Nephrology Physician · San Francisco, CA
Maria E. Samsonov, M.D., M.P.H. is a nephrology physician with a practice address in San Francisco, California, and NPI 1598737025, issued on Feb 7, 2006. Check the license (California A91227, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maria E. Samsonov
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A91227 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1700 California St, San Francisco, CA 94109
- Phone
- (415) 386-8406
- Enumerated
- Feb 7, 2006
- Record last updated
- Jan 14, 2022
- Fax
- (415) 386-8406
- Medicaid ID
- 00A91227 CA
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 1700 California St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maria E. Samsonov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91227Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average nephrology physician in 2024
939 Medicare Part D claims for 180 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Atorvastatin Calcium58 claims
- Amlodipine Besylate48 claims
- Furosemide36 claims
- Gabapentin34 claims
- Lisinopril29 claims
- Tamsulosin Hcl29 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.
Maria E. Samsonov among 1,468 nephrology physician records in California
Maria E. Samsonov, M.D., M.P.H. is one of 1,468 nephrology physician records with a practice address in California. 88% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2022 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in San Francisco → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Hanlon Fong, MDSan Francisco, CA 941091184607970
- Shiang-Cheng Kung, MDSan Francisco, CA 941091427017185
- J. David Malone, MDSan Francisco, CA 941091952404253
- Parul Patel, MDSan Francisco, CA 941091528262870
- Chi ChuSan Francisco, CA 941101346651270
- Ilyas Iliya, MDSan Francisco, CA 941101336214634
- Pascale Khairallah, MDSan Francisco, CA 941101891100822
- Peter Linde, M.D.San Francisco, CA 941101134238637
Common questions
What is Maria E. Samsonov, M.D., M.P.H.'s NPI number?
Maria E. Samsonov, M.D., M.P.H.'s National Provider Identifier (NPI) is 1598737025, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maria E. Samsonov, M.D., M.P.H. located?
The NPPES record lists a practice address at 1700 California St, San Francisco, CA, 94109. Phone: (415) 386-8406. Providers update this record themselves, so call before visiting.
How can I verify Maria E. Samsonov, M.D., M.P.H.'s license?
NPPES lists California license number A91227, 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 Maria E. Samsonov, M.D., M.P.H. prescribe under Medicare Part D?
In 2024, Maria E. Samsonov, M.D., M.P.H. had 939 Medicare Part D claims for 180 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.