Greg Kojayan, MD
NPI 1689200594 · Anesthesiology Physician · West Hollywood, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Greg Kojayan, MD is a Anesthesiology Physician provider in West Hollywood, CA (NPI 1689200594).
Provider details
- NPI number
- 1689200594
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A190679 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
12 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 12 | $146 |
Typical Medicare-allowed amounts for these services range $146–$146 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 757 Westwood PlzLos Angeles, CA 90095-8358Phone: (310) 825-9111
Registry dates
- Enumerated
- 2020-03-23
- Last updated
- 2025-08-18
- Certified
- 2025-08-18
Frequently asked questions
- What is Greg Kojayan's NPI number?
- Greg Kojayan's National Provider Identifier (NPI) is 1689200594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greg Kojayan's specialty?
- Greg Kojayan is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Greg Kojayan located?
- Greg Kojayan's practice location on file with NPPES is 8700 Beverly Blvd, West Hollywood, CA 90048-1804.
- What is Greg Kojayan's phone number?
- The practice phone number listed in the NPPES registry for Greg Kojayan is (310) 423-5841.
- Does Greg Kojayan accept Medicare?
- Greg Kojayan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Greg Kojayan's NPI active?
- Yes — Greg Kojayan's NPI (1689200594) is active in the NPPES registry as of the last update on 2025-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.