Caroline T. Diamant, M.D.
Gastroenterology Physician · San Diego, CA
Caroline T. Diamant, M.D. is a gastroenterology physician with a practice address in San Diego, California, and NPI 1346345949, issued on Sep 14, 2006. Check the license (California G66865, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Caroline T. Diamant
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G66865 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3811 Valley Centre Dr, San Diego, CA 92130
- Phone
- (858) 764-3200
- Enumerated
- Sep 14, 2006
- Record last updated
- Mar 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 00G668650 CA
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 3811 Valley Centre Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Munira AbdiNurse Practitioner1124418793
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- Jeffrey Applestein, M.D.Internal Medicine Physician1427011212
- Dayna Arnstein Temby, M. D.Internal Medicine Physician1497718324
- Lavannya Atri, MDInternal Medicine Physician1285320754
- Gregory Babikian, M.D.Internal Medicine Physician1497719892
Verify Caroline T. Diamant in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average gastroenterology physician in 2024
33 Medicare Part D claims for 22 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Famotidine19 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: $74.13
3 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Caroline T. Diamant among 2,140 gastroenterology physician records in California
Caroline T. Diamant, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2020 · 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 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in San Diego → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Chiara MaruggiSan Diego, CA 921301578094132
- Brett Sadowski, M.D.San Diego, CA 921301669810701
- Thuy Anh Le, M.D.San Diego, CA 921311811163926
- Erin Song, MDSan Diego, CA 921311275094344
- Joshua Steichen, M.D.San Diego, CA 921311659503688
- John Lyons, M.D.San Diego, CA 921281417156068
- Kristina Seeger, M.D.San Diego, CA 921281598022303
- Emily Singh, M.D.San Diego, CA 921281548370935
Common questions
What is Caroline T. Diamant, M.D.'s NPI number?
Caroline T. Diamant, M.D.'s National Provider Identifier (NPI) is 1346345949, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Caroline T. Diamant, M.D. located?
The NPPES record lists a practice address at 3811 Valley Centre Dr, San Diego, CA, 92130. Phone: (858) 764-3200. Providers update this record themselves, so call before visiting.
How can I verify Caroline T. Diamant, M.D.'s license?
NPPES lists California license number G66865, 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 Caroline T. Diamant, M.D. prescribe under Medicare Part D?
In 2024, Caroline T. Diamant, M.D. had 33 Medicare Part D claims for 22 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.