John Clancy, DO
Internal Medicine Physician · Vista, CA
John Clancy, DO is an internal medicine physician with a practice address in Vista, California, and NPI 1962506238, issued on Sep 8, 2006. Check the license (California 20A9614, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Clancy
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 20A9614 CA
036093708 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2375 S Melrose Dr, Vista, CA 92081
- Phone
- (760) 305-1900
- Enumerated
- Sep 8, 2006
- Record last updated
- Nov 19, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (760) 305-1910
- Medicare enrollment
- Enrolled (PECOS I20141118000661); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2375 S Melrose Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tara Clancy, D.O.Pediatrics Physician1588086003
- Anna Graves, PA-CPhysician Assistant1689435430
- Lissande Laverty, PA-CPhysician Assistant1285142125
Verify John Clancy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A9614Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average internal medicine physician in 2024
4,432 Medicare Part D claims for 472 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 156 claims were for opioids.
Most prescribed
- Atorvastatin Calcium247 claims
- Amlodipine Besylate214 claims
- Lisinopril209 claims
- Levothyroxine Sodium168 claims
- Metformin Hcl158 claims
- Omeprazole134 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.
Bills Medicare through one group practice
- John H Clancy DO And Tara Leigh Clancy DO Medical CorporationVista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Clancy among 17,696 internal medicine physician records in California
John Clancy, DO 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 fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2018 · 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).
43 internal medicine physician records list a practice address in Vista
They are 43 of the 2,017 NPPES records with a practice address in Vista, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Vista → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Stanislaw Bankowski, MDVista, CA 920811922748706
- Maryam Barangi, MDVista, CA 920811528626918
- Sam Baroudi, MDVista, CA 920811316936933
- Franklin Galef, MDVista, CA 920811164439667
- Stuart Kipper, M.D.Vista, CA 920811114956570
- Kareem Moasis, MDVista, CA 920811538695572
- Christine Nguyen, MDVista, CA 920811750483590
- Emad Abu-Khieran, MDVista, CA 920831558314237
Common questions
What is John Clancy, DO's NPI number?
John Clancy, DO's National Provider Identifier (NPI) is 1962506238, issued on Sep 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Clancy, DO located?
The NPPES record lists a practice address at 2375 S Melrose Dr, Vista, CA, 92081. Phone: (760) 305-1900. Providers update this record themselves, so call before visiting.
How can I verify John Clancy, DO's license?
NPPES lists California license number 20A9614, 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 John Clancy, DO prescribe under Medicare Part D?
In 2024, John Clancy, DO had 4,432 Medicare Part D claims for 472 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.