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

Dr. James Ralph Clark, MD

Individual provider Gastroenterology Physician · NPI 1588640650

Dr. James Ralph Clark, MD is a Gastroenterology in Downers Grove, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1990, 36 years ago. Practices with Gi Partners of Illinois PLLC, a 38-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
36
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2005
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

3825 Highland Ave Tower 2 - Ste 302
Downers Grove, IL 60515-1552
Phone: (630) 434-9312
Fax: (630) 434-9360
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X (IL)

Record details

NPI number1588640650
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 20, 2005
Last updated in NPPESJuly 8, 2007
Mailing address3825 Highland Ave, Tower 2 - Suite 302, Downers Grove, IL 60515-1552

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1990 (36 years in practice)
Group practice Gi Partners Of Illinois Pllc — 38 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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