Carl O. Gray, MD
Family Medicine Physician · Hayward, CA
Carl O. Gray, MD is a family medicine physician with a practice address in Hayward, California, and NPI 1326126152, issued on Nov 1, 2006. Check the license (California A92884, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Carl O. Gray
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A92884 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22331 Mission Blvd, Hayward, CA 94541
- Phone
- (510) 471-5880
- Enumerated
- Nov 1, 2006
- Record last updated
- Apr 27, 2026
- Medicaid ID
- 00A928840 CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 22331 Mission Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yamilet Abaunza, MSW, ASWClinical Social Worker1144605429
- Jia Qi Abdon, FNPFamily Nurse Practitioner1326773441
- Jose AguirreCounselor1235822677
- Elaine Ahn, NPFamily Nurse Practitioner1639901739
- Ziba Amed, ODOptometrist1457623266
- Lauren AndersonFamily Nurse Practitioner1952942955
Verify Carl O. Gray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A92884Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average family medicine physician in 2024
2,382 Medicare Part D claims for 280 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium180 claims
- Metformin Hcl126 claims
- Amlodipine Besylate102 claims
- Levothyroxine Sodium89 claims
- Lisinopril80 claims
- Gabapentin70 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $22.69
1 payment: food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Carl O. Gray among 17,133 family medicine physician records in California
Carl O. Gray, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Hayward → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Russell Blackburn, MDHayward, CA 945411265448716
- Jagveer KaurHayward, CA 945411124718341
- Michael MartinezHayward, CA 945411790923886
- Arkady Massen, M.D.Hayward, CA 945411306943626
- John Taylor, MDHayward, CA 945411609871532
- Stephanie Fung, M.D.Hayward, CA 945421326291196
- Abayomi Jones, M.D.Hayward, CA 945421073782520
- Harshad Wadhar, MDHayward, CA 945421124197660
Common questions
What is Carl O. Gray, MD's NPI number?
Carl O. Gray, MD's National Provider Identifier (NPI) is 1326126152, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Carl O. Gray, MD located?
The NPPES record lists a practice address at 22331 Mission Blvd, Hayward, CA, 94541. Phone: (510) 471-5880. Providers update this record themselves, so call before visiting.
How can I verify Carl O. Gray, MD's license?
NPPES lists California license number A92884, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Carl O. Gray, MD prescribe under Medicare Part D?
In 2024, Carl O. Gray, MD had 2,382 Medicare Part D claims for 280 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.