David R. Simon, MD
Internal Medicine Physician · Anaheim, CA
David R. Simon, MD is an internal medicine physician with a practice address in Anaheim, California, and NPI 1922089135, issued on Nov 7, 2005. Check the license (California G57931, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David R. Simon
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G57931 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 S Anaheim Blvd Ste 101, Anaheim, CA 92805
- Phone
- (714) 826-1200
- Enumerated
- Nov 7, 2005
- Record last updated
- Nov 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 00G579310 CA
- Medicare enrollment
- Enrolled (PECOS I20040526000778); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 100 S Anaheim Blvd Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David R. Simon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57931Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% more Medicare Part D claims than the average internal medicine physician in 2024
5,242 Medicare Part D claims for 339 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. 21 claims were for opioids.
Most prescribed
- Atorvastatin Calcium532 claims
- Amlodipine Besylate294 claims
- Metformin Hcl188 claims
- Metoprolol Succinate170 claims
- Benazepril Hcl162 claims
- Losartan Potassium161 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
- Memorialcare Medical FoundationAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David R. Simon among 17,696 internal medicine physician records in California
David R. Simon, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 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).
189 internal medicine physician records list a practice address in Anaheim
They are 189 of the 9,018 NPPES records with a practice address in Anaheim, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Anaheim → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maritess Aranas, D.O.Anaheim, CA 928051326145079
- Raffi Hodikian, M.D.Anaheim, CA 928051760633630
- Anne Onyekwuluje, MDAnaheim, CA 928051649210493
- Huy Pham, M.D.Anaheim, CA 928051083780274
- Joey Santos, M.D.Anaheim, CA 928051386656114
- Andrieu Aguinaldo, MDAnaheim, CA 928041568164572
- Gautam Anugu, MDAnaheim, CA 928041407476468
- Adarsha Bajracharya, MDAnaheim, CA 928041689855561
Common questions
What is David R. Simon, MD's NPI number?
David R. Simon, MD's National Provider Identifier (NPI) is 1922089135, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David R. Simon, MD located?
The NPPES record lists a practice address at 100 S Anaheim Blvd Ste 101, Anaheim, CA, 92805. Phone: (714) 826-1200. Providers update this record themselves, so call before visiting.
How can I verify David R. Simon, MD's license?
NPPES lists California license number G57931, 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 R. Simon, MD prescribe under Medicare Part D?
In 2024, David R. Simon, MD had 5,242 Medicare Part D claims for 339 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.