Tamsin Barker, MSN, NNP-BC
NPI 1538049721 · Critical Care Neonatal Nurse Practitioner · San Francisco, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tamsin Barker, MSN, NNP-BC is a Critical Care Neonatal Nurse Practitioner provider in San Francisco, CA (NPI 1538049721).
Provider details
- NPI number
- 1538049721
- Entity type
- Individual
- Primary specialty
- Critical Care Neonatal Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, NNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95036643 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-09-08
- Last updated
- 2025-09-09
- Certified
- 2025-09-09
Frequently asked questions
- What is Tamsin Barker's NPI number?
- Tamsin Barker's National Provider Identifier (NPI) is 1538049721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tamsin Barker's specialty?
- Tamsin Barker is listed in the NPPES registry with a primary specialty of Critical Care Neonatal Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tamsin Barker located?
- Tamsin Barker's practice location on file with NPPES is 1975 4th St, San Francisco, CA 94143-2351.
- What is Tamsin Barker's phone number?
- The practice phone number listed in the NPPES registry for Tamsin Barker is (415) 290-7760.
- Does Tamsin Barker accept Medicare?
- Tamsin Barker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tamsin Barker's NPI active?
- Yes — Tamsin Barker's NPI (1538049721) is active in the NPPES registry as of the last update on 2025-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.