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

Chad Aaron Hills, DO

Individual provider Orthopaedic Surgery Physician · NPI 1801058656

Chad Aaron Hills, DO practises Orthopedic Surgery in Tucson, Arizona. Graduated from Arizona College of Osteopathic Medicine Mid Western University in 2008, 18 years ago. Practices with Tucson Orthopaedic Institute Professional Corporation, a 108-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Arizona, California and Nebraska.

Years since qualifying
18
Trained at
Arizona College of Osteopathic Medicine Mid Western University
Licensed in
AZ, CA, NE
In the registry since
2008
Specialties on file
3
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

5301 E Grant Rd
Tucson, AZ 85712-2805
Phone: (520) 784-6200
Fax: (520) 784-6109
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 340 S Willard St, Cottonwood, AZ 86326-4126 — (928) 649-7960
  • 5301 E Grant Rd Bldg 1, Tucson, AZ 85712 — (520) 784-6200
  • 5301 E Grant Rd Bldg 1, Tucson, AZ 85712 — (520) 784-6200
  • 10833 Le Conte Ave, Los Angeles, CA 90095 — (310) 319-1234

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 007948 (AZ)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 20A16113 (CA)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 689 (NE)

Record details

NPI number1801058656
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 1, 2008
Last updated in NPPESNovember 7, 2024
Certification dateNovember 7, 2024

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolARIZONA COLLEGE OF OSTEOPATHIC MEDICINE MID WESTERN UNIVERSITY
Graduated 2008 (18 years in practice)
Group practice Tucson Orthopaedic Institute Professional Corporation — 108 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Knee replacement 108 times · 94th percentile
Hip replacement 71 times · 93rd percentile
Lower limb (leg) arthroscopy (minimally invasive joint repair) 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients663
Services billed 4,212 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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $317 4 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Benson Hospital Hospital · Benson, AZ · listed as Benson Hospital Corp
  • Canyon Vista Medical Center Hospital · Sierra Vista, AZ · listed as Valley Vista Medical Center
  • Tucson Medical Center Hospital · Tucson, AZ
  • Copper Queen Community Hospital Hospital · Bisbee, AZ
  • Enhabit Home Health Home health agency · Tucson, AZ

Colleagues at Tucson Orthopaedic Institute Professional Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 108 clinicians in the practice; 12 are shown here.

Other providers in Tucson