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

Steven L Posar, MD

Individual provider Internal Medicine Physician · NPI 1154308575

Steven L Posar, MD is an Internal Medicine in Crown Point, Indiana. Graduated from University of Michigan Medical School in 1974, 52 years ago. Practices with Guidestar Eldercare - PA, a 6-clinician group, works from 10 locations and accepts Medicare assignment. Licensed in Illinois, Indiana, Kansas and Kentucky and 5 more.

Years since qualifying
52
Trained at
University of Michigan Medical School
Licensed in
IL, IN, KS, KY, MI, MO
In the registry since
2005
Specialties on file
9
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2100 N Main St Ste 304
Crown Point, IN 46307-1877
Phone: (574) 546-1900
Fax: (574) 546-1999
Show map & directions

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

Additional practice locations (9)

  • 1821 Walden Office Sq Ste 400, Schaumburg, IL 60173-4273 — (574) 546-1900
  • 12345 W 95th St Fl 2, Lenexa, KS 66215-3853 — (574) 546-1900
  • 306 W Main St Ste 512, Frankfort, KY 40601-1840 — (574) 546-1900
  • 40600 Ann Arbor Rd E Ste 201, Plymouth, MI 48170-4675 — (574) 546-1900
  • 303 N Stadium Blvd Fl 2, Columbia, MO 65203-1493 — (574) 546-1900
  • 21 E State St, Columbus, OH 43215-4281 — (574) 546-1900
  • 311 E Pleasant Valley Blvd, Altoona, PA 16602-5512 — (574) 546-1900
  • 6000 Poplar Ave Ste 250, Memphis, TN 38119-3974 — (574) 546-1900
  • 675 Town Square Blvd Ste 200, Garland, TX 75040-2991 — (574) 546-1900

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 01046045A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35.138677 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 04-50653 (KS)
Internal Medicine Physician Taxonomy 207R00000X · Licence 52736 (KY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2025044479 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301036005 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036150622 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD488690C (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence T2472 (TX)

Record details

NPI number1154308575
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 28, 2005
Last updated in NPPESApril 7, 2026
Certification dateApril 7, 2026
Mailing addressPo Box 10299, Fort Wayne, IN 46851-0299

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1974 (52 years in practice)
Group practice Guidestar Eldercare - Pa — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Crown Point