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

Ronald J Oconer, DO

Individual provider Anesthesiology Physician · NPI 1649473729

Ronald J Oconer, DO is an Anesthesiology in Harvard, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 2003, 23 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois, Pennsylvania and Wisconsin.

Years since qualifying
23
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL, PA, WI
In the registry since
2007
Specialties on file
3
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

901 Grant St
Harvard, IL 60033-1821
Phone: (815) 943-8094
Fax: (815) 943-8645
Show map & directions

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

Additional practice locations (2)

  • 10400 Haligus Rd, Huntley, IL 60142-9553 — (224) 654-0000
  • 5875 E Riverside Blvd, Rockford, IL 61114-4937 — (815) 398-9491

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 036.122284 (IL)
Anesthesiology Physician Taxonomy 207L00000X · Licence 53011-21 (WI)
Anesthesiology Physician Taxonomy 207L00000X · Licence OS013538 (PA)

Record details

NPI number1649473729
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 7, 2007
Last updated in NPPESMay 6, 2026
Certification dateMay 6, 2026
Mailing address901 Grant St, Harvard, IL 60033-1821

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 2003 (23 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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