Margaret Hollar, DO
NPI 1376546770 · Neuroradiology Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Hollar, DO is a Neuroradiology Physician provider in Indianapolis, IN (NPI 1376546770).
Provider details
- NPI number
- 1376546770
- Entity type
- Individual
- Primary specialty
- Neuroradiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 02003362A (IN)
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 tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,472 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 651 | $36 |
| Ct Scan of Upper Spine Without Contrast72125 | 198 | $43 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 141 | $73 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 121 | $76 |
| Mri Scan of Brain Without Contrast70551 | 89 | $64 |
| Mri Scan of Brain Before and After Contrast70553 | 55 | $101 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-31
- Last updated
- 2021-12-02
- Certified
- 2021-12-02
Frequently asked questions
- What is Margaret Hollar's NPI number?
- Margaret Hollar's National Provider Identifier (NPI) is 1376546770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Hollar's specialty?
- Margaret Hollar is listed in the NPPES registry with a primary specialty of Neuroradiology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Hollar located?
- Margaret Hollar's practice location on file with NPPES is 714 N Senate Ave, Indianapolis, IN 46202-3763.
- What is Margaret Hollar's phone number?
- The practice phone number listed in the NPPES registry for Margaret Hollar is (317) 715-6402.
- Does Margaret Hollar accept Medicare?
- Margaret Hollar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Hollar's NPI active?
- Yes — Margaret Hollar's NPI (1376546770) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.