NPPES file of Aug 9, 2026

Marc B. Yellin, M.D.

Emergency Medicine Physician · Santa Cruz, CA

Marc B. Yellin, M.D. is an emergency medicine physician with a practice address in Santa Cruz, California, and NPI 1952446973, issued on Feb 20, 2007. Check the license (California G53415, 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
1952446973
Name
Marc B. Yellin
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
G53415 CA
Self-reported in NPPES; status is on the state search
Practice location
1555 Soquel Dr, Santa Cruz, CA 95065
Phone
(831) 462-7710
Enumerated
Feb 20, 2007
Record last updated
Mar 22, 2013 (not updated in 13 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.
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Also registered at 1555 Soquel Dr

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

  1. Paul Angelo, RNFamily Nurse Practitioner1750268793
  2. Francisco Arrieta, MDFamily Medicine Physician1861232498
  3. Vivian Banh, DOAnesthesiology Physician1992332662
  4. James Bergum, CCPPerfusionist1073148235
  5. Upasna Bhuria, MDAnesthesiology Physician1700020575
  6. Daniel BishopStudent in an Organized Health Care Education/Training Program1407507304

Verify Marc B. Yellin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G53415
    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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87% fewer Medicare Part D claims than the average emergency medicine physician in 2024

30 Medicare Part D claims for 12 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. Marc Yellin30
  2. Specialty average226

Most prescribed

  1. Omeprazole13 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 practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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 score76.7
  2. Costout of 100 · 30%97.1
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Marc B. Yellin among 7,751 emergency medicine physician records in California

Marc B. Yellin, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.

  • NPI issued2007 · 40% of these records are older, 50% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2013 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Alan Buchwald, M.D.Santa Cruz, CA 950651174667075
  2. John Christensen, M.D.Santa Cruz, CA 950651679609507
  3. David Danish, D.O.Santa Cruz, CA 950651861466948
  4. Sarah Feldmann, D.O.Santa Cruz, CA 950651629271143
  5. John Fust, M.D.Santa Cruz, CA 950651891821633
  6. John Grady, D.O.Santa Cruz, CA 950651023270063
  7. William Hencke, MDSanta Cruz, CA 950651194868166
  8. Terry Lapid, M.D.Santa Cruz, CA 950651396887287

Common questions

What is Marc B. Yellin, M.D.'s NPI number?

Marc B. Yellin, M.D.'s National Provider Identifier (NPI) is 1952446973, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Marc B. Yellin, M.D. located?

The NPPES record lists a practice address at 1555 Soquel Dr, Santa Cruz, CA, 95065. Phone: (831) 462-7710. Providers update this record themselves, so call before visiting.

How can I verify Marc B. Yellin, M.D.'s license?

NPPES lists California license number G53415, 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 Marc B. Yellin, M.D. prescribe under Medicare Part D?

In 2024, Marc B. Yellin, M.D. had 30 Medicare Part D claims for 12 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is Marc B. Yellin, M.D.'s MIPS final score?

The 2023 MIPS final score is 94.6 of 100, reported for the practice group. 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.