Gevork Joe Maissian, D.O.
Internal Medicine Physician · Glendale, CA
Gevork Joe Maissian, D.O. is an internal medicine physician with a practice address in Glendale, California, and NPI 1639320658, issued on Oct 8, 2008. Check the license (California 20A10524, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gevork Joe Maissian
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A10524 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1737 W Glenoaks Blvd, Glendale, CA 91201
- Phone
- (818) 243-1186
- Enumerated
- Oct 8, 2008
- Record last updated
- Oct 3, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (818) 243-3868
- Medicare enrollment
- Enrolled (PECOS I20090108000495); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1737 W Glenoaks Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diana BoghozianNurse Practitioner1316545239
- Vahagn Nacharyan, N.P.Family Nurse Practitioner1689112617
- Armine Ter-Barseghyan, PA-CPhysician Assistant1447038518
Verify Gevork Joe Maissian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10524Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14.8 times the Medicare Part D claims of the average internal medicine physician in 2024
47,024 Medicare Part D claims for 823 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 412 claims were for opioids.
Most prescribed
- Atorvastatin Calcium2,081 claims
- Amlodipine Besylate1,692 claims
- Vascepa1,557 claims
- Rosuvastatin Calcium1,447 claims
- Metformin Hcl1,387 claims
- Diclofenac Sodium1,345 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 35.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $3,110.14
134 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gevork Joe Maissian among 17,696 internal medicine physician records in California
Gevork Joe Maissian, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
92 internal medicine physician records list a practice address in Glendale
They are 92 of the 4,742 NPPES records with a practice address in Glendale, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Glendale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mikhail Blinchik, M.D.Glendale, CA 912011225255201
- Laila Hanna, M.D.Glendale, CA 912011942348255
- Issam Khafaja, M.D.Glendale, CA 912011528062874
- Mehdi RazeghiGlendale, CA 912011063454510
- Robert Allen, M.D.Glendale, CA 912021104212422
- James Anenih, PAGlendale, CA 912021093817918
- Paul Duron, M.D.Glendale, CA 912021811945082
- Armen Kazanchian, M.D.Glendale, CA 912021235359845
Common questions
What is Gevork Joe Maissian, D.O.'s NPI number?
Gevork Joe Maissian, D.O.'s National Provider Identifier (NPI) is 1639320658, issued on Oct 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Gevork Joe Maissian, D.O. located?
The NPPES record lists a practice address at 1737 W Glenoaks Blvd, Glendale, CA, 91201. Phone: (818) 243-1186. Providers update this record themselves, so call before visiting.
How can I verify Gevork Joe Maissian, D.O.'s license?
NPPES lists California license number 20A10524, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gevork Joe Maissian, D.O. prescribe under Medicare Part D?
In 2024, Gevork Joe Maissian, D.O. had 47,024 Medicare Part D claims for 823 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Gevork Joe Maissian, D.O.'s MIPS final score?
The 2023 MIPS final score is 35.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.