Arthur Gruen, M.D.
Emergency Medicine Physician · San Diego, CA
Arthur Gruen, M.D. is an emergency medicine physician with a practice address in San Diego, California, and NPI 1376511303, issued on Mar 8, 2006. Check the license (California G63375, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Arthur Gruen
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G63375 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7901 Frost St, San Diego, CA 92123
- Phone
- (619) 541-3400
- Enumerated
- Mar 8, 2006
- Record last updated
- Jul 19, 2026
- Fax
- (619) 285-5999
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 7901 Frost St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aileen Afshar, MDInternal Medicine Physician1134689946
- Saad Alkhider, MDInternal Medicine Physician1447712062
- Mustafa Alwash, M.DHospitalist Physician1679936439
- Alexandra Anjier, MDEmergency Medicine Physician1467087510
- Anna Astashchanka, MDPulmonary Disease Physician1821594359
- Amir Bahreman, M.D.Internal Medicine Physician1124249388
Verify Arthur Gruen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G63375Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average emergency medicine physician in 2024
33 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Arthur Gruen among 7,751 emergency medicine physician records in California
Arthur Gruen, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Diego → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joseph Bellezzo, M.D.San Diego, CA 921231760450340
- William Carter, M.D.San Diego, CA 921231457329062
- Delbert Clark, D.O.San Diego, CA 921231194799593
- Heather Conrad, M.D.San Diego, CA 921231205813409
- Andrew Desjardins, M.D.San Diego, CA 921231396713103
- William Fornaciari, M.D.San Diego, CA 921231083682546
- Lolie Fromm, M.D.San Diego, CA 921231457329096
- Christopher Ho, M.D.San Diego, CA 921231821066457
Common questions
What is Arthur Gruen, M.D.'s NPI number?
Arthur Gruen, M.D.'s National Provider Identifier (NPI) is 1376511303, issued on Mar 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Arthur Gruen, M.D. located?
The NPPES record lists a practice address at 7901 Frost St, San Diego, CA, 92123. Phone: (619) 541-3400. Providers update this record themselves, so call before visiting.
How can I verify Arthur Gruen, M.D.'s license?
NPPES lists California license number G63375, 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 Arthur Gruen, M.D. prescribe under Medicare Part D?
In 2024, Arthur Gruen, M.D. had 33 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.