Sonia Ralli Grewal, M.D.
Internal Medicine Physician · Newport Beach, CA
Sonia Ralli Grewal, M.D. is an internal medicine physician with a practice address in Newport Beach, California, and NPI 1154512663, issued on Aug 8, 2007. Check the license (California A95350, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sonia Ralli Grewal
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A95350 CA
Self-reported in NPPES; status is on the state search - Practice location
- 520 Superior Ave Ste 390, Newport Beach, CA 92663
- Phone
- (949) 548-3177
- Enumerated
- Aug 8, 2007
- Record last updated
- Mar 13, 2026
- Fax
- (949) 548-3412
- Medicare enrollment
- Enrolled (PECOS I20080121000039); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 520 Superior Ave Ste 390
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Farzana Naqvi, M.D.Endocrinology, Diabetes & Metabolism Physician1588734743
- Syed Naqvi, M.D.Pulmonary Disease Physician1518037225
Verify Sonia Ralli Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A95350Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% more Medicare Part D claims than the average internal medicine physician in 2024
3,760 Medicare Part D claims for 434 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Levothyroxine Sodium357 claims
- Synthroid332 claims
- Ozempic286 claims
- Metformin Hcl Er203 claims
- Farxiga198 claims
- Rosuvastatin Calcium178 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: $86.52
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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 one group practice
- Naqvi And Naqvi MD IncNewport Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sonia Ralli Grewal among 17,696 internal medicine physician records in California
Sonia Ralli Grewal, M.D. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2004 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
94 internal medicine physician records list a practice address in Newport Beach
They are 94 of the 4,414 NPPES records with a practice address in Newport Beach, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Newport Beach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Brouwer, MDNewport Beach, CA 926631629018544
- William Bruce, MDNewport Beach, CA 926631265490890
- Gary Carlson, MDNewport Beach, CA 926631497700116
- David Chun, MDNewport Beach, CA 926631730152976
- Dennis Jordanides, M.D.Newport Beach, CA 926631285638031
- Kambiz Karimi, MDNewport Beach, CA 926631720061823
- Gregory Katz, MDNewport Beach, CA 926631184674178
- Cameron Khavarian, M.D.Newport Beach, CA 926631104871938
Common questions
What is Sonia Ralli Grewal, M.D.'s NPI number?
Sonia Ralli Grewal, M.D.'s National Provider Identifier (NPI) is 1154512663, issued on Aug 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sonia Ralli Grewal, M.D. located?
The NPPES record lists a practice address at 520 Superior Ave Ste 390, Newport Beach, CA, 92663. Phone: (949) 548-3177. Providers update this record themselves, so call before visiting.
How can I verify Sonia Ralli Grewal, M.D.'s license?
NPPES lists California license number A95350, 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 Sonia Ralli Grewal, M.D. prescribe under Medicare Part D?
In 2024, Sonia Ralli Grewal, M.D. had 3,760 Medicare Part D claims for 434 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.