Medicare Enrolled

Dr. Liza Garabet Diramerian, MD

Hospitalist Physician · Mission Hills, CA
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
Low-engagement
11333 SEPULVEDA BLVD, Mission Hills, CA 91345
8776343196
In practice since 2017 (8 years)
NPI: 1275054728 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Garabet Diramerian from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Garabet Diramerian

Dr. Liza Garabet Diramerian is a hospitalist physician in Mission Hills, CA, with 8 years of NPI registration. Based on federal Medicare data, Dr. Garabet Diramerian performed 572 Medicare services across 302 unique beneficiaries.

Between the years covered by Open Payments, Dr. Garabet Diramerian received a total of $207 from 2 pharmaceutical and/or device companies across 11 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hospitalist physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Garabet Diramerian is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 8 years in practice ▲ Top 41% volume in CA $207 industry payments

Medicare Practice Summary

Medicare Utilization ↗
572
Medicare services
Top 41% in CA for hospitalist physician
302
Unique beneficiaries
$154
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~72 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Critical care, first 30-74 min
Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient.
 413 $167 $444
Initial hospital admission, high complexity
Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter.
 76 $141 $494
Hospital follow-up visit, high complexity
Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter.
 62 $95 $263
Initial hospital admission, moderate complexity
Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter.
 21 $103 $367
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.

Industry Payment Transparency

Open Payments through 2023 ↗
$207
Total received (2021-2023)
Avg $69/year across 3 years
Top 44% in CA for hospitalist physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
2
Companies
11
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$207 (100.0%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2023
$44
2022
$125
2021
$38

Payments by company (2023)

Consulting
Speaking
Meals & Travel
Research
Novartis Pharmaceuticals Corporation
$23
E.R. Squibb & Sons, L.L.C.
$21
Top 3 companies account for 100.0% of 2023 payments
All-time payments by company (2021-2023) ›
E.R. Squibb & Sons, L.L.C.
$184
Novartis Pharmaceuticals Corporation
$23
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
CAMZYOS · ELIQUIS · ENTRESTO
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →

Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Looking for a hospitalist physician in Mission Hills?
Compare hospitalist physicians in the Mission Hills area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Hospitalist physicians within 10 mi
285
Per 100K population
2.9
County median income
$87,760
Nearest hospital
KAISER FOUNDATION HOSPITAL - PANORAMA CITY
3.1 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments ✓ Open Payments CY 2023
Disciplinary History — Not public N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Garabet Diramerian is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Garabet Diramerian experienced with critical care, first 30-74 min?
Based on Medicare claims data, Dr. Garabet Diramerian performed 413 critical care, first 30-74 min services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Garabet Diramerian receive payments from pharmaceutical companies?
Yes. Dr. Garabet Diramerian received a total of $207 from 2 companies across 11 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Garabet Diramerian's costs compare to other hospitalist physicians in Mission Hills?
Dr. Garabet Diramerian's average Medicare payment per service is $154. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Garabet Diramerian) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →