Siamak Mehdizadehseraj, M.D.
Internal Medicine Physician · French Camp, CA
Siamak Mehdizadehseraj, M.D. is an internal medicine physician with a practice address in French Camp, California, and NPI 1720460942, issued on Jun 24, 2015. Check the license (California A152630, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Siamak Mehdizadehseraj
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A152630 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Hospital RD, French Camp, CA 95231
- Phone
- (209) 468-6000
- Enumerated
- Jun 24, 2015
- Record last updated
- Sep 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (209) 468-7042
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
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Verify Siamak Mehdizadehseraj in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A152630Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average internal medicine physician in 2024
5,663 Medicare Part D claims for 382 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 206 claims were for opioids.
Most prescribed
- Atorvastatin Calcium352 claims
- Amlodipine Besylate263 claims
- Eliquis256 claims
- Tamsulosin Hcl187 claims
- Losartan Potassium170 claims
- Furosemide165 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.
Siamak Mehdizadehseraj among 17,696 internal medicine physician records in California
Siamak Mehdizadehseraj, M.D. 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 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2018 · 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).
48 internal medicine physician records list a practice address in French Camp
They are 48 of the 793 NPPES records with a practice address in French Camp, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in French Camp → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maryrose Bautista, M.D.French Camp, CA 952311114945128
- Ranjita Choudhury, M.DFrench Camp, CA 952311336163617
- Victoria Formoso, M.D.French Camp, CA 952311679591861
- Kanwardeep Grewal, M.D.French Camp, CA 952311205854833
- Aman Grewal, M.D.French Camp, CA 952311992991392
- Syung Jung, M.D.French Camp, CA 952311407874746
- Sheela Kapre, M.D.French Camp, CA 952311245256544
- Norry Lan, M.D.French Camp, CA 952311033141759
Common questions
What is Siamak Mehdizadehseraj, M.D.'s NPI number?
Siamak Mehdizadehseraj, M.D.'s National Provider Identifier (NPI) is 1720460942, issued on Jun 24, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Siamak Mehdizadehseraj, M.D. located?
The NPPES record lists a practice address at 500 W Hospital RD, French Camp, CA, 95231. Phone: (209) 468-6000. Providers update this record themselves, so call before visiting.
How can I verify Siamak Mehdizadehseraj, M.D.'s license?
NPPES lists California license number A152630, 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 Siamak Mehdizadehseraj, M.D. prescribe under Medicare Part D?
In 2024, Siamak Mehdizadehseraj, M.D. had 5,663 Medicare Part D claims for 382 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.