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JAMES DANIEL BYRNE MD
NPI 1831134097
Obstetrics & Gynecology - Maternal & Fetal Medicine in San Jose, CA

Active since June 19, 2006PECOS Enrolled
80.58/100
CMS Quality Rating
751 S BASCOM AVE, OB/GYN DEPARTMENT, SAN JOSE, CA 95128(408) 885-5000 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About James Daniel Byrne Md NPPES

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

JAMES DANIEL BYRNE MD (NPI 1831134097) is an individual maternal & fetal medicine provider in San Jose, California, licensed in California (G74780) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831134097
Entity TypeIndividualMale
Primary Taxonomy207VM0101X
Provider Legal NameJAMES DANIEL BYRNECredential: MD
Location Address751 S BASCOM AVE, OB/GYN DEPARTMENTSan Jose, CA 95128-2604
Mailing Address751 S Bascom Ave, Ob Gyn DeptSan Jose, CA 95128-2604 · (408) 885-5000
Phone(408) 885-5000
Sole ProprietorNo
Enumeration DateJune 19, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1831134097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in CA · G74780
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License G74780 (CA)

Other Identifiers 1

Medicaid00G747800CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James Daniel Byrne Md 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 Reassignment

Medicare enrollment records show James Byrne reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Santa Clara
Clinic/Center
2100 FOREST AVE
San Jose, CA 95128
  • Reassigned Medicare billing, California enrollment
  • 2,460 clinicians in this Medicare group
NPI 1073265914 (408) 454-2626

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 95128 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

80.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality67.43
Promoting Interoperability100
Improvement Activities40
Cost46.5

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.

MS. TRANG N NGUYEN PHARM.D
Pharmacist
751 S BASCOM AVE
SAN JOSE, CA 95128
Santa Clara County (408) 885-2360
DR. ILANA TRAYNIS M.D.
Student in an Organized Health Care Education/Training Program
751 S BASCOM AVE, DEPARTMENT OF MEDICINE
SAN JOSE, CA 95128
Santa Clara County (408) 885-6300
DR. ABBY KATHERINE SCURFIELD MD
Student in an Organized Health Care Education/Training Program
751 S BASCOM AVE
SAN JOSE, CA 95128
Santa Clara County (408) 885-5000
GABRIELLE MINEHAN CCP
Perfusionist
751 S BASCOM AVE
SAN JOSE, CA 95128
Santa Clara County (408) 885-5000
PRIYA NIGAM MD
Student in an Organized Health Care Education/Training Program
751 S BASCOM AVE
SAN JOSE, CA 95128
Santa Clara County (408) 885-5000
CAROLINE DENISON JORDAN
Student in an Organized Health Care Education/Training Program
751 S BASCOM AVE
SAN JOSE, CA 95128
Santa Clara County (408) 885-5000
MICHAEL NATHANSON MD, PHD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
751 S BASCOM AVE, CARDIAC SURGERY DEPT
SAN JOSE, CA 95128
Santa Clara County (408) 885-5000
EAMONN PATRICK DUNPHY MD
Internal Medicine
751 S BASCOM AVE, RADIATION ONCOLOGY
SAN JOSE, CA 95128
Santa Clara County (408) 885-4150

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 Byrne's NPI number?

The NPI number for James Byrne is 1831134097. It was assigned to this individual provider in the NPPES registry on June 19, 2006.

Where is James Byrne located?

James Byrne practices at 751 S Bascom Ave Ob/Gyn Department, San Jose, CA 95128. The listed phone number is (408) 885-5000.

What is James Byrne's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is James Byrne enrolled in Medicare?

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

Which organization bills Medicare for James Byrne's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Byrne reassigns Medicare benefits to County Of Santa Clara (San Jose, CA). The 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 Byrne'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 Byrne was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.