1. Home
  2. Directory
  3. California
  4. Martinez
  5. Internal Medicine
  6. NPI Profile

GABRIELA DIAZ SULLIVAN MD
NPI 1275620023
Internal Medicine in Martinez, CA

Active since October 05, 2006PECOS Enrolled
2500 ALHAMBRA AVENUE, MARTINEZ, CA 94553(925) 370-5110(925) 370-5142 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Gabriela Diaz Sullivan Md NPPES

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

GABRIELA DIAZ SULLIVAN MD (NPI 1275620023) is an individual internal medicine provider in Martinez, California, licensed in California (A77056) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275620023
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameGABRIELA DIAZ SULLIVANCredential: MD
Location Address2500 ALHAMBRA AVENUEMartinez, CA 94553-3156
Mailing Address50 Douglas Drive Suite 391Martinez, CA 94553-4098 · (925) 957-5429 · Fax (925) 957-5401
Phone(925) 370-5110
Fax(925) 370-5142
Sole ProprietorNo
Enumeration DateOctober 5, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1275620023 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A77056
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

2500 ALHAMBRA AVENUE, Martinez, CA 94553
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINI12146

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gabriela Diaz Sullivan 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94553 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers19 claims19 services$201.35 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

GARY P YEE DDS
Dentist
2500 ALHAMBRA AVENUE
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110
DOMENIC CAVALLARO DDS
Dentist
2500 ALHAMBRA AVENUE, CONTRA COSTA REGIONAL MEDICAL CENTER AND HEALTH CENTERS
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110
SUNTHARA HAY DO
Obstetrics & Gynecology
2500 ALHAMBRA AVENUE, CONTRA COSTA REGIONAL MEDICAL CENTER AND HEALTH CENTERS
2500 ALHAMBRA AVENUE, CA 94553
Contra Costa County (925) 370-5110
ALINA YEGISHEYEVNA FARAMAZYAN MD
Psychiatry & Neurology (Psychiatry)
2500 ALHAMBRA AVENUE, CONTRA COSTA REGIONAL MEDICAL CENTER AND HEALTH CENTERS
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110
SARA LEE CHAN DDS
Dentist
2500 ALHAMBRA AVENUE
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110
LINDA NAKELL PHD
Psychologist (Psychoanalysis)
2500 ALHAMBRA AVENUE, CONTRA COSTA REGIONAL MEDICAL CENTER AND HEALTH CENTERS
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110
R JONATHAN STANGER MD
Emergency Medicine
2500 ALHAMBRA AVENUE, CONTRA COSTA REGIONAL MEDICAL CENTER AND HEALTH CENTERS
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110
SARA KATE LEVIN MD
Internal Medicine
2500 ALHAMBRA AVENUE, CONTRA COSTA REGIONAL MEDICAL CENTER AND HEALTH CENTERS
MARTINEZ, CA 94553
Contra Costa County (925) 370-5110

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 Gabriela Sullivan's NPI number?

The NPI number for Gabriela Sullivan is 1275620023. It was assigned to this individual provider in the NPPES registry on October 5, 2006.

Where is Gabriela Sullivan located?

Gabriela Sullivan practices at 2500 Alhambra Avenue, Martinez, CA 94553. The listed phone number is (925) 370-5110.

What is Gabriela Sullivan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gabriela Sullivan enrolled in Medicare?

Yes. Gabriela Sullivan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gabriela Sullivan was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.