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

William J Ennis, DO

Individual provider Family Medicine Physician · NPI 1649225988

William J Ennis, DO is a Family Practice in Chicago, Illinois. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 1985, 41 years ago. Practices with The Board of Trustees of the University of Illinois, a 1,142-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
41
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
IL
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1801 W Taylor St
Chicago, IL 60612
Phone: (312) 996-3253
Fax: (312) 413-0495
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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 036084083 (IL)

Record details

NPI number1649225988
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 24, 2006
Last updated in NPPESJune 16, 2018

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesVASCULAR SURGERY
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 1985 (41 years in practice)
Group practice The Board Of Trustees Of The University Of Illinois — 1142 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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