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

Roger G Peck, MD

Individual provider Internal Medicine Physician · NPI 1972570331

Roger G Peck, MD practises Internal Medicine in Manhattan, Kansas. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 1981, 45 years ago. Practices with Cotton-O'Neil Clinic Revocable Trust, a 658-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Kansas.

Years since qualifying
45
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
KS
In the registry since
2006
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

1325 Research Park Dr
Manhattan, KS 66502-5000
Phone: (785) 537-2651
Fax: (785) 270-4347
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 04-20773 (KS)

Record details

NPI number1972570331
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 3, 2006
Last updated in NPPESDecember 31, 2025
Certification dateDecember 31, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 1981 (45 years in practice)
Group practice Cotton-O'Neil Clinic Revocable Trust — 658 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients377
Services billed 3,930 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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. Those with a page here are linked.

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 Manhattan