Quick answers
- Does Joel S. Grossman accept Medicare assignment?
- Yes. Medicare's clinician data says Joel S. Grossman 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 Joel S. Grossman see?
- In 2024, CMS data shows 1,121 Original Medicare patients and 388,219 services for Joel S. Grossman. This counts Original Medicare only and measures volume, not quality.
- What is Joel S. Grossman's NPI number?
- 1699838979. 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 Joel S. Grossman, 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 | 1,121 |
|---|---|
| Services billed to Medicare | 388,219 |
| Different services or procedures | 151 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) (Q0138)109,650 services
- Injection, pembrolizumab, 1 mg (J9271)21,200 services
- Injection, epoetin alfa, (for non-esrd use), 1000 units (J0885)16,300 services
- Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg (J1569)12,162 services
- Injection, denosumab, 1 mg (J0897)10,980 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%
- Arthritis56%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)45%
- Ischemic heart disease41%
- Chronic kidney disease30%
Hospitals where Joel S. Grossman works
Medicare's Facility Affiliation Data lists Joel S. Grossman 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.
- Naples Community HospitalNaples, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100018
- Physicians Regional Medical Center - Pine RidgeNaples, FL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 100286
Practice locations
Addresses where Joel S. Grossman is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 Goodlette Rd N, Research Institute LLCNaples, FL 34102 (239) 424‑0656
Group practices
Medicare enrollment lists Joel S. Grossman as a member of this group (CMS data updated October 2, 2026).
- Florida Cancer Specialists and Research Institute, LLC498 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in Naples
Clinicians with the same Medicare primary specialty in Naples, FL — not a recommendation.
Other clinicians in Florida Cancer Specialists and Research Institute, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 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) | 1699838979 |
| 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