John B. Williams, MD
Endocrinology, Diabetes & Metabolism Physician · Knoxville, TN
John B. Williams, MD is an endocrinology, diabetes & metabolism physician with a practice address in Knoxville, Tennessee, and NPI 1982605598, issued on Aug 4, 2005. Check the license (Tennessee 24814, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John B. Williams
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 24814 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1450 Dowell Springs Blvd, Knoxville, TN 37909
- Phone
- (865) 637-8812
- Enumerated
- Aug 4, 2005
- Record last updated
- May 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (865) 637-8865
- Medicaid ID
- Q017046 TN
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 148 in Tennessee → Look up another NPI →
Also registered at 1450 Dowell Springs Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gina Bearden, FNPNurse Practitioner1689774291
- Peter Campbell, MDEndocrinology, Diabetes & Metabolism Physician1386640647
- Rebecca Dade, FNPNurse Practitioner1891110805
- Thomas Doty, MDEndocrinology, Diabetes & Metabolism Physician1730184540
- Jennifer Goins, FNPNurse Practitioner1962989772
- Dee Hall, FNPNurse Practitioner1205083854
Verify John B. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 24814Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,781 Medicare Part D claims for 407 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Levothyroxine Sodium663 claims
- Synthroid198 claims
- Methimazole165 claims
- Ozempic76 claims
- Glimepiride71 claims
- Metformin Hcl60 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: $342.53
18 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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.
John B. Williams among 148 endocrinology, diabetes & metabolism physician records in Tennessee
John B. Williams, MD is one of 148 endocrinology, diabetes & metabolism physician records with a practice address in Tennessee. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Tennessee
There are 148 endocrinology, diabetes & metabolism physician records in Tennessee.
All 148 in Tennessee → Every provider in Knoxville → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Peter Campbell, MDKnoxville, TN 379091386640647
- Thomas Doty, MDKnoxville, TN 379091730184540
- Robert GeierKnoxville, TN 379091336673102
- David Irizarry, MDKnoxville, TN 379091518282839
- Bill Law, MDKnoxville, TN 379091720084825
- Daniel McCammon, MDKnoxville, TN 379091073518890
- Linda Meyers, MDKnoxville, TN 379091831397793
- Gregory Moffitt, MDKnoxville, TN 379091962403675
Common questions
What is John B. Williams, MD's NPI number?
John B. Williams, MD's National Provider Identifier (NPI) is 1982605598, issued on Aug 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John B. Williams, MD located?
The NPPES record lists a practice address at 1450 Dowell Springs Blvd, Knoxville, TN, 37909. Phone: (865) 637-8812. Providers update this record themselves, so call before visiting.
How can I verify John B. Williams, MD's license?
NPPES lists Tennessee license number 24814, 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 B. Williams, MD prescribe under Medicare Part D?
In 2024, John B. Williams, MD had 2,781 Medicare Part D claims for 407 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.