Quick answers
- Does Bonni L. Guerin accept Medicare assignment?
- Yes. Medicare's clinician data says Bonni L. Guerin 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 Bonni L. Guerin see?
- In 2024, CMS data shows 505 Original Medicare patients and 1,591 services for Bonni L. Guerin. This counts Original Medicare only and measures volume, not quality.
- What is Bonni L. Guerin's NPI number?
- 1922090802. 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 Bonni L. Guerin, 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 | 505 |
|---|---|
| Services billed to Medicare | 1,591 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)651 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)414 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)178 services
- Insertion of needle into vein for collection of blood sample (36415)128 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)83 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 blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- Arthritis43%
- Diabetes29%
- Osteoporosis25%
Hospitals where Bonni L. Guerin works
Medicare's Facility Affiliation Data lists Bonni L. Guerin 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.
- Centrastate Medical CenterFreehold, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310111
- Chilton Medical CenterPompton Plains, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310017
- Morristown Medical CenterMorristown, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310015
- Overlook Medical CenterSummit, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310051
Practice locations
Addresses where Bonni L. Guerin is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Madison AveMorristown, NJ 07960 (973) 971‑5596
- 1000 Galloping Hill RdUnion, NJ 07083
- 33 Overlook Rd, L01Summit, NJ 07901 (908) 522‑5700
Group practices
Medicare enrollment lists Bonni L. Guerin as a member of this group (CMS data updated October 2, 2026).
- Practice Associates Medical Group1,408 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Morristown
Clinicians with the same Medicare primary specialty in Morristown, NJ — not a recommendation.
Other clinicians in Practice Associates Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Stony Brook, School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922090802 |
| 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