NPPES file of Aug 9, 2026

David Fan, M.D.

Internal Medicine Physician · San Diego, CA

David Fan, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1326488040, issued on Jun 26, 2013. Check the license (California A140367, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326488040
Name
David Fan
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A140367 CA
Self-reported in NPPES; status is on the state search
Practice location
4650 Palm Ave, San Diego, CA 92154
Phone
(800) 290-5000
Enumerated
Jun 26, 2013
Record last updated
Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20161104001643); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →

Also registered at 4650 Palm Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Samuel Amukele, MDUrology Physician1871570341
  2. David Anderson, P.T.Orthopedic Physical Therapist1689879215
  3. Lauren Aragon, PHARMDPharmacist1689110827
  4. Michelle Brodie, MSNeurology Physical Therapist1467659607
  5. La Monica CervantesMarriage & Family Therapist1548896772
  6. Henry Chan, PHARM.D.Pharmacist1114197100

Verify David Fan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A140367    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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31% more Medicare Part D claims than the average internal medicine physician in 2024

4,159 Medicare Part D claims for 663 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 91 claims were for opioids.

  1. David Fan4,159
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium284 claims
  2. Levothyroxine Sodium148 claims
  3. Rosuvastatin Calcium126 claims
  4. Lisinopril117 claims
  5. Pantoprazole Sodium116 claims
  6. Prednisone111 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: $68.34

1 payment: food and beverage; the largest payer was BioCryst US Sales Co., LLC. 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.

  1. David Fan$68.34
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupAliso Viejo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

David Fan among 17,696 internal medicine physician records in California

David Fan, 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 2013, is newer than 71% of them.

  • NPI issued2013 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2012 · median 2004 among the 11,065 with a school on file
  • Record last updated2021 · 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

  1. Benedict Dillon, M.D.San Diego, CA 921541710142708
  2. Sameeh Fakhro, MDSan Diego, CA 921541245718865
  3. Christopher Fields, MDSan Diego, CA 921541427623677
  4. Ralph Johnson, M.D.San Diego, CA 921541669673505
  5. Silvia Munoz, M.D.San Diego, CA 921541326458613
  6. Parvaneh Najafi, M.D.San Diego, CA 921541275771974
  7. Fauzi Najar, MDSan Diego, CA 921541689166977
  8. Miguel Pena-Ruiz, M.D.San Diego, CA 921541063622819

Common questions

What is David Fan, M.D.'s NPI number?

David Fan, M.D.'s National Provider Identifier (NPI) is 1326488040, issued on Jun 26, 2013. An NPI identifies a provider in billing; it is not a license.

Where is David Fan, M.D. located?

The NPPES record lists a practice address at 4650 Palm Ave, San Diego, CA, 92154. Phone: (800) 290-5000. Providers update this record themselves, so call before visiting.

How can I verify David Fan, M.D.'s license?

NPPES lists California license number A140367, 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 David Fan, M.D. prescribe under Medicare Part D?

In 2024, David Fan, M.D. had 4,159 Medicare Part D claims for 663 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.