Prabhsharn Singh Grewal, MD
Internal Medicine Physician · Oregon, OH
Prabhsharn Singh Grewal, MD is an internal medicine physician with a practice address in Oregon, Ohio, and NPI 1588232961, issued on Jun 14, 2021. Check the license (Ohio 35150910, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Prabhsharn Singh Grewal
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35150910 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3841 Navarre Ave, Oregon, OH 43616
- Phone
- (419) 691-8132
- Enumerated
- Jun 14, 2021
- Record last updated
- May 3, 2024
- Fax
- (419) 691-2061
- Medicare enrollment
- Enrolled (PECOS I20240615000365); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 3841 Navarre Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kanika Ahuja, M.D.Internal Medicine Physician1124415781
- Marianne Borkosky, CNPFamily Nurse Practitioner1932450392
- Nicklaus Carrothers, M.D.Internal Medicine Physician1174268130
- Riaz Chaudhary, M.D.Geriatric Medicine (Internal Medicine) Physician1912904236
- Puneet Chopra, M.D.Internal Medicine Physician1508200668
- Vallabh Dogra, M.D.Internal Medicine Physician1710624036
Verify Prabhsharn Singh Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35150910Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,491 Medicare Part D claims for 404 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 35 claims were for opioids.
Most prescribed
- Atorvastatin Calcium82 claims
- Amlodipine Besylate71 claims
- Gabapentin50 claims
- Furosemide46 claims
- Lisinopril46 claims
- Levothyroxine Sodium40 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: $16.49
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. 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
- Mercy Health Physicians-North LLCOregon, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
11 internal medicine physician records list a practice address in Oregon
They are 11 of the 519 NPPES records with a practice address in Oregon, and 5,277 internal medicine physician records in Ohio.
All 11 in Oregon → All 5,277 in Ohio → Every provider in Oregon →
Other internal medicine physician records in Ohio
- Evan Abalos, D.O.Toledo, OH1194163089
- Susan Abbott, MDCincinnati, OH1568414290
- Walid Abboud, MDCleveland, OH1245295559
- Joelle Abdallah, MDColumbus, OH1912577651
- Mandi Abdel Ahad, DOCleveland, OH1235870551
- Saaid Abdel-Ghani, M.D.Columbus, OH1598926529
- Bahaa Abdelghaffar, MDCleveland, OH1265954275
- John Abdelnour, MDCleveland, OH1114656931
- Ahmad Abdelrahman, MDToledo, OH1134859192
- Nawal Abdi, MDCleveland, OH1154002582
Common questions
What is Prabhsharn Singh Grewal, MD's NPI number?
Prabhsharn Singh Grewal, MD's National Provider Identifier (NPI) is 1588232961, issued on Jun 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Prabhsharn Singh Grewal, MD located?
The NPPES record lists a practice address at 3841 Navarre Ave, Oregon, OH, 43616. Phone: (419) 691-8132. Providers update this record themselves, so call before visiting.
How can I verify Prabhsharn Singh Grewal, MD's license?
NPPES lists Ohio license number 35150910, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Prabhsharn Singh Grewal, MD prescribe under Medicare Part D?
In 2024, Prabhsharn Singh Grewal, MD had 1,491 Medicare Part D claims for 404 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.