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Family Practice

Jeffrey S. Karr, MD

Works at hospitals in Ishpeming, MI · Marquette, MI · Michigan

Summary

Dr. Jeffrey S. Karr, MD is a family doctor at 1030 Cornerstone Dr, Marquette, MI 49855. Phone: (906) 225-7120. Accepts Medicare assignment. In 2024, Jeffrey S. Karr had 175 Original Medicare patients and 1,676 services. NPI 1356402762. 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: Family doctor (Medicare lists Family Practice)
  • Address: 1030 Cornerstone Dr, Marquette, MI 49855 · Directions
  • Phone: (906) 225‑7120
  • Medicare: Accepts Medicare assignment
  • Hospitals: Bell Hospital, Uphs Marquette DLP Hospital
  • Medical school: Wayne State University School Of Medicine · graduated 1994 (32 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Jeffrey S. Karr, 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 Jeffrey S. Karr accept Medicare assignment?
Yes. Medicare's clinician data says Jeffrey S. Karr 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 Jeffrey S. Karr see?
In 2024, CMS data shows 175 Original Medicare patients and 1,676 services for Jeffrey S. Karr. This counts Original Medicare only and measures volume, not quality.
What is Jeffrey S. Karr's NPI number?
1356402762. 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 Jeffrey S. Karr, 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 patients175
Services billed to Medicare1,676
Different services or procedures49
Participating Medicare providerYes
Average age of these patients71

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)464 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)257 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)216 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)72 services
  5. Annual alcohol misuse screening, 5 to 15 minutes (G0442)71 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 cholesterol73%
  • High blood pressure71%
  • Arthritis34%
  • Diabetes25%
  • Anxiety23%
  • Ischemic heart disease21%

Hospitals where Jeffrey S. Karr works

Medicare's Facility Affiliation Data lists Jeffrey S. Karr 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.

  • Bell HospitalIshpeming, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231321
  • Uphs Marquette DLP HospitalMarquette, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230054

Practice locations

Addresses where Jeffrey S. Karr is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Family Practice doctors in Michigan →

Other family doctors in Marquette

Clinicians with the same Medicare primary specialty in Marquette, MI — not a recommendation.

All family doctors in Marquette →

Clinician information

CredentialMD
Medical schoolWayne State University School Of Medicine
Graduation year1994 (32 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1356402762
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