Sharon Grewal, MD
Internal Medicine Physician · Northridge, CA
Sharon Grewal, MD is an internal medicine physician with a practice address in Northridge, California, and NPI 1831719624, issued on Apr 21, 2020. Check the license (California A197172, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sharon Grewal
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A197172 CA
MD218612 OR
Self-reported in NPPES; status is on the state search - Practice location
- 18546 Roscoe Blvd Ste 300, Northridge, CA 91324
- Phone
- (818) 886-4028
- Enumerated
- Apr 21, 2020
- Record last updated
- Feb 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20250328002563); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 18546 Roscoe Blvd Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kathryn Erhahon-Ilen-Otuma, FNPFamily Nurse Practitioner1770209025
- Arthur Gordon, MDInternal Medicine Physician1659431120
- Norinda Kremicki, NPFamily Nurse Practitioner1780645077
Verify Sharon Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A197172Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,463 Medicare Part D claims for 319 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 178 claims were for opioids.
Most prescribed
- Lisinopril106 claims
- Atorvastatin Calcium93 claims
- Amlodipine Besylate88 claims
- Levothyroxine Sodium81 claims
- Hydrocodone-Acetaminophen75 claims
- Omeprazole73 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.
Bills Medicare through one group practice
- Healthcare Partners Affiliates Medical GroupWest Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sharon Grewal among 17,696 internal medicine physician records in California
Sharon Grewal, MD 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 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · 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).
38 internal medicine physician records list a practice address in Northridge
They are 38 of the 2,598 NPPES records with a practice address in Northridge, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Northridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Parviz Amini, MDNorthridge, CA 913241942230495
- Gurleen Bhasin, MDNorthridge, CA 913241821404096
- Darin Buschmann, M.D.Northridge, CA 913241558381004
- Alan Darush, M.D.Northridge, CA 913241649246794
- Arthur Gordon, MDNorthridge, CA 913241659431120
- Tam Huynh, M.D.Northridge, CA 913241487802674
- Masoud Azizad, MDNorthridge, CA 913251033174826
- Christopher Buttelman, MDNorthridge, CA 913251437128840
Common questions
What is Sharon Grewal, MD's NPI number?
Sharon Grewal, MD's National Provider Identifier (NPI) is 1831719624, issued on Apr 21, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Sharon Grewal, MD located?
The NPPES record lists a practice address at 18546 Roscoe Blvd Ste 300, Northridge, CA, 91324. Phone: (818) 886-4028. Providers update this record themselves, so call before visiting.
How can I verify Sharon Grewal, MD's license?
NPPES lists California license number A197172, 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 Sharon Grewal, MD prescribe under Medicare Part D?
In 2024, Sharon Grewal, MD had 2,463 Medicare Part D claims for 319 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.