Quick answers
- Does Charles J. Gatt accept Medicare assignment?
- Yes. Medicare's clinician data says Charles J. Gatt 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 Charles J. Gatt see?
- In 2024, CMS data shows 287 Original Medicare patients and 2,463 services for Charles J. Gatt. This counts Original Medicare only and measures volume, not quality.
- What is Charles J. Gatt's NPI number?
- 1861497257. 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 Charles J. Gatt, 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 | 287 |
|---|---|
| Services billed to Medicare | 2,463 |
| Different services or procedures | 47 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)232 services
- X-ray of knee, 3 views (73562)184 services
- Aspiration and/or injection of fluid from large joint (20610)158 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)154 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)126 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%
- Arthritis75%
- High blood pressure62%
- Diabetes26%
- Ischemic heart disease25%
- Anxiety21%
Hospitals where Charles J. Gatt works
Medicare's Facility Affiliation Data lists Charles J. Gatt 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.
- Robert Wood Johnson University HospitalNew Brunswick, NJ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 310038
- Robert Wood Johnson University Hospital - SomersetSomerville, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310048
- Saint Peter's University HospitalNew Brunswick, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310070
Practice locations
Addresses where Charles J. Gatt is enrolled with Medicare (CMS data updated October 2, 2026).
- 2 Worlds Fair Dr, University Orthopaedic AssociatesSomerset, NJ 08873 (732) 537‑0909
- 211 N Harrison St, University Orthopaedic AssociatesPrinceton, NJ 08540 (609) 683‑7800
Group practices
Medicare enrollment lists Charles J. Gatt as a member of this group (CMS data updated October 2, 2026).
- Orthonj LLC304 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Somerset
Clinicians with the same Medicare primary specialty in Somerset, NJ — not a recommendation.
Other clinicians in Orthonj LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rowan University School Of Osteopathic Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861497257 |
| 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