Carl Gray, MD
NPI 1326126152 · Family Medicine Physician · Hayward, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carl Gray, MD is a Family Medicine Physician provider in Hayward, CA (NPI 1326126152).
Provider details
- NPI number
- 1326126152
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A92884 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 63 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 180 | 66 |
| Metformin Hcl | 126 | 44 |
| Amlodipine Besylate | 102 | 40 |
| Levothyroxine Sodium | 89 | 30 |
| Lisinopril | 80 | 25 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 70 | 23 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is Carl Gray's NPI number?
- Carl Gray's National Provider Identifier (NPI) is 1326126152, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carl Gray's specialty?
- Carl Gray is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Carl Gray located?
- Carl Gray's practice location on file with NPPES is 22331 Mission Blvd, Hayward, CA 94541-3911.
- What is Carl Gray's phone number?
- The practice phone number listed in the NPPES registry for Carl Gray is (510) 471-5880.
- Does Carl Gray accept Medicare?
- Carl Gray is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carl Gray's NPI active?
- Yes — Carl Gray's NPI (1326126152) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.