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Internal Medicine

Nils P. Gaddis, DO

Works at hospitals in Maryville, TN · Tennessee

Summary

Dr. Nils P. Gaddis, DO is an internal medicine doctor at 220 Associates Blvd, Alcoa, TN 37701. Phone: (865) 238-6400. Accepts Medicare assignment. In 2024, Nils P. Gaddis had 188 Original Medicare patients and 1,321 services. NPI 1447337696. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 220 Associates Blvd, Alcoa, TN 37701 · Directions (6 more locations)
  • Phone: (865) 238‑6400
  • Medicare: Accepts Medicare assignment
  • Hospital: Blount Memorial Hospital
  • Group practice: Blount Memorial Physician Group Inc (+1 more)
  • Medical school: Arizona College Of Osteopathic Medicine Mid Western University · graduated 2000 (26 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Nils P. Gaddis, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Nils P. Gaddis accept Medicare assignment?
Yes. Medicare's clinician data says Nils P. Gaddis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Nils P. Gaddis see?
In 2024, CMS data shows 188 Original Medicare patients and 1,321 services for Nils P. Gaddis. This counts Original Medicare only and measures volume, not quality.
What is Nils P. Gaddis's NPI number?
1447337696. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Nils P. Gaddis, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients188
Services billed to Medicare1,321
Different services or procedures41
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)406 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)262 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)122 services
  4. Injection of drug or substance under skin or into muscle (96372)43 services
  5. Administration of influenza virus vaccine (G0008)37 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis52%
  • Ischemic heart disease39%
  • Diabetes24%
  • COPD24%

Hospitals where Nils P. Gaddis works

Medicare's Facility Affiliation Data lists Nils P. Gaddis at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Blount Memorial HospitalMaryville, TN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 440011

Practice locations

Addresses where Nils P. Gaddis is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Nils P. Gaddis as a member of these groups (CMS data updated October 2, 2026).

  • Blount Memorial Physician Group Inc252 clinicians in the group
  • Volunteer Healthcare Services, Inc.91 clinicians in the group

Specialties

Find other Internal Medicine doctors in Tennessee →

Other internal medicine doctors in Alcoa

Clinicians with the same Medicare primary specialty in Alcoa, TN — not a recommendation.

All internal medicine doctors in Alcoa →

Other clinicians in Blount Memorial Physician Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolArizona College Of Osteopathic Medicine Mid Western University
Graduation year2000 (26 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447337696
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians