Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Nicholas Maximillian Kielhorn, MD

Individual provider Family Medicine Physician · NPI 1821240128

Dr. Nicholas Maximillian Kielhorn, MD is registered under Family Practice in Jackson, Michigan. Qualified in 2007, 19 years ago. Practices with Careline Poh100 LLC, a 7-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
19
Licensed in
MI
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

801 Rosehill Rd
Jackson, MI 49202-1762
Phone: (517) 212-2008
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 4301090658 (MI)

Record details

NPI number1821240128
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 17, 2008
Last updated in NPPESNovember 15, 2023
Certification dateNovember 15, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Careline Poh100 Llc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients574
Services billed 886 a service is one billed item, such as a visit, a test or a procedure
Average patient age83

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $131 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Henry Ford Allegiance Health Hospital · Jackson, MI · listed as Allegiance Health
  • Mymichigan Medical Center Midland Hospital · Midland, MI
  • Spectrum Health Hospital · Grand Rapids, MI · listed as Spectrum Health Hospital
  • Americans Home Health Care Home health agency · Saginaw, MI · listed as Americans Home Health Care Inc
  • Americans Hospice Care, Inc Hospice · Saginaw, MI · listed as Americans Hospice Care Inc
  • Mission Point Health Campus of Jackson Nursing home · Jackson, MI · listed as Mission Point Health Campus of Jackson LLC
  • Optalis Health and Rehabilitation of Grand Rapids Nursing home · Grand Rapids, MI · listed as Optalis Grand Rapids Opco LLC
  • The Oaks at Jamestown Nursing home · Hudsonville, MI · listed as Trilogy Healthcare of Hudsonville, LLC
  • Vista Grande Villa Nursing home · Jackson, MI
  • Promedica Charles And Virginia Hickman Hospital Hospital · Adrian, MI
  • Interim Healthcare Of West Michigan Home health agency · Grand Rapids, MI
  • Optimal Care Home Health Home health agency · Saginaw, MI
  • Corewell Health Hospice & Palliative Care - West Michigan Hospice · Grand Rapids, MI
  • Corsocare Hospice Hospice · Milford, MI
  • Gentiva I Hospice · Grand Rapids, MI
  • Interim Healthcare Of West Michigan Hospice · Grand Rapids, MI
  • Resthaven Care Center Nursing home · Holland, MI

Colleagues at Careline Poh100 LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Jackson