Quick answers
- Does Gregg L. Massanelli accept Medicare assignment?
- Yes. Medicare's clinician data says Gregg L. Massanelli 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 L. Massanelli see?
- In 2024, CMS data shows 579 Original Medicare patients and 18,864 services for Gregg L. Massanelli. This counts Original Medicare only and measures volume, not quality.
- What is Gregg L. Massanelli's NPI number?
- 1538156492. 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 L. Massanelli, 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 | 579 |
|---|---|
| Services billed to Medicare | 18,864 |
| Different services or procedures | 121 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)16,440 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)287 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)275 services
- Aspiration and/or injection of fluid from large joint (20610)233 services
- X-ray of knee, 3 views (73562)224 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%
- Arthritis72%
- High cholesterol71%
- Ischemic heart disease38%
- Diabetes31%
- Depression24%
Hospitals where Gregg L. Massanelli works
Medicare's Facility Affiliation Data lists Gregg L. Massanelli 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.
- Ashley County Medical CenterCrossett, AR · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 041323
- Baptist Health Medical Center-Drew CountyMonticello, AR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 040051
- South Arkansas Regional Hospital LLCEl Dorado, AR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 040088
Practice locations
Addresses where Gregg L. Massanelli is enrolled with Medicare (CMS data updated October 2, 2026).
- 2700 Vine StEl Dorado, AR 71730
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Arkansas
Clinicians with the same Medicare primary specialty in Arkansas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arkansas College Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538156492 |
| 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