Amy B. Witman, M.D.
Internal Medicine Physician · San Diego, CA
Amy B. Witman, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1679670327, issued on Sep 17, 2006. Check the license (California G77904, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Amy B. Witman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G77904 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12395 EL Camino Real Ste 115, San Diego, CA 92130
- Phone
- (858) 724-1313
- Enumerated
- Sep 17, 2006
- Record last updated
- Jan 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (858) 724-1314
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Amy B. Witman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77904Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,681 Medicare Part D claims for 132 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Levothyroxine Sodium99 claims
- Atorvastatin Calcium98 claims
- Amlodipine Besylate83 claims
- Losartan Potassium53 claims
- Rosuvastatin Calcium47 claims
- Trazodone Hcl45 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: $587.64
18 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Amy B. Witman among 17,696 internal medicine physician records in California
Amy B. Witman, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Applestein, M.D.San Diego, CA 921301427011212
- Dayna Arnstein Temby, M. D.San Diego, CA 921301497718324
- Gregory Babikian, M.D.San Diego, CA 921301497719892
- Marilyn Carlin, M.D.San Diego, CA 921301124123088
- Scott Carstens, M.D.San Diego, CA 921301073618831
- Ilia Christy, M.D.San Diego, CA 921301043226889
- Julie Chu, M.D.San Diego, CA 921301174532410
- Julie Gollin, M.D.San Diego, CA 921301841253531
Common questions
What is Amy B. Witman, M.D.'s NPI number?
Amy B. Witman, M.D.'s National Provider Identifier (NPI) is 1679670327, issued on Sep 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Amy B. Witman, M.D. located?
The NPPES record lists a practice address at 12395 EL Camino Real Ste 115, San Diego, CA, 92130. Phone: (858) 724-1313. Providers update this record themselves, so call before visiting.
How can I verify Amy B. Witman, M.D.'s license?
NPPES lists California license number G77904, 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 Amy B. Witman, M.D. prescribe under Medicare Part D?
In 2024, Amy B. Witman, M.D. had 1,681 Medicare Part D claims for 132 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.