WILLIAM HENRY ST. CLAIR MD
NPI 1285652537
Radiology - Therapeutic Radiology in Lexington, KY

Q: What is William St. Clair's NPI number?

The NPI number for William St. Clair is 1285652537. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Q: What is William St. Clair's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Therapeutic Radiology, with taxonomy code 2085R0203X.

Q: When was this NPI record last updated?

The NPPES record for William St. Clair was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.

Active since July 17, 2006PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

800 ROSE ST, LEXINGTON, KY 40536(859) 323-6486 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About William Henry St. Clair Md NPPES

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

WILLIAM HENRY ST. CLAIR MD (NPI 1285652537) is an individual therapeutic radiology provider in Lexington, Kentucky, licensed in Kentucky (35645) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Kentucky Hospital, and is a graduate of University Of Kentucky College Of Medicine (1995).

NPPES Registry Identity

NPI1285652537

Entity TypeIndividualMale

Primary Taxonomy2085R0203X

Provider Legal NameWILLIAM HENRY ST. CLAIRCredential: MD

Location Address800 ROSE STLexington, KY 40536-0001

Mailing Address138 Leader AveLexington, KY 40508-3215 · (859) 257-7910 · Fax (859) 257-7899

Phone(859) 323-6486

Sole ProprietorNo

Medical School CMSUniversity Of Kentucky College Of MedicineGraduated 1995

Enumeration DateJuly 17, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1285652537 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Therapeutic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0203X

License✔ Licensed in KY · 35645

Definition

Therapeutic Radiology certificate name was changed to Radiation Oncology. Use Radiation Oncology.

Also ListedRadiology · Radiation OncologyTaxonomy 2085R0001X · License 35645 (KY)

800 ROSE ST, Lexington, KY 40536

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Other Identifiers 1

Medicaid64014053KY

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Home State Health, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Henry St. Clair Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6507759511

PECOS Enrollment IDI20040204000465

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 18

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

431 services76 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

178 services71 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

131 services94 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

106 services50 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy G6002

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

92 services20 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

88 services41 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

81 services76 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

75 services58 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

57 services57 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

47 services44 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

46 services44 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

30 services27 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

30 services28 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

23 services21 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

21 services18 patients

Management of cranial lesion surgery using radiation over multiple sessions 77435

This procedure involves using targeted radiation to treat a lesion in the brain over several sessions. The radiation destroys the abnormal cells, helping to control or eliminate the lesion. It's a non-invasive treatment, meaning no surgical cuts are made.

21 services21 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

12 services12 patients

Management of complete single session course of cranial lesion surgery using radiation 77432

This procedure involves using radiation to treat a cranial lesion in one session. A precise dose of radiation targets the lesion, destroying abnormal cells while sparing healthy tissue. It's a non-invasive method, meaning no surgical incision is needed.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Kentucky Hospital

Acute Care Hospitals · Lexington, KY

3/5 CMS rating

OwnershipGovernment - State

CMS Certification Number180067

Location800 Rose StreetLexington, KY 40536 · Fayette County

Emergency services Birthing friendly

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.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Promoting Interoperability

100

Improvement Activities

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.

DR. JEREMY WAYNE THACKER M.D.

Radiology (Diagnostic Radiology)

800 ROSE ST, HX-302 UKMC
LEXINGTON, KY 40536

Fayette County (859) 257-4457

DR. KIRK PHILLIP HEITMAN M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

800 ROSE ST, MS117
LEXINGTON, KY 40536

Fayette County (859) 257-1446

HARISH RAM MD

Anesthesiology

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 323-5956

MS. YVONNE P RICE APRN NP-C

Nurse Practitioner (Family)

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 218-1779

VANESSA D. SMITH MD

Pathology (Anatomic Pathology)

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 323-6183

JASMINE HOWARD APRN

Nurse Practitioner (Acute Care)

800 ROSE ST, MN604
LEXINGTON, KY 40536

Fayette County (859) 323-6047

MITCHELL ALEXANDER MIGUEL M.D.

Hospitalist

800 ROSE ST
LEXINGTON, KY 40536

Fayette County (859) 323-6047

LEAH RAY YEAGER APRN

Nurse Practitioner (Family)

800 ROSE ST, CC417
LEXINGTON, KY 40536

Fayette County (859) 257-1223

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 William St. Clair's NPI number?

The NPI number for William St. Clair is 1285652537. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is William St. Clair located?

William St. Clair practices at 800 Rose St, Lexington, KY 40536. The listed phone number is (859) 323-6486.

What is William St. Clair's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Therapeutic Radiology, with taxonomy code 2085R0203X.

Is William St. Clair enrolled in Medicare?

Yes. William St. Clair is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William St. Clair accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Home State Health and Ambetter of Tennessee list William St. Clair as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William St. Clair affiliated with any hospitals?

According to CMS data, William St. Clair is affiliated with University Of Kentucky Hospital.

When was this NPI record last updated?

The NPPES record for William St. Clair was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.