DR. WILLIAM THOMAS CLARKE MD
NPI 1477996650
Internal Medicine - Gastroenterology in Durham, NC

Active since April 08, 2013PECOS EnrolledAccepts Medicare Assignment
40 MEDICINE CIRCLE, DURHAM, NC 27710(919) 684-6437(919) 681-8147 Get Directions Write a Review

NPPES record last updated: December 5, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 5, 2023, Nov 24, 2020, Aug 13, 2019 (3 updates tracked since 2019).

About Dr. William Thomas Clarke Md NPPES

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

DR. WILLIAM THOMAS CLARKE MD (NPI 1477996650) is an individual gastroenterology provider in Durham, North Carolina, licensed in Massachusetts (266026) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of Yale University School Of Medicine (2013).

NPPES Registry Identity

NPI1477996650
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. WILLIAM THOMAS CLARKECredential: MD
Location Address40 MEDICINE CIRCLEDurham, NC 27710-5400
Mailing Address40 Medicine CircleDurham, NC 27710-0001 · (919) 684-6437 · Fax (919) 681-8147
Fax(919) 681-8147
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 2013
Enumeration DateApril 8, 2013
Last NPPES UpdateDecember 5, 20233 updates tracked since enumeration
NPPES CertifiedDecember 5, 2023
NPI 1477996650 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in MA · 266026
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
40 MEDICINE CIRCLE, Durham, NC 27710

Accepted 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

Dr. William Thomas Clarke 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 ID3779847272
PECOS Enrollment IDI20210120002152
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 2

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.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
45 services44 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
13 services13 patients

Hospital Affiliations CMS Care Compare

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

Duke University Hospital

Acute Care Hospitals · Durham, NC
5/5 CMS rating
OwnershipProprietary
CMS Certification Number340030
Location2100 Erwin RdDurham, NC 27705 · Durham County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27710 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$125.01 typical visit price
range $54.12 – $165.09
Typical copayment $31.25 (range $13.53 – $41.27)
Most-billed visit code 99204
Established Patient
$95.94 typical visit price
range $17.21 – $134.61
Typical copayment $23.98 (range $4.30 – $33.65)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Nurse Practitioner (Family)
40 MEDICINE CIRCLE, CLINIC 1L
DURHAM, NC 27710
Internal Medicine (Gastroenterology)
40 MEDICINE CIRCLE
DURHAM, NC 27710
Physician Assistant
40 MEDICINE CIRCLE
DURHAM, NC 27710
Psychiatry & Neurology (Neurology)
40 MEDICINE CIRCLE
DURHAM, NC 27710
Speech-Language Pathologist
40 MEDICINE CIRCLE
DURHAM, NC 27710
Neurological Surgery
40 MEDICINE CIRCLE
DURHAM, NC 27710
Psychiatry & Neurology (Neurology)
40 MEDICINE CIRCLE
DURHAM, NC 27710
Speech-Language Pathologist
40 MEDICINE CIRCLE
DURHAM, NC 27710

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 Clarke's NPI number?

The NPI number for William Clarke is 1477996650. It was assigned to this individual provider in the NPPES registry on April 8, 2013.

Where is William Clarke located?

William Clarke practices at 40 Medicine Circle, Durham, NC 27710. The listed phone number is (919) 684-6437.

What is William Clarke's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is William Clarke enrolled in Medicare?

Yes. William Clarke 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 Clarke accept?

Health plans from Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Blue Cross and Blue Shield of NC list William Clarke 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 Clarke affiliated with any hospitals?

According to CMS data, William Clarke is affiliated with Duke University Hospital.

When was this NPI record last updated?

The NPPES record for William Clarke was last updated on December 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.