Roya Nasseri, M.D.
NPI 1265695688 · Family Medicine Physician · Simi Valley, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roya Nasseri, M.D. is a Family Medicine Physician provider in Simi Valley, CA (NPI 1265695688).
Provider details
- NPI number
- 1265695688
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- C146434 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
886 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 294 | $97 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 169 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 112 | $65 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 63 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 51 | $84 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 240 | 80 |
| Levothyroxine Sodium | 137 | 34 |
| Amlodipine Besylate | 124 | 41 |
| Losartan Potassium | 85 | 30 |
| Metoprolol Succinate | 67 | 23 |
| Lisinopril | 67 | 22 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 across 1 record (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
Registry dates
- Enumerated
- 2008-07-07
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Roya Nasseri's NPI number?
- Roya Nasseri's National Provider Identifier (NPI) is 1265695688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roya Nasseri's specialty?
- Roya Nasseri is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Roya Nasseri located?
- Roya Nasseri's practice location on file with NPPES is 2655 1st St Ste 360, Simi Valley, CA 93065-1581.
- What is Roya Nasseri's phone number?
- The practice phone number listed in the NPPES registry for Roya Nasseri is (805) 583-7640.
- Does Roya Nasseri accept Medicare?
- Roya Nasseri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roya Nasseri's NPI active?
- Yes — Roya Nasseri's NPI (1265695688) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.