William D. Carter, MD
Diagnostic Radiology Physician · San Diego, CA
William D. Carter, MD is a diagnostic radiology physician with a practice address in San Diego, California, and NPI 1972577922, issued on Feb 15, 2006. Check the license (California C40270, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William D. Carter
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- C40270 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8745 Aero Drive, San Diego, CA 92123
- Phone
- (858) 565-0950
- Enumerated
- Feb 15, 2006
- Record last updated
- Oct 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (858) 244-1100
- Medicaid IDs
- GR0083810 CA
GR0083812 CA
ZZZ75341Z CA
GR0083815 CA - Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 8745 Aero Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William D. Carter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C40270Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
22 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D.
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.
William D. Carter among 4,500 diagnostic radiology physician records in California
William D. Carter, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in San Diego → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- John Amberg, MDSan Diego, CA 921231881668838
- John Dente, MDSan Diego, CA 921231407820699
- Robert Flynn, MDSan Diego, CA 921231851365803
- Jonathan Gurney, MDSan Diego, CA 921231689647356
- Russell Low, MDSan Diego, CA 921231497729446
- James Lyon, MDSan Diego, CA 921231689647331
- Clinton Nichols, MDSan Diego, CA 921231750355657
- Michael Puckett, MDSan Diego, CA 921231043284235
Common questions
What is William D. Carter, MD's NPI number?
William D. Carter, MD's National Provider Identifier (NPI) is 1972577922, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William D. Carter, MD located?
The NPPES record lists a practice address at 8745 Aero Drive, San Diego, CA, 92123. Phone: (858) 565-0950. Providers update this record themselves, so call before visiting.
How can I verify William D. Carter, MD's license?
NPPES lists California license number C40270, 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 William D. Carter, MD prescribe under Medicare Part D?
In 2024, William D. Carter, MD had 22 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. 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.