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

Dr. Gregory C Castello, DO

Individual provider Family Medicine Physician · NPI 1417939323

Dr. Gregory C Castello, DO is a Family Practice in Lombard, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1993, 33 years ago. Works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
33
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL
In the registry since
2005
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

2 E 22nd St Ste 217
Lombard, IL 60148-6125
Phone: (630) 620-9500
Fax: (630) 620-6541
Show map & directions

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

Additional practice locations (1)

  • 2340 S Highland Ave, Lombard, IL 60148-5371 — (630) 620-9500

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036091537 (IL)

Record details

NPI number1417939323
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 16, 2005
Last updated in NPPESJanuary 28, 2026
Certification dateJanuary 28, 2026
Mailing address2 E 22nd St Ste 217, Lombard, IL 60148-6125

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1993 (33 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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