John A. Williams, M.D.
Internal Medicine Physician · Nashville, TN
John A. Williams, M.D. is an internal medicine physician with a practice address in Nashville, Tennessee, and NPI 1538103692, issued on Jun 16, 2006. Check the license (Tennessee 23572, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John A. Williams
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 23572 TN
Self-reported in NPPES; status is on the state search - Practice location
- 300 20TH Ave N, Nashville, TN 37203
- Phone
- (615) 284-1400
- Enumerated
- Jun 16, 2006
- Record last updated
- Oct 21, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (615) 284-1349
- Medicaid ID
- 3077773 TN
- Medicare enrollment
- Enrolled (PECOS I20100121000388); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,596 in Tennessee → Look up another NPI →
Also registered at 300 20TH Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John 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 23572Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10.4 times the Medicare Part D claims of the average internal medicine physician in 2024
33,110 Medicare Part D claims for 1,643 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. 426 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,933 claims
- Amlodipine Besylate1,246 claims
- Eliquis938 claims
- Levothyroxine Sodium889 claims
- Furosemide766 claims
- Lisinopril729 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: $194.96
11 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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
- Saint Thomas Medical PartnersNashville, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John A. Williams among 2,596 internal medicine physician records in Tennessee
John A. Williams, M.D. is one of 2,596 internal medicine physician records with a practice address in Tennessee. 80% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 46% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1986 · median 2003 among the 1,705 with a school on file
- Record last updated2014 · 56% 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 Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
613 internal medicine physician records list a practice address in Nashville
They are 613 of the 24,357 NPPES records with a practice address in Nashville, and 2,596 internal medicine physician records in Tennessee.
All 2,596 in Tennessee → Every provider in Nashville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Allen, MDNashville, TN 372031316933955
- John Anderson, MDNashville, TN 372031003801788
- Deepinder Bal, MDNashville, TN 372031376538207
- Dana Bannerman, MDNashville, TN 372031649274515
- Matthew Beuter, MDNashville, TN 372031992790091
- Robert Johnson, MDNashville, TN 372031003801143
- Louis Johnson, MDNashville, TN 372031245225937
- Richard Martin, MDNashville, TN 372031225023914
Common questions
What is John A. Williams, M.D.'s NPI number?
John A. Williams, M.D.'s National Provider Identifier (NPI) is 1538103692, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John A. Williams, M.D. located?
The NPPES record lists a practice address at 300 20TH Ave N, Nashville, TN, 37203. Phone: (615) 284-1400. Providers update this record themselves, so call before visiting.
How can I verify John A. Williams, M.D.'s license?
NPPES lists Tennessee license number 23572, 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 John A. Williams, M.D. prescribe under Medicare Part D?
In 2024, John A. Williams, M.D. had 33,110 Medicare Part D claims for 1,643 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.