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

Mrs. Holli Ann Horak, MD

Individual provider Neurology Physician · NPI 1578592036

Mrs. Holli Ann Horak, MD practises Neurology in Tucson, Arizona. Graduated from Ohio State University College of Medicine in 1994, 32 years ago. Practices with Banner-University Medical Group, a 1,071-clinician group and accepts Medicare assignment. Licensed in Arizona, Indiana and Ohio.

Years since qualifying
32
Trained at
Ohio State University College of Medicine
Licensed in
AZ, IN, OH
In the registry since
2006
Specialties on file
3
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

3838 N Campbell Ave Bldg 2 Clinic E
Tucson, AZ 85719
Phone: (520) 694-8888
Fax: (520) 694-0235
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence MD42553 (AZ)
Neurology Physician Taxonomy 2084N0400X · Licence 35069379 (OH)
Neurology Physician Taxonomy 2084N0400X · Licence IN01049956A (IN)

Record details

NPI number1578592036
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2006
Last updated in NPPESDecember 5, 2018

Medicare enrollment

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

Medicare specialtyNEUROLOGY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Banner-University Medical Group — 1071 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients274
Services billed 596 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.

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.

Education $184 2 payments · educational material or training, not a fee
Food and Beverage $154 2 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.

Colleagues at Banner-University Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1071 clinicians in the practice; 12 are shown here.

Other providers in Tucson