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

John D Gardner, MD

Individual provider Rheumatology Physician · NPI 1265444368

John D Gardner, MD practises Rheumatology in Topeka, Kansas. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 1976, 50 years ago. Practices with Cotton-O'Neil Clinic Revocable Trust, a 658-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Kansas.

Years since qualifying
50
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

901 SW Garfield Ave
Topeka, KS 66606-1670
Phone: (785) 354-9591
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1500 Sw 10th Ave, Topeka, KS 66604-1301 — (785) 354-6000

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 04-17995 (KS)

Record details

NPI number1265444368
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 13, 2006
Last updated in NPPESNovember 11, 2025
Certification dateNovember 11, 2025

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 1976 (50 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 patients1,587
Services billed 3,928 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Topeka