Gagandeep Grewal, M.D.
Emergency Medicine Physician · Santa Ana, CA
Gagandeep Grewal, M.D. is an emergency medicine physician with a practice address in Santa Ana, California, and NPI 1285675314, issued on Jun 9, 2006. Check the license (California A68101, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gagandeep Grewal
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A68101 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 N Tustin Ave, Santa Ana, CA 92705
- Phone
- (714) 953-3500
- Enumerated
- Jun 9, 2006
- Record last updated
- Nov 30, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050607000782); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1001 N Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stewart Brash, M.D.Emergency Medicine Physician1427001163
- Steven Bui, D.O.Anesthesiology Physician1508252883
- Anne Castle, P.A.Physician Assistant1669424206
- Julia Celani, P.T.Physical Therapist1659349165
- Omar Chowdhry, D.O.Anesthesiology Physician1972735074
- Catherine Chung, MDAnesthesiology Physician1205820586
Verify Gagandeep Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A68101Check 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% fewer Medicare Part D claims than the average emergency medicine physician in 2024
79 Medicare Part D claims for 50 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America - CaliforniaRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gagandeep Grewal among 7,751 emergency medicine physician records in California
Gagandeep Grewal, 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 fileYes · 59% of these records are
- Graduated1997 · median 2011 among the 4,560 with a school on file
- Record last updated2014 · 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 Santa Ana → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Mojgan Amirkhan, M.D.Santa Ana, CA 927051508936907
- Stewart Brash, M.D.Santa Ana, CA 927051427001163
- Micheline Ghurabi, M.D.Santa Ana, CA 927051447298013
- Gary Godorov, M.D.Santa Ana, CA 927051437197068
- Vu Huynh, D.O.Santa Ana, CA 927051841461399
- Imran Imam, M.D.Santa Ana, CA 927051487820536
- Joseph Kim, M.D.Santa Ana, CA 927051841224201
- Kenneth Rich, MDSanta Ana, CA 927051801816004
Common questions
What is Gagandeep Grewal, M.D.'s NPI number?
Gagandeep Grewal, M.D.'s National Provider Identifier (NPI) is 1285675314, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gagandeep Grewal, M.D. located?
The NPPES record lists a practice address at 1001 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 953-3500. Providers update this record themselves, so call before visiting.
How can I verify Gagandeep Grewal, M.D.'s license?
NPPES lists California license number A68101, 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 Gagandeep Grewal, M.D. prescribe under Medicare Part D?
In 2024, Gagandeep Grewal, M.D. had 79 Medicare Part D claims for 50 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Gagandeep Grewal, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.