Rajashri S. Iyengar, M.D.
Allergy & Immunology Physician · San Carlos, CA
Rajashri S. Iyengar, M.D. is an allergy & immunology physician with a practice address in San Carlos, California, and NPI 1811004476, issued on Aug 23, 2006. Check the license (California 84762, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rajashri S. Iyengar
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 84762 CA
229490 MA
Self-reported in NPPES; status is on the state search - Practice location
- 301 Industrial RD, San Carlos, CA 94070
- Phone
- (650) 596-4150
- Enumerated
- Aug 23, 2006
- Record last updated
- May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20141028002807); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 301 Industrial RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Katrina Abad, AGPCNP-BCNurse Practitioner1306394952
- Maryam Adeel, M.D.Family Medicine Physician1285163998
- Jennifer Akazawa, MDFamily Medicine Physician1457971772
- Sarah Alamillo, PA-CPhysician Assistant1306349352
- Judith Alderman, N.P.Nurse Practitioner1407225121
- Omar Aljundi, NPNurse Practitioner1811464811
Verify Rajashri S. Iyengar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 84762Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
615 Medicare Part D claims for 130 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Azelastine Hcl156 claims
- Olopatadine Hcl61 claims
- Epinephrine55 claims
- Montelukast Sodium43 claims
- Levocetirizine Dihydrochloride34 claims
- Famotidine26 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: $1,557.38
58 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 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
- Sutter Bay Medical FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rajashri S. Iyengar among 444 allergy & immunology physician records in California
Rajashri S. Iyengar, M.D. is one of 444 allergy & immunology 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2002 · median 2004 among the 281 with a school on file
- Record last updated2020 · 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 207K00000X 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 Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in San Carlos → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Suzanne Henderson, MDRedwood City, CA 940631922452341
- Thomas Josa, MDRedwood City, CA 940631699853242
- Anita Kallepalli, M.D.Redwood City, CA 940611811335607
- Shilpa Desai, M.D.South San Francisco, CA 940801235369968
- Robert Lo, M.D.South San Francisco, CA 940801710928999
- Maria Serwonska, MDSouth San Francisco, CA 940801376621995
- Daniel Cerrone, M.D.Sunnyvale, CA 940851285079426
- Renu Gandhe, MDSunnyvale, CA 940851609138874
Common questions
What is Rajashri S. Iyengar, M.D.'s NPI number?
Rajashri S. Iyengar, M.D.'s National Provider Identifier (NPI) is 1811004476, issued on Aug 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rajashri S. Iyengar, M.D. located?
The NPPES record lists a practice address at 301 Industrial RD, San Carlos, CA, 94070. Phone: (650) 596-4150. Providers update this record themselves, so call before visiting.
How can I verify Rajashri S. Iyengar, M.D.'s license?
NPPES lists California license number 84762, 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 Rajashri S. Iyengar, M.D. prescribe under Medicare Part D?
In 2024, Rajashri S. Iyengar, M.D. had 615 Medicare Part D claims for 130 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.