NPPES file of Aug 9, 2026

Marian Ellen Dahmer, P.A.

Physician Assistant · Oakland, CA

Marian Ellen Dahmer, P.A. is a physician assistant with a practice address in Oakland, California, and NPI 1164700258, issued on Jul 24, 2011. Check the license with the California board that licenses this profession; 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
1164700258
Name
Marian Ellen Dahmer
Credential
P.A.
Primary taxonomy
Physician Assistant 363A00000X
Practice location
365 Hawthorne Ave Ste 201, Oakland, CA 94609
Phone
(510) 452-1345
Enumerated
Jul 24, 2011
Record last updated
May 27, 2022
Medicare enrollment
Enrolled (PECOS I20140129001202); accepts Medicare assignment
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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Also registered at 365 Hawthorne Ave Ste 201

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

  1. Angela Chin, PA-CPhysician Assistant1891173027
  2. Cheryl Eldridge, PA-CPhysician Assistant1336246438
  3. Andrea Giovanelli, PAPhysician Assistant1376050823
  4. Leighann Giriunas, PHYSICIAN ASSISTANTPhysician Assistant1942764097
  5. Mitul Kadakia, MDInterventional Cardiology Physician1417157652
  6. James Lai, MDInterventional Cardiology Physician1407992001

Verify Marian Ellen Dahmer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
Find the California license search

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22% fewer Medicare Part D claims than the average physician assistant in 2024

650 Medicare Part D claims for 469 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Marian Dahmer650
  2. Specialty average830

Most prescribed

  1. Amiodarone Hcl64 claims
  2. Metoprolol Succinate63 claims
  3. Flecainide Acetate59 claims
  4. Furosemide39 claims
  5. Metoprolol Tartrate37 claims
  6. Sotalol31 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: $308.15

2 payments; by number, the most common kind was food and beverage; the largest payer was iRhythm Technologies, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marian Dahmer$308.15
  2. Specialty average$841.65

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

Bills Medicare through one group practice

  1. Permanente Medical Group IncWalnut Creek, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marian Ellen Dahmer among 14,451 physician assistant records in California

Marian Ellen Dahmer, P.A. is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 30% of them.

  • NPI issued2011 · 30% of these records are older, 67% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2011 · median 2018 among the 7,214 with a school on file
  • Record last updated2022 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Joel Ambrosio, PA-COakland, CA 946091154628105
  2. Miranda Bassilios, PA COakland, CA 946091609831114
  3. Erin Cava, PA-C, RDOakland, CA 946091225351620
  4. Cheryl Eldridge, PA-COakland, CA 946091336246438
  5. Ronald Grant, P.A.Oakland, CA 946091740245190
  6. Jane Hysen, PAOakland, CA 946091538133731
  7. Christa Kong, P.A.Oakland, CA 946091487813697
  8. Alexandra Mead, PA-COakland, CA 946091730286832

Common questions

What is Marian Ellen Dahmer, P.A.'s NPI number?

Marian Ellen Dahmer, P.A.'s National Provider Identifier (NPI) is 1164700258, issued on Jul 24, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Marian Ellen Dahmer, P.A. located?

The NPPES record lists a practice address at 365 Hawthorne Ave Ste 201, Oakland, CA, 94609. Phone: (510) 452-1345. Providers update this record themselves, so call before visiting.

How can I verify Marian Ellen Dahmer, P.A.'s license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Marian Ellen Dahmer, P.A. prescribe under Medicare Part D?

In 2024, Marian Ellen Dahmer, P.A. had 650 Medicare Part D claims for 469 beneficiaries; the average among physician assistant prescribers was 830. 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.

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.