Holli Horak, M.D.
NPI 1578592036 · Neurology Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Holli Horak, M.D. is a Neurology Physician provider in Tucson, AZ (NPI 1578592036).
Provider details
- NPI number
- 1578592036
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 35069379 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
528 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 121 | $63 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 114 | $94 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886 | 84 | $43 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 82 | $137 |
| Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Limited Study95885 | 32 | $18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 120 | 43 |
| Pyridostigmine Bromide | 107 | 37 |
| Prednisone | 91 | 27 |
| Riluzole | 49 | 14 |
| Mycophenolate Mofetil | 44 | 15 |
| Methotrexate Sodiumbrand: Methotrexate | 41 | 15 |
| Azathioprine | 41 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$231 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-30
- Last updated
- 2018-12-05
Frequently asked questions
- What is Holli Horak's NPI number?
- Holli Horak's National Provider Identifier (NPI) is 1578592036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Holli Horak's specialty?
- Holli Horak is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Holli Horak located?
- Holli Horak's practice location on file with NPPES is 3838 N Campbell Ave, Bldg 2, Tucson, AZ 85719.
- What is Holli Horak's phone number?
- The practice phone number listed in the NPPES registry for Holli Horak is (520) 694-8888.
- Does Holli Horak accept Medicare?
- Holli Horak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Holli Horak's NPI active?
- Yes — Holli Horak's NPI (1578592036) is active in the NPPES registry as of the last update on 2018-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.