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
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
Mailing address210 E 90th Drive, Merrillville, IN 46410-8102

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