Stephen Sun, DO
Internal Medicine Physician · Coronado, CA
Stephen Sun, DO is an internal medicine physician with a practice address in Coronado, California, and NPI 1437644242, issued on Jun 25, 2018. Check the license (California 20A18000, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Sun
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A18000 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 Prospect PL, Coronado, CA 92118
- Phone
- (619) 522-3600
- Enumerated
- Jun 25, 2018
- Record last updated
- Aug 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210518002239); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 250 Prospect PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephen Sun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A18000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
334 Medicare Part D claims for 164 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
- Cefuroxime25 claims
- Furosemide20 claims
- Hydrocodone-Acetaminophen20 claims
- Prednisone18 claims
- Amoxicillin-Clavulanate Potass17 claims
- Doxycycline Hyclate17 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: $110.13
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, 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.
Bills Medicare through 2 group practices
- Emergency And Acute Care Medical CorporationCoronado, CA
- San Diego Critical Care Medical Group IncLa Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Sun among 17,696 internal medicine physician records in California
Stephen Sun, 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 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2018 · 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).
7 internal medicine physician records list a practice address in Coronado
They are 7 of the 288 NPPES records with a practice address in Coronado, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Coronado → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Genevieve Bloom, M.D.Coronado, CA 921181376537076
- Gina Casian, M.D.Coronado, CA 921181568677151
- Amir FahidCoronado, CA 921181568740355
- Tyler Mitchell, MDCoronado, CA 921181831718931
- Deanna Oliver, MDSan Diego, CA 921181750725362
- Laura Petrovich, MDCoronado, CA 921181891800116
- Sanjay Rajpara, MDCoronado, CA 921181225116130
- Abraham Eskenazi, MDSan Diego, CA 921171093774168
Common questions
What is Stephen Sun, DO's NPI number?
Stephen Sun, DO's National Provider Identifier (NPI) is 1437644242, issued on Jun 25, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Sun, DO located?
The NPPES record lists a practice address at 250 Prospect PL, Coronado, CA, 92118. Phone: (619) 522-3600. Providers update this record themselves, so call before visiting.
How can I verify Stephen Sun, DO's license?
NPPES lists California license number 20A18000, 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 Stephen Sun, DO prescribe under Medicare Part D?
In 2024, Stephen Sun, DO had 334 Medicare Part D claims for 164 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.