Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Gregory L Miller, DO

Individual provider Internal Medicine Physician · NPI 1821040783

Dr. Gregory L Miller, DO practises Internal Medicine in Tucson, Arizona. Graduated from Ohio University, College of Osteopathic Medicine in 1984, 42 years ago. Practices with Oak Street Health Physicians Group of Arizona PLLC, a 76-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona, New Mexico, Ohio and Wisconsin.

Years since qualifying
42
Trained at
Ohio University, College of Osteopathic Medicine
Licensed in
AZ, NM, OH, WI
In the registry since
2006
Specialties on file
4
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

7040 E Golf Links Rd
Tucson, AZ 85730-1000
Phone: (520) 200-6709
Fax: (520) 532-1602
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8054 Lea Ct, Holland, OH 43528-8042 — (419) 868-5596

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4005 (AZ)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 34-003773 (OH)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 69191 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4005 (NM)

Record details

NPI number1821040783
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 17, 2006
Last updated in NPPESSeptember 18, 2025
Certification dateSeptember 18, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolOHIO UNIVERSITY, COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1984 (42 years in practice)
Group practice Oak Street Health Physicians Group Of Arizona Pllc — 76 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 patients131
Services billed 470 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 Oak Street Health Physicians Group of Arizona PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 76 clinicians in the practice; 12 are shown here.

Other providers in Tucson