Quick answers
- Does Brian L. Hollenbeck accept Medicare assignment?
- Yes. Medicare's clinician data says Brian L. Hollenbeck 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 Brian L. Hollenbeck see?
- In 2024, CMS data shows 137 Original Medicare patients and 472 services for Brian L. Hollenbeck. This counts Original Medicare only and measures volume, not quality.
- What is Brian L. Hollenbeck's NPI number?
- 1841451838. 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 Brian L. Hollenbeck, 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 | 137 |
|---|---|
| Services billed to Medicare | 472 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)122 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)108 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)78 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)56 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)33 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 cholesterol73%
- High blood pressure72%
- Arthritis72%
- Anxiety37%
- Ischemic heart disease32%
- Depression32%
Hospitals where Brian L. Hollenbeck works
Medicare's Facility Affiliation Data lists Brian L. Hollenbeck at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
- Brigham and Women Faulkner HospitalJamaica Plain, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220119
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171
- New England Baptist HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 220088
- North Shore Medical Center -Salem, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220035
Practice locations
Addresses where Brian L. Hollenbeck is enrolled with Medicare (CMS data updated October 2, 2026).
- 125 Parker Hill AveBoston, MA 02120 (617) 754‑5800
Group practices
Medicare enrollment lists Brian L. Hollenbeck as a member of this group (CMS data updated October 2, 2026).
- New England Baptist Medical Associates, Inc.79 clinicians in the group
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Other clinicians in New England Baptist Medical Associates, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1841451838 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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