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CARL O. GRAY MD
NPI 1326126152
Family Medicine in Hayward, CA

Active since November 01, 2006PECOS Enrolled
22331 MISSION BLVD, HAYWARD, CA 94541(510) 471-5880 Get Directions Write a Review

NPPES record last updated: April 27, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 27, 2026, Dec 13, 2021 (2 updates tracked since 2021).

About Carl O. Gray Md NPPES

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

CARL O. GRAY MD (NPI 1326126152) is an individual family medicine provider in Hayward, California, licensed in California (A92884) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1326126152
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameCARL O. GRAYCredential: MD
Location Address22331 MISSION BLVDHayward, CA 94541-3911
Mailing Address22331 Mission BlvdHayward, CA 94541-3911 · (510) 471-5880
Phone(510) 471-5880
Sole ProprietorNo
Enumeration DateNovember 1, 2006
Last NPPES UpdateApril 27, 20262 updates tracked since enumeration
NPPES CertifiedApril 27, 2026
✔ NPI 1326126152 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A92884
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
22331 MISSION BLVD, Hayward, CA 94541
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Other Identifiers 1

Medicaid00A928840CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Carl O. Gray 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 Reassignments

2

Medicare enrollment records show Carl Gray reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tiburcio Vasquez Health Center, Inc.
Same address
Federally Qualified Health Center (FQHC)
22331 MISSION BLVD
Hayward, CA 94541
  • Reassigned Medicare billing, California enrollment
  • 25 clinicians in this Medicare group
NPI 1073676243 (510) 471-5880
Permanente Medical Group Inc
15 mi
Internal Medicine
1190 VETERANS BLVD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1639252604 (650) 299-2000

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 94541 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.

DR. EUNICE DIZON DDS
Dentist (General Practice)
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880
DR. MELISSA ROSE MD
Pediatrics
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880
TIBURCIO VASQUEZ HEALTH CENTER, INC.
Clinic/Center (Federally Qualified Health Center (FQHC))
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880
JASMINE SANCHEZ RIVAS
Dentist
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880
NATALIE RAMIREZ CNM
Advanced Practice Midwife
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880
GABRIELA MARIA CHICA
Nurse Practitioner (Pediatrics)
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5907
JESSICA PRICE FNP-C
Nurse Practitioner
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880
JACQUELINE JOYA B.S
Counselor
22331 MISSION BLVD
HAYWARD, CA 94541
Alameda County (510) 471-5880

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 Carl Gray's NPI number?

The NPI number for Carl Gray is 1326126152. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Carl Gray located?

Carl Gray practices at 22331 Mission Blvd, Hayward, CA 94541. The listed phone number is (510) 471-5880.

What is Carl Gray's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Carl Gray enrolled in Medicare?

Yes. Carl Gray is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Carl Gray's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carl Gray reassigns Medicare benefits to 2 organizations: Tiburcio Vasquez Health Center, Inc. (Hayward, CA) and Permanente Medical Group Inc (Redwood City, 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 Carl Gray'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 Carl Gray was last updated on April 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.