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

Derek A Melby, DO

Individual provider Hospitalist Physician · NPI 1033266473

Derek A Melby, DO is an Internal Medicine in South Holland, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1995, 31 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
31
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL
In the registry since
2007
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

100 W 162nd St
South Holland, IL 60473-2003
Phone: (708) 730-2200
Fax: (708) 210-0625
Show map & directions

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

Additional practice locations (1)

  • 12251 S 80th Ave, Palos Heights, IL 60463-1256 — (708) 923-5869

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036145502 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 036145502 (IL)

Record details

NPI number1033266473
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJanuary 5, 2007
Last updated in NPPESMay 30, 2023
Certification dateSeptember 29, 2020
Mailing address29373 Network Pl, Chicago, IL 60673-1293

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1995 (31 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in South Holland