Liza Garabet Diramerian, MD
NPI 1275054728 · Hospitalist Physician · Mission Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Liza Garabet Diramerian, MD is a Hospitalist Physician provider in Mission Hills, CA (NPI 1275054728).
Provider details
- NPI number
- 1275054728
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A165982 (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
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
264 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 264 | $179 |
Typical Medicare-allowed amounts for these services range $179–$179 (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
Registry dates
- Enumerated
- 2017-07-05
- Last updated
- 2023-07-13
- Certified
- 2023-07-13
Frequently asked questions
- What is Liza Garabet Diramerian's NPI number?
- Liza Garabet Diramerian's National Provider Identifier (NPI) is 1275054728, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Liza Garabet Diramerian's specialty?
- Liza Garabet Diramerian is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Liza Garabet Diramerian located?
- Liza Garabet Diramerian's practice location on file with NPPES is 11333 Sepulveda Blvd, Mission Hills, CA 91345-1116.
- What is Liza Garabet Diramerian's phone number?
- The practice phone number listed in the NPPES registry for Liza Garabet Diramerian is (877) 634-3196.
- Does Liza Garabet Diramerian accept Medicare?
- Liza Garabet Diramerian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Liza Garabet Diramerian's NPI active?
- Yes — Liza Garabet Diramerian's NPI (1275054728) is active in the NPPES registry as of the last update on 2023-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.