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

Timothy D Olthoff, DO

Individual provider Diagnostic Radiology Physician · NPI 1225019425

Timothy D Olthoff, DO practises Diagnostic Radiology in Prescott, Arizona. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1999, 27 years ago. Practices with Prescott Radiologists LLP, a 12-clinician group and accepts Medicare assignment. Licensed in Arizona and Indiana.

Years since qualifying
27
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
AZ, IN
In the registry since
2005
Specialties on file
2
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

810 Whipple St
Prescott, AZ 86301-1606
Phone: (928) 771-7577
Fax: (928) 458-2080
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 006190 (AZ)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 02002900 (IN)

Record details

NPI number1225019425
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 7, 2005
Last updated in NPPESJuly 21, 2022

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1999 (27 years in practice)
Group practice Prescott Radiologists Llp — 12 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 patients5,168
Services billed 9,138 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Prescott Radiologists LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 12 clinicians in the practice; 3 are shown here.

Other providers in Prescott