Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Gregory Chediak, MD

Individual provider Internal Medicine Physician · NPI 1902865769

Dr. Gregory Chediak, MD is a Hospitalist in Topeka, Kansas. Graduated from University of Oklahoma College of Medicine in 1989, 37 years ago. Practices with Cotton-O'Neil Clinic Revocable Trust, a 658-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Kansas.

Years since qualifying
37
Trained at
University of Oklahoma College of Medicine
Licensed in
KS
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1500 SW 10th Ave
Topeka, KS 66604-1301
Phone: (785) 354-5242
Fax: (785) 354-6349
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1102 Saint Marys Rd, Junction City, KS 66441-4139 — (785) 238-0325

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 04-26872 (KS)
Internal Medicine Physician Taxonomy 207R00000X · Licence 04-26872 (KS)

Record details

NPI number1902865769
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 21, 2006
Last updated in NPPESOctober 7, 2026
Certification dateOctober 7, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Cotton-O'Neil Clinic Revocable Trust — 658 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients344
Services billed 1,247 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Stormont Vail Hospital Hospital · Topeka, KS
  • Phoenix Home Care And Hospice Hospice · Overland Park, KS

Colleagues at Cotton-O'Neil Clinic Revocable Trust

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 658 clinicians in the practice; 12 are shown here.

Other providers in Topeka