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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN P WILLIAMS MD
NPI 1659341832
Radiology - Pediatric Radiology in Knoxville, TN

Active since January 23, 2006PECOS Enrolled
98.98/100
CMS Quality Rating
2001 LAUREL AVE, SUITE N304, KNOXVILLE, TN 37916(865) 546-9484 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About John P Williams Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN P WILLIAMS MD (NPI 1659341832) is an individual pediatric radiology provider in Knoxville, Tennessee, licensed in Tennessee (MD28001) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659341832
Entity TypeIndividualMale
Primary Taxonomy2085P0229X
Provider Legal NameJOHN P WILLIAMSCredential: MD
Location Address2001 LAUREL AVE, SUITE N304Knoxville, TN 37916-1810
Mailing Address2001 Laurel Ave, Suite N304Knoxville, TN 37916-1810 · (865) 546-9484
Phone(865) 546-9484
Sole ProprietorNo
Enumeration DateJanuary 23, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1659341832 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Pediatric RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085P0229X
License✔ Licensed in TN · MD28001
Definition
A radiologist who is proficient in all forms of diagnostic imaging as it pertains to the treatment of diseases in the newborn, infant, child and adolescent. This specialist has knowledge of both imaging and interventional procedures related to the care and management of diseases of children. A pediatric radiologist must be highly knowledgeable of all organ systems as they relate to growth and development, congenital malformations, diseases peculiar to infants and children and diseases that begin in childhood but cause substantial residual impairment in adulthood.
2001 LAUREL AVE, Knoxville, TN 37916
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Other Identifiers 1

Medicaid3372353TN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John P Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Screening 3d breast mammography 77063
Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.
135 services135 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
134 services134 patients
X-ray of chest, 2 views 71046
A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.
55 services54 patients
Dxa bone density measurement of hip, pelvis, spine 77080
A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.
35 services35 patients
Ultrasound study of one arm or leg veins with compression and maneuvers 93971
This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.
18 services17 patients
Limited ultrasound scan of 1 breast 76642
A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.
16 services16 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.98/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality98.8
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SCOTT A WEGRYN MD
Radiology (Vascular & Interventional Radiology)
2001 LAUREL AVE, SUITE N304
KNOXVILLE, TN 37916
Knox County (865) 546-9484
SAMUEL H FEASTER MD
Radiology (Neuroradiology)
2001 LAUREL AVE, SUITE N304
KNOXVILLE, TN 37916
Knox County (865) 546-9484
DR. SUNG YONG BAE M.D.
Internal Medicine
2001 LAUREL AVE, SUITE 206
KNOXVILLE, TN 37916
Knox County (865) 524-3131
DR. VIJAY R. PATIL M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2001 LAUREL AVE, SUITE 201
KNOXVILLE, TN 37916
Knox County (865) 522-3355
DR. WILLIAM L. JOHNSON MD
Orthopaedic Surgery
2001 LAUREL AVE, SUITE 402 NEWLAND PROFESSIONAL BLDG.
KNOXVILLE, TN 37916
Knox County (865) 632-5577
EAST TENNESSEE NEPHROLOGY PC
Internal Medicine (Nephrology)
2001 LAUREL AVE, STE 206
KNOXVILLE, TN 37916
Knox County (865) 524-3131
HEJUNG KIM MD
Radiology (Nuclear Radiology)
2001 LAUREL AVE, SUITE N304
KNOXVILLE, TN 37916
Knox County (865) 766-6870
MAUREEN THERESA CADMUS MSN APN RN
Nurse Practitioner
2001 LAUREL AVE, STE 204
KNOXVILLE, TN 37916
Knox County (865) 673-0288

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Williams's NPI number?

The NPI number for John Williams is 1659341832. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Where is John Williams located?

John Williams practices at 2001 Laurel Ave Suite N304, Knoxville, TN 37916. The listed phone number is (865) 546-9484.

What is John Williams's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Pediatric Radiology, with taxonomy code 2085P0229X.

Is John Williams enrolled in Medicare?

Yes. John Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Williams was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.