TAMSIN BARKER MSN, NNP-BC
NPI 1538049721
Nurse Practitioner - Neonatal, Critical Care in San Francisco, CA

Q: What is Tamsin Barker's NPI number?

The NPI number for Tamsin Barker is 1538049721. It was assigned to this individual provider in the NPPES registry on September 8, 2025. The provider is also known as Tamsin Summers.

Q: What is Tamsin Barker's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Neonatal, Critical Care, with taxonomy code 363LN0005X.

Q: When was this NPI record last updated?

The NPPES record for Tamsin Barker was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 08, 2025PECOS Enrolled

1975 4TH ST, SAN FRANCISCO, CA 94143(415) 290-7760 Get Directions Write a Review

NPPES record last updated: September 9, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Tamsin Barker Msn, Nnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TAMSIN BARKER MSN, NNP-BC (NPI 1538049721) is an individual neonatal, critical care provider in San Francisco, California, licensed in California (95036643) and active in the NPI registry since September 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1538049721

Entity TypeIndividualFemale

Primary Taxonomy363LN0005X

Provider Legal NameTAMSIN BARKERCredential: MSN, NNP-BC

Location Address1975 4TH STSan Francisco, CA 94143-2351

Mailing Address155 Pine Hills LnOakland, CA 94611-1534 · (224) 578-1780

Phone(415) 290-7760

Sole ProprietorYes

Medical School CMSOtherGraduated 2024

Enumeration DateSeptember 8, 2025

Last NPPES UpdateSeptember 9, 2025

NPPES CertifiedSeptember 9, 2025

✔ NPI 1538049721 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Neonatal, Critical CarePhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LN0005X

License✔ Licensed in CA · 95036643

1975 4TH ST, San Francisco, CA 94143

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Other Names 1

Former Name (1)Tamsin Summers

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tamsin Barker Msn, Nnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID345738688

PECOS Enrollment IDI20251020002102

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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