NPPES file of Aug 9, 2026

Michelle Armacost, M.D.

Neurology Physician · Downey, CA

Michelle Armacost, M.D. is a neurology physician with a practice address in Downey, California, and NPI 1609136316, issued on May 29, 2012. Check the license (California A125818, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609136316
Name
Michelle Armacost
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
A125818 CA
Self-reported in NPPES; status is on the state search
Practice location
7601 Imperial Hwy, Downey, CA 90242
Phone
(562) 385-7555
Enumerated
May 29, 2012
Record last updated
May 19, 2020 (not updated in 6 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 7601 Imperial Hwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Carolina AbkarianClinical Social Worker1700102803
  2. Leila AbulashinOccupational Therapist1265854533
  3. Teeni Adal, RDNRegistered Dietitian1730642562
  4. Edilberto AdayaRegistered Nurse1619780079
  5. Leslie AedoSpeech-Language Pathologist1255865259
  6. Yesenia AguilarClinical Social Worker1558510263

Verify Michelle Armacost in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A125818    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

69% fewer Medicare Part D claims than the average neurology physician in 2024

421 Medicare Part D claims for 46 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Michelle Armacost421
  2. Specialty average1,370

Most prescribed

  1. Lacosamide55 claims
  2. Clobazam52 claims
  3. Levetiracetam43 claims
  4. Lamotrigine31 claims
  5. Zonisamide17 claims
  6. Phenobarbital15 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.

Industry payments in 2024: $149.84

6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michelle Armacost$149.84
  2. Specialty average$8,318.07

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

All 2,339 in California → Every provider in Downey →

Other neurology physician records in California

  1. Venkat Raghav Aachi, MDThousand Oaks, CA1740640051
  2. John Aalbers, M.D.San Diego, CA1942262431
  3. Kafia Abbasi, M.D.French Camp, CA1215114897
  4. Puya Abbassi, D.O.San Jose, CA1831695428
  5. Ahmed Abdelhak, MB CHBSan Francisco, CA1053013748
  6. Diana Abdulrahman, M.D.Pomona, CA1518276880
  7. Hadi Abou El Hassan, MDLos Angeles, CA1053995720
  8. John Paul Aboubechara, MD, PHDPalo Alto, CA1205461803
  9. Saheil AboutalibLong Beach, CA1548551112
  10. Justin Abraham, M.D., M.B.A.Santa Barbara, CA1225322522

Common questions

What is Michelle Armacost, M.D.'s NPI number?

Michelle Armacost, M.D.'s National Provider Identifier (NPI) is 1609136316, issued on May 29, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Michelle Armacost, M.D. located?

The NPPES record lists a practice address at 7601 Imperial Hwy, Downey, CA, 90242. Phone: (562) 385-7555. Providers update this record themselves, so call before visiting.

How can I verify Michelle Armacost, M.D.'s license?

NPPES lists California license number A125818, 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 Michelle Armacost, M.D. prescribe under Medicare Part D?

In 2024, Michelle Armacost, M.D. had 421 Medicare Part D claims for 46 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.