1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Pediatrics
  6. NPI Profile

JAMES ROBERT BAYRER M.D.
NPI 1669601274
Pediatrics in San Francisco, CA

Active since July 06, 2009PECOS Enrolled
505 PARNASSUS BOX 0110, SAN FRANCISCO, CA 94143(415) 476-6245(415) 476-4009 Get Directions Write a Review

NPPES record last updated: July 6, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About James Robert Bayrer M.d. NPPES

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

JAMES ROBERT BAYRER M.D. (NPI 1669601274) is an individual pediatrics provider in San Francisco, California, licensed in California (A108316) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1669601274
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameJAMES ROBERT BAYRERCredential: M.D.
Location Address505 PARNASSUS BOX 0110San Francisco, CA 94143-0001
Mailing Address505 Parnassus Box 0110San Francisco, CA 94143-0001 · (415) 476-6245 · Fax (415) 476-4009
Phone(415) 476-6245
Fax(415) 476-4009
Sole ProprietorNo
Enumeration DateJuly 6, 2009
✔ NPI 1669601274 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A108316
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
505 PARNASSUS BOX 0110, San Francisco, CA 94143
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINRES000CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James Robert Bayrer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

3

Medicare enrollment records show James Bayrer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Pediatrics Associates
Same address
Pediatrics
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 1,159 clinicians in this Medicare group
NPI 1376614016 (415) 353-2000
University Of California San Francisco
Same address
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
Same address
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 4

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

DR. LESLIE ARIN LUSK M.D.
Pediatrics
505 PARNASSUS BOX 0110, UC SAN FRANCISCO, M691
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-6245
HEYMAN OO
Pediatrics
505 PARNASSUS BOX 0110
SAN FRANCISCO, CA 94143
San Francisco County (510) 449-1644
JESSICA M SCHUMER MD
Student in an Organized Health Care Education/Training Program
505 PARNASSUS BOX 0110
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-6245
CAROLINE ANDLER M.D.
Pediatrics
505 PARNASSUS BOX 0110
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-6245

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Bayrer's NPI number?

The NPI number for James Bayrer is 1669601274. It was assigned to this individual provider in the NPPES registry on July 6, 2009.

Where is James Bayrer located?

James Bayrer practices at 505 Parnassus Box 0110, San Francisco, CA 94143. The listed phone number is (415) 476-6245.

What is James Bayrer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is James Bayrer enrolled in Medicare?

Yes. James Bayrer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for James Bayrer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Bayrer reassigns Medicare benefits to 3 organizations: Ucsf Pediatrics Associates (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Bayrer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for James Bayrer was last updated on July 6, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years 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.