Natalya Grigoryan, MD
NPI 1811485394 · Emergency Medicine Physician · West Hills, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Natalya Grigoryan, MD is a Emergency Medicine Physician provider in West Hills, CA (NPI 1811485394).
Provider details
- NPI number
- 1811485394
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- MD-54985 (IA)
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 tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
11,591 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Physician Or Allowed Practitioner Supervision of a Patient Receiving Medicare-Covered Services Provided By a Participating Home Health Agency (patient Not Present) Requiring Complex and Multidisciplinary Care Modalities Involving Regular Physician Or AllowG0181 | 5,759 | $112 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 1,283 | $59 |
| Physician Or Allowed Practitioner Re-Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians aG0179 | 1,194 | $46 |
| Education and Training to Self Measure Blood Pressure99473 | 891 | $17 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 28 | 27 |
| Prednisone | 21 | 20 |
| Ondansetronbrand: Ondansetron Odt | 19 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 18 | 18 |
| Azithromycin | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-30
- Last updated
- 2025-07-02
- Certified
- 2025-07-02
Frequently asked questions
- What is Natalya Grigoryan's NPI number?
- Natalya Grigoryan's National Provider Identifier (NPI) is 1811485394, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Natalya Grigoryan's specialty?
- Natalya Grigoryan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Natalya Grigoryan located?
- Natalya Grigoryan's practice location on file with NPPES is 7300 Medical Center Dr, West Hills, CA 91307-1902.
- What is Natalya Grigoryan's phone number?
- The practice phone number listed in the NPPES registry for Natalya Grigoryan is (818) 676-4000.
- Does Natalya Grigoryan accept Medicare?
- Natalya Grigoryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Natalya Grigoryan's NPI active?
- Yes — Natalya Grigoryan's NPI (1811485394) is active in the NPPES registry as of the last update on 2025-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.