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DR. CHRISTEN VAVALIDES FLEMING M.D.
NPI 1982963336
Internal Medicine in Knoxville, TN

Active since May 04, 2012PECOS Enrolled
1926 ALCOA HWY STE 310, KNOXVILLE, TN 37920(865) 305-7255 Get Directions Write a Review

NPPES record last updated: June 17, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Mar 26, 2025, Nov 15, 2016 (2 updates tracked since 2016).

About Dr. Christen Vavalides Fleming M.d. NPPES

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

DR. CHRISTEN VAVALIDES FLEMING M.D. (NPI 1982963336) is an individual internal medicine provider in Knoxville, Tennessee, licensed in Tennessee (52920) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS and maintains a secondary practice location in Chattanooga.

NPPES Registry Identity

NPI1982963336
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. CHRISTEN VAVALIDES FLEMINGCredential: M.D.
Location Address1926 ALCOA HWY STE 310Knoxville, TN 37920-1554
Mailing Address1926 Alcoa Hwy Ste 310Knoxville, TN 37920-1554 · (865) 305-7255
Phone(865) 305-7255
Sole ProprietorNo
Enumeration DateMay 4, 2012
Last NPPES UpdateJune 17, 20262 updates tracked since enumeration
NPPES CertifiedJune 17, 2026
✔ NPI 1982963336 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 · 52920
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.
1926 ALCOA HWY STE 310, Knoxville, TN 37920
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Secondary Practice Location 1

Location 11067 Riverfront Pkwy Ste 201Chattanooga, TN 37402-2222 · Phone (423) 602-9530

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Christen Vavalides Fleming M.d. 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 Christen Fleming reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Health System Inc
Same address
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1926 ALCOA HWY STE F210
Knoxville, TN 37920
  • Reassigned Medicare billing, Tennessee enrollment
  • 832 clinicians in this Medicare group
NPI 1306609748 (865) 670-6754

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

Areas of Expertise CMS Part B claims

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.

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349
An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.
94 services67 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37920 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

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

MRS. JAMIE THOMAS SHARPE ANP-BC, CPNP-PC
Nurse Practitioner (Pediatrics)
1926 ALCOA HWY STE 310
KNOXVILLE, TN 37920
Knox County (865) 305-7255

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 Christen Fleming's NPI number?

The NPI number for Christen Fleming is 1982963336. It was assigned to this individual provider in the NPPES registry on May 4, 2012.

Where is Christen Fleming located?

Christen Fleming practices at 1926 Alcoa Hwy Ste 310, Knoxville, TN 37920. The listed phone number is (865) 305-7255.

What is Christen Fleming's specialty?

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

Is Christen Fleming enrolled in Medicare?

Yes. Christen Fleming is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Christen Fleming's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christen Fleming reassigns Medicare benefits to University Health System Inc (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 Christen Fleming's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Christen Fleming accept?

Health plans from Oscar Insurance Company and UnitedHealthcare list Christen Fleming 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.

When was this NPI record last updated?

The NPPES record for Christen Fleming was last updated on June 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.