Registry data as of Aug 27, 2026

Tamsin Barker, MSN, NNP-BC

Critical Care Neonatal Nurse Practitioner · San Francisco, CA

Tamsin Barker, MSN, NNP-BC is a critical care neonatal nurse practitioner with a practice address in San Francisco, California, and NPI 1538049721, issued on Sep 8, 2025. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1538049721
Name
Tamsin Barker
Credential
MSN, NNP-BC
Primary taxonomy
Critical Care Neonatal Nurse Practitioner 363LN0005X
Practice location
1975 4TH St, San Francisco, CA 94143
Phone
(415) 290-7760
Enumerated
Sep 8, 2025
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 1975 4TH St

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

  1. Robyn Adcock, LACAcupuncturist1578039129
  2. Murtaza Ali, DOPediatrics Physician1205456258
  3. Faisal Alosamey, MDStudent in an Organized Health Care Education/Training Program1851124135
  4. Erica AnunwahStudent in an Organized Health Care Education/Training Program1386220721
  5. Naba AsifPediatrics Physician1669115069
  6. Mojan Azarmi, MDPediatrics Physician1164836086

Verify Tamsin Barker 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

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

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

Critical Care Neonatal Nurse Practitioner providers in California

There are 96 critical care neonatal nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other critical care neonatal nurse practitioner records in California

  1. Ancy Abraham, MSN, NNP-BCLos Angeles, CA1598094286
  2. Dann Omar Banaag, DNP, NNP-CLoma Linda, CA1639842198
  3. Christian Bassi, APRN, NNP-BCClovis, CA1306355441
  4. Marlene Beranek, RNC, MN, NNP-BCTorrance, CA1902092380
  5. Kristine Boyle, NPPalo Alto, CA1649368861
  6. Ashley Bush, NNPSan Diego, CA1275215048
  7. Deborah Camara, RNC NNP CPNPBurbank, CA1699861468
  8. Lauren CavigliaSacramento, CA1710703368
  9. Katherine Chamberlain, NNPMadera, CA1700338993
  10. Jennie Chu, MSN NNP-BCTorrance, CA1508126251

Common questions

What is Tamsin Barker, MSN, NNP-BC's NPI number?

Tamsin Barker, MSN, NNP-BC's National Provider Identifier (NPI) is 1538049721, issued on Sep 8, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Tamsin Barker, MSN, NNP-BC located?

The NPPES record lists a practice address at 1975 4TH St, San Francisco, CA, 94143. Phone: (415) 290-7760. Providers update this record themselves, so call before visiting.

How can I verify Tamsin Barker, MSN, NNP-BC's license?

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

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.