Dennis Grewal, DO
Cardiovascular Disease Physician · Santa Ana, CA
Dennis Grewal, DO is a cardiovascular disease physician with a practice address in Santa Ana, California, and NPI 1538556592, issued on Apr 16, 2015. Check the license (California 15476, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dennis Grewal
- Credential
- DO
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 15476 CA
20A15476 CA
Self-reported in NPPES; status is on the state search - Practice location
- 700 N Tustin Ave, Santa Ana, CA 92705
- Phone
- (714) 245-1444
- Enumerated
- Apr 16, 2015
- Record last updated
- Apr 7, 2025
- Fax
- (714) 245-1444
- Medicare enrollment
- Enrolled (PECOS I20180920000704); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 700 N Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ali Ashtiani, M.D.Cardiovascular Disease Physician1295155588
- Stephen Cohen, M.D.Specialist1225031586
- Bahram Eslami, M.D.Specialist1033112313
- Mahmoud Eslami Farsani, MDSpecialist1487659637
- Ravi Masson, MDInterventional Cardiology Physician1114423001
- Paul Meltzer, M.D.Specialist1982609145
Verify Dennis Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 15476Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,611 Medicare Part D claims for 337 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium249 claims
- Metoprolol Succinate184 claims
- Eliquis110 claims
- Losartan Potassium105 claims
- Carvedilol91 claims
- Amlodipine Besylate87 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: $1,717.74
15 payments; by number, the most common kind was food and beverage; the largest payer was ShockWave Medical, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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 one group practice
- Cardiology Specialists OF Orange CountySanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
Other cardiovascular disease physician records in California
- Abdul Abbasi, MDLong Beach, CA1710071717
- Siddique Abbasi, MDThousand Oaks, CA1528076718
- Lillian Abdelmalek, MDSacramento, CA1881343796
- Robin Abdelmalik, M.D. FACCTemecula, CA1275656662
- Roberto Abdelnur, MDEl Centro, CA1982648606
- Sohail Abdi-Moradi, M.D.Moorpark, CA1376862938
- Nadia Abelhad, M.D.Chula Vista, CA1619400801
- Georges Abou Rjaili, MDRiverside, CA1073896544
- Jamil Aboulhosn, MDLos Angeles, CA1356382717
- Maria Abraham, M.D.San Francisco, CA1669436960
Common questions
What is Dennis Grewal, DO's NPI number?
Dennis Grewal, DO's National Provider Identifier (NPI) is 1538556592, issued on Apr 16, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Grewal, DO located?
The NPPES record lists a practice address at 700 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 245-1444. Providers update this record themselves, so call before visiting.
How can I verify Dennis Grewal, DO's license?
NPPES lists California license number 15476, 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 Dennis Grewal, DO prescribe under Medicare Part D?
In 2024, Dennis Grewal, DO had 1,611 Medicare Part D claims for 337 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.