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

Dr. John Ellis Williamson Jr., DO

Individual provider Emergency Medicine Physician · NPI 1629017108

Dr. John Ellis Williamson Jr., DO is an Emergency Medicine in Morris, Illinois. Qualified in 1995, 31 years ago. Practices with Sarah Bush Lincoln Health Center, a 410-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
31
Licensed in
IL
In the registry since
2006
Specialties on file
2
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.

See every abbreviation used in this directory →

Practice location Address checks out

150 W High St
Morris, IL 60450-1463
Phone: (815) 942-2932
Show map & directions

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

Additional practice locations (4)

  • 405 W Jackson St, Carbondale, IL 62901-1462 — (618) 549-0721
  • 201 S 14th St, Herrin, IL 62948-3631 — (618) 942-2171
  • 1000 Health Center Dr, Mattoon, IL 61938-4644 — (217) 258-2551
  • 2 S Hospital Dr, Murphysboro, IL 62966-3333 — (618) 684-3156

Specialties & licences

Emergency Medical Services (Emergency Medicine) Physician (primary) Taxonomy 207PE0004X · Licence 036-109152 (IL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036109152 (IL)

Record details

NPI number1629017108
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 6, 2006
Last updated in NPPESSeptember 27, 2023
Certification dateSeptember 27, 2023
Mailing address10500 Deer Chase Ave, Orland Park, IL 60467-9013

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Sarah Bush Lincoln Health Center — 410 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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