NPPES file of Aug 9, 2026

Armen Yeghia Nercessian, D.O.

General Practice Physician · West Covina, CA

Armen Yeghia Nercessian, D.O. is a general practice physician with a practice address in West Covina, California, and NPI 1679534374, issued on Mar 31, 2006. Check the license (California 20A6784, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1679534374
Name
Armen Yeghia Nercessian
Credential
D.O.
Primary taxonomy
General Practice Physician 208D00000X
License number
20A6784 CA
Self-reported in NPPES; status is on the state search
Practice location
2425 S Azusa Ave, West Covina, CA 91792
Phone
(626) 839-9111
Enumerated
Mar 31, 2006
Record last updated
Mar 15, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(626) 964-9191
Medicaid ID
00AX67840 CA
Medicare enrollment
Enrolled (PECOS I20120404000578); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Armen Yeghia Nercessian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A6784
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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7.5 times the Medicare Part D claims of the average general practice physician in 2024

22,770 Medicare Part D claims for 646 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 36 claims were for opioids.

  1. Armen Nercessian22,770
  2. Specialty average3,030

Most prescribed

  1. Amlodipine Besylate919 claims
  2. Atorvastatin Calcium671 claims
  3. Gabapentin670 claims
  4. Tamsulosin Hcl603 claims
  5. Metformin Hcl591 claims
  6. Omeprazole512 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): 7.7 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.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%25.7
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Armen Yeghia Nercessian among 1,956 general practice physician records in California

Armen Yeghia Nercessian, D.O. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 66% newer
  • In a Medicare fileYes · 48% of these records are
  • In the CMS Doctors and Clinicians fileYes · 27% of these records are
  • Graduated1995 · median 1994 among the 520 with a school on file
  • Record last updated2017 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Physician providers in California

There are 1,956 general practice physician records in California.

The 8 general practice physician records with the nearest ZIP codes

  1. Deborah Harper, M.D.West Covina, CA 917911306080643
  2. Sadhna Dhand, M.D.West Covina, CA 917901033394531
  3. Brigida Guevara-Rebueno, M.D.,West Covina, CA 917901750329298
  4. Angela Ni, MDWest Covina, CA 917901962467423
  5. Catherine Noel-Uyloan, MDWest Covina, CA 917901891891537
  6. Madhu Sharma, MDWest Covina, CA 917901669430161
  7. Wonsick ChoeWalnut, CA 917891689070690
  8. Custodio Galicia, MDWalnut, CA 917891578988655

Common questions

What is Armen Yeghia Nercessian, D.O.'s NPI number?

Armen Yeghia Nercessian, D.O.'s National Provider Identifier (NPI) is 1679534374, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Armen Yeghia Nercessian, D.O. located?

The NPPES record lists a practice address at 2425 S Azusa Ave, West Covina, CA, 91792. Phone: (626) 839-9111. Providers update this record themselves, so call before visiting.

How can I verify Armen Yeghia Nercessian, D.O.'s license?

NPPES lists California license number 20A6784, 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 Armen Yeghia Nercessian, D.O. prescribe under Medicare Part D?

In 2024, Armen Yeghia Nercessian, D.O. had 22,770 Medicare Part D claims for 646 beneficiaries; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.

What is Armen Yeghia Nercessian, D.O.'s MIPS final score?

The 2023 MIPS final score is 7.7 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.