Rajashri Iyengar, M.D.
NPI 1811004476 · Allergy & Immunology Physician · San Carlos, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rajashri Iyengar, M.D. is a Allergy & Immunology Physician provider in San Carlos, CA (NPI 1811004476).
Provider details
- NPI number
- 1811004476
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 229490 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,133 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 1,219 | $5 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 930 | $20 |
| Professional Service for Multiple Injections of Allergen95117 | 753 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 153 | $153 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 46 | $215 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 156 | 72 |
| Olopatadine Hcl | 61 | 32 |
| Epinephrine | 55 | 47 |
| Montelukast Sodium | 43 | 14 |
| Levocetirizine Dihydrochloride | 34 | 15 |
| Famotidine | 26 | 13 |
| Ciclesonidebrand: Omnaris | 20 | — |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,557 across 58 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 795 El Camino RealPalo Alto, CA 94330-2302Phone: (650) 853-2981
Registry dates
- Enumerated
- 2006-08-23
- Last updated
- 2020-05-28
- Certified
- 2020-05-28
Frequently asked questions
- What is Rajashri Iyengar's NPI number?
- Rajashri Iyengar's National Provider Identifier (NPI) is 1811004476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rajashri Iyengar's specialty?
- Rajashri Iyengar is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Rajashri Iyengar located?
- Rajashri Iyengar's practice location on file with NPPES is 301 Industrial Rd, San Carlos, CA 94070-2603.
- What is Rajashri Iyengar's phone number?
- The practice phone number listed in the NPPES registry for Rajashri Iyengar is (650) 596-4150.
- Does Rajashri Iyengar accept Medicare?
- Rajashri Iyengar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rajashri Iyengar's NPI active?
- Yes — Rajashri Iyengar's NPI (1811004476) is active in the NPPES registry as of the last update on 2020-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.