NPPES file of Aug 9, 2026

Marin Muller, MD

Specialist · Santa Cruz, CA

Marin Muller, MD is a specialist with a practice address in Santa Cruz, California, and NPI 1619970118, issued on May 27, 2005. Check the license (California A53373, as entered in NPPES) 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
1619970118
Name
Marin Muller
Credential
MD
Primary taxonomy
Specialist 174400000X
License number
A53373 CA
Self-reported in NPPES; status is on the state search
Practice location
2025 Soquel Ave, Santa Cruz, CA 95062
Phone
(831) 458-5597
Enumerated
May 27, 2005
Record last updated
Dec 2, 2011 (not updated in 15 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20040506001770); 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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Also registered at 2025 Soquel Ave

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

  1. Farzana AbedFamily Nurse Practitioner1669932588
  2. Rachel Abrams, M.D.Family Medicine Physician1578542171
  3. Erin Agenjo Hohengarten, LCSWClinical Social Worker1376978791
  4. Bahar Aghighi, MDEndocrinology, Diabetes & Metabolism Physician1770562134
  5. Walter Alexander, M.D.Surgery Physician1386946606
  6. Timothy W Allari, MDInternal Medicine Physician1013996370

Verify Marin Muller in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A53373
    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
Find 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.

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5.4 times the Medicare Part D claims of the average specialist in 2024

7,494 Medicare Part D claims for 569 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 367 claims were for opioids.

  1. Marin Muller7,494
  2. Specialty average1,380

Most prescribed

  1. Atorvastatin Calcium629 claims
  2. Lisinopril275 claims
  3. Rosuvastatin Calcium264 claims
  4. Levothyroxine Sodium234 claims
  5. Amlodipine Besylate233 claims
  6. Gabapentin229 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.

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSanta Cruz, CA

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

Marin Muller among 5,749 specialist records in California

Marin Muller, MD is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 93% newer
  • In a Medicare fileYes · 30% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated1987 · median 1989 among the 1,075 with a school on file
  • Record last updated2011 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in California

There are 5,749 specialist records in California.

The 8 specialist records with the nearest ZIP codes

  1. Lisa Lewis, OTSanta Cruz, CA 950621083736565
  2. Consuelo ChavarriaSanta Cruz, CA 950601861840936
  3. Carolyn Israel, M.C.A.T., D.T.R.Santa Cruz, CA 950601750561668
  4. Sarah Potoczny, MPTSanta Cruz, CA 950601508930348
  5. Sigrid Rodoni, R.P.T.Santa Cruz, CA 950601477533354
  6. William Rosse, PSYCH ASSIST. INTERNSanta Cruz, CA 950601497952196
  7. Naomi Silber, MDSanta Cruz, CA 950641134133176
  8. Rami Dakkuri, MDSanta Cruz, CA 950651558318758

Common questions

What is Marin Muller, MD's NPI number?

Marin Muller, MD's National Provider Identifier (NPI) is 1619970118, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Marin Muller, MD located?

The NPPES record lists a practice address at 2025 Soquel Ave, Santa Cruz, CA, 95062. Phone: (831) 458-5597. Providers update this record themselves, so call before visiting.

How can I verify Marin Muller, MD's license?

NPPES lists California license number A53373, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Marin Muller, MD prescribe under Medicare Part D?

In 2024, Marin Muller, MD had 7,494 Medicare Part D claims for 569 beneficiaries; the average among specialist prescribers was 1,380. 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.