DANIEL F NIENDORFF M.D.
NPI 1700968732
Internal Medicine - Critical Care Medicine in Oak Ridge, TN

Q: What is Daniel Niendorff's NPI number?

The NPI number for Daniel Niendorff is 1700968732. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Q: What is Daniel Niendorff's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Q: When was this NPI record last updated?

The NPPES record for Daniel Niendorff was last updated on January 2, 2024. 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.

Active since October 19, 2006PECOS Enrolled

990 OAK RIDGE TPKE, OAK RIDGE, TN 37830(865) 835-1000 Get Directions Write a Review

NPPES record last updated: January 2, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 2, 2024, Dec 6, 2023 (2 updates tracked since 2023).

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About Daniel F Niendorff M.d. NPPES

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

DANIEL F NIENDORFF M.D. (NPI 1700968732) is an individual critical care medicine provider in Oak Ridge, Tennessee, licensed in Tennessee (49379) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Johnson City.

NPPES Registry Identity

NPI1700968732

Entity TypeIndividualMale

Primary Taxonomy207RC0200X

Provider Legal NameDANIEL F NIENDORFFCredential: M.D.

Location Address990 OAK RIDGE TPKEOak Ridge, TN 37830-6976

Mailing Address1021 W Oakland Ave Ste 310Johnson City, TN 37604-2192 · (423) 302-6565

Phone(865) 835-1000

Sole ProprietorNo

Enumeration DateOctober 19, 2006

Last NPPES UpdateJanuary 2, 20242 updates tracked since enumeration

NPPES CertifiedJanuary 2, 2024

✔ NPI 1700968732 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RC0200X

License✔ Licensed in TN · 49379

Definition

An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Also ListedInternal MedicineTaxonomy 207R00000X · License 49379 (TN)

990 OAK RIDGE TPKE, Oak Ridge, TN 37830

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Secondary Practice Location 1

Location 1400 N State Of Franklin Rd Rm 2746Johnson City, TN 37604-6035 · Phone (423) 431-2727

Other Identifiers 1

MedicaidQ000561TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter Health, Ambetter of Alabama and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Daniel F Niendorff 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 Reassignments

Medicare enrollment records show Daniel Niendorff reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Blue Ridge Medical Management Corporation

75 mi

Obstetrics & Gynecology

900 W MAIN ST, HEALTH LINK OF ROGERSVILLE
Rogersville, TN 37857

Reassigned Medicare billing, Tennessee enrollment
496 clinicians in this Medicare group

NPI 1134139017 (423) 272-0542

Hospital Medicine Services Of Tennessee PC

216 mi

Hospitalist

600 WILSON CREEK RD
Lawrenceburg, IN 47025

Reassigned Medicare billing, Tennessee enrollment
394 clinicians in this Medicare group

NPI 1528433802 (812) 537-1010

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 3

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.

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

85 services55 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

32 services26 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

15 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37830 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 20

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

MRS. LAUREN WALRAVEN HOWELL R.D.

Dietitian, Registered

990 OAK RIDGE TPKE, FOOD AND NUTRITION SERVICES
OAK RIDGE, TN 37830

Anderson County (865) 835-4109

CHUKWUMA UMUNAKWE M.D.

Emergency Medicine