Patrick A. Williams, MD
Radiation Oncology Physician · Chattanooga, TN
Patrick A. Williams, MD is a radiation oncology physician with a practice address in Chattanooga, Tennessee, and NPI 1164828869, issued on Nov 7, 2014. Check the license (Tennessee 60122, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Patrick A. Williams
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 60122 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1635 Gunbarrel RD Ste 100, Chattanooga, TN 37421
- Phone
- (423) 778-8525
- Enumerated
- Nov 7, 2014
- Record last updated
- Mar 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (423) 778-8526
- Medicaid ID
- Q054172 TN
- Medicare enrollment
- Enrolled (PECOS I20241014003834); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 132 in Tennessee → Look up another NPI →
Also registered at 1635 Gunbarrel RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nitesh Rana, M.D.Radiation Oncology Physician1205270428
Verify Patrick A. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 60122Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average radiation oncology physician in 2024
239 Medicare Part D claims for 104 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 16 claims were for opioids.
Most prescribed
- Betamethasone Dipropionate32 claims
- Pentoxifylline32 claims
- Alprazolam13 claims
- Gabapentin13 claims
- Memantine Hcl11 claims
- Tamsulosin Hcl11 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: $34.90
2 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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 2 group practices
- Memorial Health Partners Foundation, IncRinggold, GA
- Tennessee Oncology PLLCChattanooga, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Patrick A. Williams among 132 radiation oncology physician records in Tennessee
Patrick A. Williams, MD 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 2014, is newer than 79% of them.
- NPI issued2014 · 79% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2018 · median 2005 among the 98 with a school on file
- Record last updated2020 · 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 Chattanooga → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Nitesh Rana, M.D.Chattanooga, TN 374211205270428
- Hayden Byrd, MDChattanooga, TN 374041992383335
- Ryan Cleary, M.D.Chattanooga, TN 374041609210269
- Eric Ellis, M.D.Chattanooga, TN 374041477528644
- John Fortney, M.D.Chattanooga, TN 374041215026372
- David Rice, M.D.Chattanooga, TN 374041821067430
- Marcus Wagner, M.D.Chattanooga, TN 374041770780686
- Jonathan Whaley, MDChattanooga, TN 374041669616132
Common questions
What is Patrick A. Williams, MD's NPI number?
Patrick A. Williams, MD's National Provider Identifier (NPI) is 1164828869, issued on Nov 7, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Patrick A. Williams, MD located?
The NPPES record lists a practice address at 1635 Gunbarrel RD Ste 100, Chattanooga, TN, 37421. Phone: (423) 778-8525. Providers update this record themselves, so call before visiting.
How can I verify Patrick A. Williams, MD's license?
NPPES lists Tennessee license number 60122, 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 Patrick A. Williams, MD prescribe under Medicare Part D?
In 2024, Patrick A. Williams, MD had 239 Medicare Part D claims for 104 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.