Nisha S. Patel, MD
Allergy & Immunology (Internal Medicine) Physician · San Mateo, CA
Nisha S. Patel, MD is an allergy & immunology (internal medicine) physician with a practice address in San Mateo, California, and NPI 1336392547, issued on Oct 31, 2008. Check the license (California C181721, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nisha S. Patel
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License numbers
- C181721 CA
ME119949 FL
Self-reported in NPPES; status is on the state search - Practice location
- 136 N San Mateo Dr FL 2, San Mateo, CA 94401
- Phone
- (650) 348-1242
- Enumerated
- Oct 31, 2008
- Record last updated
- Feb 3, 2026
- Fax
- (650) 348-0788
- Medicare enrollment
- Enrolled (PECOS I20260129000578); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 81 in California → Look up another NPI →
Also registered at 136 N San Mateo Dr FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Cinquegrano, FNP-CFamily Nurse Practitioner1548711633
- Alvin LiDermatology Physician1225531007
- Peter Webb, M.D.Dermatology Physician1023030582
- Susan Wolf, M.D.Dermatology Physician1043206261
Verify Nisha S. Patel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C181721Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024
45 Medicare Part D claims for 27 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of 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.
Industry payments in 2024: $62.65
3 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 321 providers of this specialty with any payment received $7,456.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Csi Medical GroupSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nisha S. Patel among 81 allergy & immunology (internal medicine) physician records in California
Nisha S. Patel, MD is one of 81 allergy & immunology (internal medicine) physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 41% of them.
- NPI issued2008 · 41% of these records are older, 49% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2007 · median 2010 among the 46 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in California
There are 81 allergy & immunology (internal medicine) physician records in California.
All 81 in California → Every provider in San Mateo → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Andrew Engler, MDSan Mateo, CA 944011366400384
- Zahida Maskatia, M.D.San Mateo, CA 944011134364250
- Anna Arroyo, MDStanford, CA 943051205102472
- Meng Chen, MDStanford, CA 943051497190714
- Linda Zhu, MDStanford, CA 943051063839264
- Rebecca Chinthrajah, M.D.Palo Alto, CA 943041225235120
- Yu Wong, MDPalo Alto, CA 943041043486863
- Imran Junaid, M.D.Concord, CA 945201285801787
Common questions
What is Nisha S. Patel, MD's NPI number?
Nisha S. Patel, MD's National Provider Identifier (NPI) is 1336392547, issued on Oct 31, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Nisha S. Patel, MD located?
The NPPES record lists a practice address at 136 N San Mateo Dr FL 2, San Mateo, CA, 94401. Phone: (650) 348-1242. Providers update this record themselves, so call before visiting.
How can I verify Nisha S. Patel, MD's license?
NPPES lists California license number C181721, 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 Nisha S. Patel, MD prescribe under Medicare Part D?
In 2024, Nisha S. Patel, MD had 45 Medicare Part D claims for 27 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. 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.