Quick answers
- Does Caroline R. Hollnagel accept Medicare assignment?
- Yes. Medicare's clinician data says Caroline R. Hollnagel accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Caroline R. Hollnagel see?
- In 2024, CMS data shows 29 Original Medicare patients and 343 services for Caroline R. Hollnagel. This counts Original Medicare only and measures volume, not quality.
- What is Caroline R. Hollnagel's NPI number?
- 1508190299. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Caroline R. Hollnagel, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 29 |
|---|---|
| Services billed to Medicare | 343 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Administration of psychological or neuropsychological test by technician, each additional 30 minutes (96139)118 services
- Evaluation of neuropsychological test, each additional hour (96133)86 services
- Exam of neurobehavioral status, each additional hour (96121)41 services
- Exam of neurobehavioral status, first hour (96116)30 services
- Evaluation of neuropsychological test, first hour (96132)30 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure69%
- Depression52%
- Alzheimer's disease or dementia52%
- Anxiety45%
- Arthritis41%
Practice locations
Addresses where Caroline R. Hollnagel is enrolled with Medicare (CMS data updated October 2, 2026).
- 268 Stillwater AveBangor, ME 04401 (207) 973‑6100
Group practices
Medicare enrollment lists Caroline R. Hollnagel as a member of this group (CMS data updated October 2, 2026).
- Acadia Hospital Corp.85 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Bangor
Clinicians with the same Medicare primary specialty in Bangor, ME — not a recommendation.
Other clinicians in Acadia Hospital Corp.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2003 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508190299 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians