Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Timothy Mahon, MD

Individual provider Emergency Medicine Physician · NPI 1194012807

Timothy Mahon, MD practises Emergency Medicine in Lansing, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 2011, 15 years ago. Practices with McLaren Hospital Group, a 358-clinician group and accepts Medicare assignment. Licensed in Louisiana and Michigan.

Years since qualifying
15
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
LA, MI
In the registry since
2011
Specialties on file
2
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

1215 E Michigan Ave
Lansing, MI 48912-1811 Not confirmed with CMS for 10 years — call before visiting
Phone: (517) 364-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 4301099350 (MI)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD.207280 (LA)

Record details

NPI number1194012807
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 1, 2011
Last updated in NPPESFebruary 16, 2016

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesFAMILY PRACTICE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2011 (15 years in practice)
Group practice McLaren Hospital Group — 358 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients241
Services billed 334 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at McLaren Hospital Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 358 clinicians in the practice; 12 are shown here.

Other providers in Lansing