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

William John Pierce, MD

Individual provider Family Medicine Physician · NPI 1497838593

William John Pierce, MD is a Family Practice in Merrillville, Indiana. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1970, 56 years ago. Accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
56
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IN
In the registry since
2006
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

210 E 90th Dr
Merrillville, IN 46410-8102 Not confirmed with CMS for 18 years — call before visiting
Phone: (219) 738-2008
Fax: (219) 738-2127
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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 01025010 (IN)

Record details

NPI number1497838593
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 23, 2006
Last updated in NPPESJuly 21, 2008

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1970 (56 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Merrillville