Melissa Nasiruddin
Internal Medicine Physician · San Mateo, CA
Melissa Nasiruddin is an internal medicine physician with a practice address in San Mateo, California, and NPI 1619469392, issued on May 30, 2018. Check the license (California 20A19867, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Melissa Nasiruddin
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A19867 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Franklin Pkwy, San Mateo, CA 94403
- Phone
- (408) 828-9673
- Enumerated
- May 30, 2018
- Record last updated
- Sep 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20240603001966); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1000 Franklin Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yachun ChangPediatric Registered Nurse1508234659
- Katherine Rose De Jong, M.D.Pediatrics Physician1013180579
- Jonathan HuangPediatrics Physician1194286179
- Clara KoPharmacist1508399882
- Babak MehraeenPharmacist1235662289
- Seethim Naicker, MDFamily Medicine Physician1003443052
Verify Melissa Nasiruddin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A19867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,362 Medicare Part D claims for 475 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 79 claims were for opioids.
Most prescribed
- Atorvastatin Calcium226 claims
- Lisinopril134 claims
- Amlodipine Besylate125 claims
- Losartan Potassium119 claims
- Hydrochlorothiazide88 claims
- Levothyroxine Sodium74 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melissa Nasiruddin among 17,696 internal medicine physician records in California
Melissa Nasiruddin 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 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2018 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 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).
44 internal medicine physician records list a practice address in San Mateo
They are 44 of the 3,909 NPPES records with a practice address in San Mateo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Mateo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard EhlingSan Mateo, CA 944031124187950
- Susan Ehrlich, MDSan Mateo, CA 944031942379474
- Indu Fotedar, MDSan Mateo, CA 944031508960766
- Evelyn Haddad, M.D.San Mateo, CA 944031295936755
- Grace Hassid, MDSan Mateo, CA 944031700957099
- Susan Joseph, MDSan Mateo, CA 944031801960497
- Chester Kunnappilly, MDSan Mateo, CA 944031437220704
- Jennifer Lin, MDSan Mateo, CA 944031336342708
Common questions
What is Melissa Nasiruddin's NPI number?
Melissa Nasiruddin's National Provider Identifier (NPI) is 1619469392, issued on May 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Melissa Nasiruddin located?
The NPPES record lists a practice address at 1000 Franklin Pkwy, San Mateo, CA, 94403. Phone: (408) 828-9673. Providers update this record themselves, so call before visiting.
How can I verify Melissa Nasiruddin's license?
NPPES lists California license number 20A19867, 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 Melissa Nasiruddin prescribe under Medicare Part D?
In 2024, Melissa Nasiruddin had 2,362 Medicare Part D claims for 475 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.