NPPES file of Aug 9, 2026

Matthew R. Lewin, MD, PHD

Emergency Medicine Physician · San Francisco, CA

Matthew R. Lewin, MD, PHD is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1043269277, issued on May 6, 2006. Check the license (California A73541, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043269277
Name
Matthew R. Lewin
Credential
MD, PHD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A73541 CA
Self-reported in NPPES; status is on the state search
Practice location
505 Parnassus Ave, San Francisco, CA 94143
Phone
(415) 353-1238
Enumerated
May 6, 2006
Record last updated
Oct 1, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(415) 353-1799
Medicaid ID
00A735410 CA
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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8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →

Also registered at 505 Parnassus Ave

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

  1. Alexander Aabedi, MDStudent in an Organized Health Care Education/Training Program1245971480
  2. Kathryn Aaronson, RN, CPNPPediatric Nurse Practitioner1992030951
  3. Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
  4. Abul Abbas, MBBSAnatomic Pathology Physician1881652964
  5. Jesse Abelson, MDInternal Medicine Physician1083843817
  6. Rhonald AbitonaAcute Care Nurse Practitioner1164993473

Verify Matthew R. Lewin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A73541    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.

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Matthew R. Lewin among 7,751 emergency medicine physician records in California

Matthew R. Lewin, MD, PHD 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 not. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 60% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2009 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,751 in California → Every provider in San Francisco → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Michael Burg, MDSan Francisco, CA 941431497713150
  2. Laura Catena, MDSan Francisco, CA 941431225089568
  3. Christopher Fee, MDSan Francisco, CA 941431992762207
  4. Susan Lambe, MDSan Francisco, CA 941431588628598
  5. Daniel McDermott, MDSan Francisco, CA 941431316996556
  6. Jay Menaker, M.D.San Francisco, CA 941431568437176
  7. Lance Montauk, MDSan Francisco, CA 941431902862840
  8. Charles Murphy, MDSan Francisco, CA 941431417906447

Common questions

What is Matthew R. Lewin, MD, PHD's NPI number?

Matthew R. Lewin, MD, PHD's National Provider Identifier (NPI) is 1043269277, issued on May 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Matthew R. Lewin, MD, PHD located?

The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-1238. Providers update this record themselves, so call before visiting.

How can I verify Matthew R. Lewin, MD, PHD's license?

NPPES lists California license number A73541, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.