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Internal Medicine

Bernard P. Grunstra, MD

Works at hospitals in Johnson City, TN · Bristol, TN · Kingsport, TN · Tennessee

Summary

Bernard P. Grunstra, MD (Internal Medicine) is listed by Medicare at 3 hospitals in Johnson City, TN, Bristol, TN and Kingsport, TN. NPI 1558367417. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Bernard P. Grunstra, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
41Years since medical school (graduated 1985)
MaleGender (as listed)
Internal Medicine and Pediatric Assoc of BristolGroup practice

Quick answers

Which hospitals does Bernard P. Grunstra work at?
Medicare's official clinician data lists Bernard P. Grunstra at 3 hospitals: Johnson City Medical Center, Wellmont Bristol Regional Medical Center and Wellmont Holston Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Bernard P. Grunstra see patients?
Medicare's clinician data lists 1 practice location in Bristol, TN. Call before your visit to confirm the address.
What is Bernard P. Grunstra's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Pediatric Medicine.
Does Bernard P. Grunstra accept Medicare assignment?
Yes. Medicare's clinician data says Bernard P. Grunstra accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Bernard P. Grunstra?
(423) 844-6700, as listed in official Medicare / NPI Registry data.
What is Bernard P. Grunstra's NPI number?
1558367417. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Bernard P. Grunstra works

Medicare's Facility Affiliation Data lists Bernard P. Grunstra at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Bernard P. Grunstra is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Bernard P. Grunstra as a member of this group (CMS data updated 2026-10-02).

  • Internal Medicine and Pediatric Assoc of Bristol6 clinicians in the group

Specialties

Find other Internal Medicine doctors in Tennessee →

Other internal medicine doctors in Bristol

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

All internal medicine doctors in Bristol →

Clinician information

CredentialMD
Graduation year1985
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558367417
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians