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

Colleen A Hartwig, DO

Individual provider Internal Medicine Physician · NPI 1720056757

Colleen A Hartwig, DO is an Internal Medicine in Livonia, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 1995, 31 years ago. Practices with Beaumont Medical Group Hospital Based Services, a 572-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
31
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
MI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

36123 Schoolcraft Rd
Livonia, MI 48150-1216
Phone: (734) 464-0887
Fax: (734) 402-0254
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 28050 Grand River Ave, Farmington Hills, MI 48336-5919 — (947) 521-8000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 5101012752 (MI)

Record details

NPI number1720056757
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 8, 2006
Last updated in NPPESJuly 28, 2022
Certification dateJuly 28, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1995 (31 years in practice)
Group practice Beaumont Medical Group Hospital Based Services — 572 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Livonia