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CHARLES N CLARK MD
NPI 1396772828
Internal Medicine in Knoxville, TN

Active since June 28, 2006PECOS Enrolled
10215 KINGSTON PIKE, SUITE 100, KNOXVILLE, TN 37922(865) 691-0733 Get Directions Write a Review

NPPES record last updated: April 30, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Charles N Clark Md NPPES

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

CHARLES N CLARK MD (NPI 1396772828) is an individual internal medicine provider in Knoxville, Tennessee, licensed in Tennessee (29550) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396772828
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameCHARLES N CLARKCredential: MD
Location Address10215 KINGSTON PIKE, SUITE 100Knoxville, TN 37922-3222
Mailing Address1225 E Weisgarber Rd, Suite 200Knoxville, TN 37909-2604 · (865) 584-4747
Phone(865) 691-0733
Sole ProprietorNo
Enumeration DateJune 28, 2006
Last NPPES UpdateApril 30, 2008
✔ NPI 1396772828 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TN · 29550
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
10215 KINGSTON PIKE, Knoxville, TN 37922
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Other Identifiers 5

Medicare UPING64869
Medicare ID-Type Unspecified3706635TN · Legacy Group
Medicare ID-Type Unspecified3820979TN · Legacy Pin
Other080064805TN · Rr Medicare Pin
Medicaid3820979TN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Charles N Clark 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.

Medicare Billing Reassignment

Medicare enrollment records show Charles Clark reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Summit Medical Group, PLLC
0.1 mi
Internal Medicine
10215 KINGSTON PIKE, SUITE 100
Knoxville, TN 37922
  • Reassigned Medicare billing, Tennessee enrollment
  • 1,003 clinicians in this Medicare group
NPI 1215016506 (865) 691-0733

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37922 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
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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 9

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

SUMMIT MEDICAL GROUP, PLLC
Internal Medicine
10215 KINGSTON PIKE, SUITE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
MRS. AMANDA BAILEY PARKS FNP
Nurse Practitioner (Family)
10215 KINGSTON PIKE, SUITE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
JOHN M PIERCE MD
Internal Medicine
10215 KINGSTON PIKE, STE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
JORDANN BURNS LEWIS PA-C
Physician Assistant (Medical)
10215 KINGSTON PIKE, SUITE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
REBECCA T JACKSON MD
Internal Medicine
10215 KINGSTON PIKE, STE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
WALKER EUGENE NOWELL DO
Internal Medicine
10215 KINGSTON PIKE, STE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
NATALIE JUDY PA-C
Physician Assistant (Medical)
10215 KINGSTON PIKE, SUITE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733
CARABETH WEST RUSSELL M.D.
Internal Medicine
10215 KINGSTON PIKE, SUITE 100
KNOXVILLE, TN 37922
Knox County (865) 691-0733

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 Charles Clark's NPI number?

The NPI number for Charles Clark is 1396772828. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Where is Charles Clark located?

Charles Clark practices at 10215 Kingston Pike Suite 100, Knoxville, TN 37922. The listed phone number is (865) 691-0733.

What is Charles Clark's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Charles Clark enrolled in Medicare?

Yes. Charles Clark is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Charles Clark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Clark reassigns Medicare benefits to Summit Medical Group, PLLC (Knoxville, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charles Clark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Charles Clark was last updated on April 30, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.