Quick answers
- Does Robert T. Greenfield Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Robert T. Greenfield Iii 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 Robert T. Greenfield Iii see?
- In 2024, CMS data shows 135 Original Medicare patients and 409 services for Robert T. Greenfield Iii. This counts Original Medicare only and measures volume, not quality.
- What is Robert T. Greenfield Iii's NPI number?
- 1588651137. 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 Robert T. Greenfield Iii, 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 | 135 |
|---|---|
| Services billed to Medicare | 409 |
| Different services or procedures | 47 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)100 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)60 services
- X-ray of lower and sacral spine, 2-3 views (72100)50 services
- X-ray of hip, 2-3 views (73502)32 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)23 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%
- Arthritis75%
- Diabetes37%
- Chronic kidney disease32%
- Ischemic heart disease28%
Hospitals where Robert T. Greenfield Iii works
Medicare's Facility Affiliation Data lists Robert T. Greenfield Iii 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.
- Piedmont Newton HospitalCovington, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110018
- Piedmont Rockdale HospitalConyers, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110091
Practice locations
Addresses where Robert T. Greenfield Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 5671 Peachtree Dunwoody Rd NE, Suite 900 950Atlanta, GA 30342 (404) 847‑9999
- 875 Flat Shoals Rd SE, Suite 150Conyers, GA 30094 (770) 785‑7669
- 9152 Hwy 278 NECovington, GA 30014 (678) 342‑9339
Group practices
Medicare enrollment lists Robert T. Greenfield Iii as a member of these groups (CMS data updated October 2, 2026).
- Physiotherapy Associates Inc1,460 clinicians in the group
- Esop Rehabilitation LLC239 clinicians in the group
- Resurgens, LLC196 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Atlanta
Clinicians with the same Medicare primary specialty in Atlanta, GA — not a recommendation.
Other clinicians in Physiotherapy Associates Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588651137 |
| 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