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Dermatology

Jona K. Gill, MD

Works at hospitals in Chelsea, MI · Ann Arbor, MI · Michigan

Summary

Dr. Jona K. Gill, MD is a dermatologist at 14650 E Old US Hwy 12, Suite 308, Chelsea, MI 48118. Phone: (734) 475-3221. Accepts Medicare assignment. In 2024, Jona K. Gill had 475 Original Medicare patients and 2,047 services. NPI 1184682510. 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: Dermatologist (Medicare lists Dermatology)
  • Address: 14650 E Old US Hwy 12, Suite 308, Chelsea, MI 48118 · Directions
  • Phone: (734) 475‑3221
  • Medicare: Accepts Medicare assignment
  • Hospitals: Chelsea Hospital, Trinity Health Ann Arbor Hospital
  • Group practice: Jona K Gill MD PC
  • Medical school: Ohio State University College Of Medicine · graduated 1997 (29 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Jona K. Gill, 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 Jona K. Gill accept Medicare assignment?
Yes. Medicare's clinician data says Jona K. Gill 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 Jona K. Gill see?
In 2024, CMS data shows 475 Original Medicare patients and 2,047 services for Jona K. Gill. This counts Original Medicare only and measures volume, not quality.
What is Jona K. Gill's NPI number?
1184682510. 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 Jona K. Gill, 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 patients475
Services billed to Medicare2,047
Different services or procedures57
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Destruction of precancer skin growth, 2-14 growths (17003)572 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)293 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)219 services
  4. Destruction of precancer skin growth, 1 growth (17000)218 services
  5. Biopsy of related skin growth, first growth (11102)102 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 pressure67%
  • Arthritis45%
  • Osteoporosis20%
  • Ischemic heart disease19%
  • Anxiety18%

Hospitals where Jona K. Gill works

Medicare's Facility Affiliation Data lists Jona K. Gill 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.

  • Chelsea HospitalChelsea, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230259
  • Trinity Health Ann Arbor HospitalAnn Arbor, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230156

Practice locations

Addresses where Jona K. Gill is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jona K. Gill as a member of this group (CMS data updated October 2, 2026).

  • Jona K Gill MD PC4 clinicians in the group

Specialties

Find other Dermatology doctors in Michigan →

Other dermatologists in Chelsea

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

All dermatologists in Chelsea →

Other clinicians in Jona K Gill MD PC

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

Clinician information

CredentialMD
Medical schoolOhio State University College Of Medicine
Graduation year1997 (29 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1184682510
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