Quick answers
- Does Marika Bergenstock accept Medicare assignment?
- Yes. Medicare's clinician data says Marika Bergenstock 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 Marika Bergenstock see?
- In 2024, CMS data shows 301 Original Medicare patients and 538 services for Marika Bergenstock. This counts Original Medicare only and measures volume, not quality.
- What is Marika Bergenstock's NPI number?
- 1518386960. 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 Marika Bergenstock, 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 | 301 |
|---|---|
| Services billed to Medicare | 538 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Biopsy of large bowel using a flexible endoscope (45380)104 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)77 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)76 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)62 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)50 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 pressure71%
- Arthritis45%
- Anxiety33%
- Diabetes29%
- Depression26%
Hospitals where Marika Bergenstock works
Medicare's Facility Affiliation Data lists Marika Bergenstock 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.
- Geisinger Jersey Shore HospitalJersey Shore, PA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 391300
- Geisinger Medical CenterDanville, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390006
- UPMC WilliamsportWilliamsport, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390045
Practice locations
Addresses where Marika Bergenstock is enrolled with Medicare (CMS data updated October 2, 2026).
- 10 Choate CirMontoursville, PA 17754 (570) 368‑5566
- 100 N Academy AveDanville, PA 17822 (570) 271‑6211
Group practices
Medicare enrollment lists Marika Bergenstock as a member of these groups (CMS data updated October 2, 2026).
- Geisinger Clinic3,467 clinicians in the group
- Geisinger-Hm Joint Venture LLC422 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Montoursville
Clinicians with the same Medicare primary specialty in Montoursville, PA — not a recommendation.
Other clinicians in Geisinger Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1518386960 |
| 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