Ryan S. Grover, M.D.
Radiation Oncology Physician · Crossville, TN
Ryan S. Grover, M.D. is a radiation oncology physician with a practice address in Crossville, Tennessee, and NPI 1346251287, issued on Aug 9, 2006. Check the license (Tennessee 64645, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ryan S. Grover
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 64645 TN
A81474 CA
Self-reported in NPPES; status is on the state search - Practice location
- 421 South Main Street, Crossville, TN 38555
- Phone
- (931) 456-8390
- Enumerated
- Aug 9, 2006
- Record last updated
- Nov 21, 2025
- Fax
- (931) 456-8389
- Medicaid ID
- Q071897 TN
- Medicare enrollment
- Enrolled (PECOS I20220316002597); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 132 in Tennessee → Look up another NPI →
Also registered at 421 South Main Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Allison, D.O.Anesthesiology Physician1104814797
- Amanda Halford, MDInternal Medicine Physician1396868170
- Wesley Halford, MDInternal Medicine Physician1699896886
Verify Ryan S. Grover in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 64645Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% more Medicare Part D claims than the average radiation oncology physician in 2024
265 Medicare Part D claims for 94 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefadroxil54 claims
- Lidocaine-Prilocaine49 claims
- Tamsulosin Hcl39 claims
- Dexamethasone36 claims
- Silodosin13 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 2 group practices
- East Tennessee Radiation Oncology, P.C.Crossville, TN
- Thompson Oncology GroupKnoxville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan S. Grover among 132 radiation oncology physician records in Tennessee
Ryan S. Grover, M.D. is one of 132 radiation oncology physician records with a practice address in Tennessee. 83% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2001 · median 2005 among the 98 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Tennessee
There are 132 radiation oncology physician records in Tennessee.
All 132 in Tennessee → Every provider in Crossville → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Deborah Jiang, M.D.Cookeville, TN 385011700267044
- Jonas Sidrys, M.D.Cookeville, TN 385011124068275
- Algis Sidrys, M.D.Cookeville, TN 385011104873090
- Joel Kochanski, M.D.Columbia, TN 384011982874582
- Wittaya Sattasiri, MDColumbia, TN 384011821198029
- Anastasios Georgiou, M.D.Jackson, TN 383011972603785
- Jeffrey Kovalic, M.D.Jackson, TN 383011568562379
- Kevin Collins, MDUnion City, TN 382611174611511
Common questions
What is Ryan S. Grover, M.D.'s NPI number?
Ryan S. Grover, M.D.'s National Provider Identifier (NPI) is 1346251287, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ryan S. Grover, M.D. located?
The NPPES record lists a practice address at 421 South Main Street, Crossville, TN, 38555. Phone: (931) 456-8390. Providers update this record themselves, so call before visiting.
How can I verify Ryan S. Grover, M.D.'s license?
NPPES lists Tennessee license number 64645, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan S. Grover, M.D. prescribe under Medicare Part D?
In 2024, Ryan S. Grover, M.D. had 265 Medicare Part D claims for 94 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.