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

William Ratigan Ranger, MD

Individual provider Surgery Physician · NPI 1235121989

William Ratigan Ranger, MD is a Vascular Surgery in Kalamazoo, Michigan. Graduated from University of Michigan Medical School in 1990, 36 years ago. Practices with Ascension Borgess Hospital, a 41-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
36
Trained at
University of Michigan Medical School
Licensed in
MI
In the registry since
2005
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

1815 Henson Ave
Kalamazoo, MI 49048
Phone: (269) 492-6500
Fax: (269) 492-6461
Show map & directions

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

Additional practice locations (3)

  • 205 N East Ave, Jackson, MI 49201-1753 — (517) 205-7481
  • 1225 W Front Street, Traverse City, MI 49684-2359 — (231) 360-1775
  • 1225 W Front Street, Traverse City, MI 49684-2359 — (231) 360-1775

Specialties & licences

Vascular Surgery Physician (primary) Taxonomy 2086S0129X · Licence 4301058472 (MI)
Surgery Physician Taxonomy 208600000X · Licence WR05847 (MI)

Record details

NPI number1235121989
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 18, 2005
Last updated in NPPESJanuary 31, 2023
Certification dateJanuary 31, 2023

Medicare enrollment

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

Medicare specialtyVASCULAR SURGERY
Also practisesGENERAL SURGERY, PERIPHERAL VASCULAR DISEASE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1990 (36 years in practice)
Group practice Ascension Borgess Hospital — 41 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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