Garen Derhartunian, M.D.
NPI 1609133776 · Internal Medicine Physician · Glendale, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garen Derhartunian, M.D. is a Internal Medicine Physician provider in Glendale, CA (NPI 1609133776).
Provider details
- NPI number
- 1609133776
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A134914 (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
14 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
6,488 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 | 914 | $140 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 709 | $43 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 666 | $79 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 650 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 630 | $118 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 233 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 663 | 150 |
| Amlodipine Besylate | 519 | 104 |
| Rosuvastatin Calcium | 488 | 93 |
| Metoprolol Succinate | 467 | 91 |
| Pantoprazole Sodium | 460 | 122 |
| Metformin Hcl | 417 | 69 |
| Tamsulosin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$375 across 7 records (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
- 2012-04-13
- Last updated
- 2024-01-22
- Certified
- 2024-01-22
Frequently asked questions
- What is Garen Derhartunian's NPI number?
- Garen Derhartunian's National Provider Identifier (NPI) is 1609133776, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garen Derhartunian's specialty?
- Garen Derhartunian is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Garen Derhartunian located?
- Garen Derhartunian's practice location on file with NPPES is 214 N Central Ave, Glendale, CA 91203-3556.
- What is Garen Derhartunian's phone number?
- The practice phone number listed in the NPPES registry for Garen Derhartunian is (818) 246-8000.
- Does Garen Derhartunian accept Medicare?
- Garen Derhartunian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garen Derhartunian's NPI active?
- Yes — Garen Derhartunian's NPI (1609133776) is active in the NPPES registry as of the last update on 2024-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.