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

Dr. Daniel A Graybill, MD

Individual provider Internal Medicine Physician · NPI 1639137359

Dr. Daniel A Graybill, MD practises Internal Medicine in Tucson, Arizona. Graduated from Tufts University School of Medicine in 1991, 35 years ago. Practices with Arizona Community Physicians PC, a 164-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Arizona.

Years since qualifying
35
Trained at
Tufts University School of Medicine
Licensed in
AZ
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

3190 N Swan Rd
Tucson, AZ 85712-1227
Phone: (520) 547-9700
Fax: (521) 547-9719
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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 27082 (AZ)

Record details

NPI number1639137359
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 2, 2006
Last updated in NPPESJune 25, 2026
Certification dateJune 25, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Arizona Community Physicians Pc — 164 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 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 patients465
Services billed 5,735 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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 Arizona Community Physicians PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 164 clinicians in the practice; 12 are shown here.

Other providers in Tucson