Quick answers
- Does Gregg M. Slater accept Medicare assignment?
- Yes. Medicare's clinician data says Gregg M. Slater 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 Gregg M. Slater see?
- In 2024, CMS data shows 1,951 Original Medicare patients and 5,059 services for Gregg M. Slater. This counts Original Medicare only and measures volume, not quality.
- What is Gregg M. Slater's NPI number?
- 1578717732. 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 Gregg M. Slater, 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 | 1,951 |
|---|---|
| Services billed to Medicare | 5,059 |
| Different services or procedures | 122 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Ct scan head or brain without contrast (70450)521 services
- X-ray of chest, 1 view (71045)223 services
- Ct scan of upper spine without contrast (72125)176 services
- Ct scan of abdomen and pelvis with contrast (74177)154 services
- Ct scan of blood vessels of neck with contrast (70498)140 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%
- Arthritis64%
- Ischemic heart disease55%
- Diabetes48%
- Anxiety43%
Hospitals where Gregg M. Slater works
Medicare's Facility Affiliation Data lists Gregg M. Slater 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.
- Hunterdon Medical CenterFlemington, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 310005
- Jersey City Medical CenterJersey City, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310074
- Jersey Shore University Medical CenterNeptune, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310073
- Raritan Bay Medical CenterPerth Amboy, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310039
- Southern Ocean Medical CenterManahawkin, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310113
Practice locations
Addresses where Gregg M. Slater is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 121 Route 31, Suite 1100Flemington, NJ 08822 (732) 390‑0040
- 1945 Route 33Neptune, NJ 07753 (732) 775‑5500
- 2100 Wescott DrFlemington, NJ 08822 (732) 390‑0040
- 2221 Sedgwick CtLongmont, CO 80503 (732) 390‑0040
- 483 Cranbury RdEast Brunswick, NJ 08816
Group practices
Medicare enrollment lists Gregg M. Slater as a member of these groups (CMS data updated October 2, 2026).
- University Radiology Group LLC239 clinicians in the group
- Flemington Radiology Associates LLC70 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Flemington
Clinicians with the same Medicare primary specialty in Flemington, NJ — not a recommendation.
Other clinicians in University Radiology Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578717732 |
| 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