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

Chuck L Ball, MD

Individual provider Internal Medicine Physician · NPI 1821253535

Chuck L Ball, MD practises Internal Medicine in Fort Defiance, Arizona. Qualified in 2004, 22 years ago. Practices with The Fort Defiance Indian Hospital Board, Incorporation, a 146-clinician group and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
22
Licensed in
VA
In the registry since
2008
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

Corner Of Route N12 And N7
Fort Defiance, AZ 86504
Phone: (928) 729-8000
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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 0101250915 (VA)

Record details

NPI number1821253535
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 22, 2008
Last updated in NPPESAugust 3, 2026
Certification dateAugust 3, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice The Fort Defiance Indian Hospital Board, Incorporation — 146 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients165
Services billed 203 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.

Colleagues at The Fort Defiance Indian Hospital Board, Incorporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 146 clinicians in the practice; 12 are shown here.

Other providers in Fort Defiance