Holli Ann Horak, M.D.
Neurology Physician · Tucson, AZ
Holli Ann Horak, M.D. is a neurology physician with a practice address in Tucson, Arizona, and NPI 1578592036, issued on Jun 30, 2006. Check the license (Arizona MD42553, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Holli Ann Horak
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- MD42553 AZ
IN01049956A IN
35069379 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3838 N Campbell Ave, Bldg 2, Tucson, AZ 85719
- Phone
- (520) 694-8888
- Enumerated
- Jun 30, 2006
- Record last updated
- Dec 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (520) 694-0235
- Medicaid ID
- 483410 AZ
- Medicare enrollment
- Enrolled (PECOS I20100122000239); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 458 in Arizona → Look up another NPI →
Also registered at 3838 N Campbell Ave, Bldg 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sudeshna Bose, MDNeurology Physician1962414839
- Harvey Buchsbaum, MDNeurology Physician1790757250
- Bruce Coull, MDNeurology Physician1629041942
- Kendra Drake, M.D.Neurology Physician1780893750
- Jacqueline Spera, FNPFamily Nurse Practitioner1144875451
Verify Holli Ann Horak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license MD42553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average neurology physician in 2024
1,258 Medicare Part D claims for 197 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin120 claims
- Pyridostigmine Bromide107 claims
- Prednisone91 claims
- Riluzole49 claims
- Mycophenolate Mofetil44 claims
- Azathioprine41 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $230.76
2 payments; by number, the most common kind was food and beverage; the largest payer was Cadwell Industries, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Banner-University Medical GroupTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Holli Ann Horak among 458 neurology physician records in Arizona
Holli Ann Horak, M.D. is one of 458 neurology physician records with a practice address in Arizona. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1994 · median 2005 among the 298 with a school on file
- Record last updated2018 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Arizona
There are 458 neurology physician records in Arizona.
All 458 in Arizona → Every provider in Tucson → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Sudeshna Bose, MDTucson, AZ 857191962414839
- Harvey Buchsbaum, MDTucson, AZ 857191790757250
- Bruce Coull, MDTucson, AZ 857191629041942
- Judy Dawod, MDTucson, AZ 857191568842961
- Kendra Drake, M.D.Tucson, AZ 857191780893750
- Micah Etter, M.D.Tucson, AZ 857191295182160
- Anita Koshy, M.D.Tucson, AZ 857191326237801
- David Labiner, MDTucson, AZ 857191235236795
Common questions
What is Holli Ann Horak, M.D.'s NPI number?
Holli Ann Horak, M.D.'s National Provider Identifier (NPI) is 1578592036, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Holli Ann Horak, M.D. located?
The NPPES record lists a practice address at 3838 N Campbell Ave, Bldg 2, Tucson, AZ, 85719. Phone: (520) 694-8888. Providers update this record themselves, so call before visiting.
How can I verify Holli Ann Horak, M.D.'s license?
NPPES lists Arizona license number MD42553, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Holli Ann Horak, M.D. prescribe under Medicare Part D?
In 2024, Holli Ann Horak, M.D. had 1,258 Medicare Part D claims for 197 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Holli Ann Horak, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.