Quick answers
- Does Earl F. Cox Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Earl F. Cox 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 Earl F. Cox Iii see?
- In 2024, CMS data shows 246 Original Medicare patients and 10,853 services for Earl F. Cox Iii. This counts Original Medicare only and measures volume, not quality.
- What is Earl F. Cox Iii's NPI number?
- 1164539128. 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 Earl F. Cox 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 | 246 |
|---|---|
| Services billed to Medicare | 10,853 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Therapy procedure using functional activities (97530)2,760 services
- Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes (97112)2,133 services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)1,988 services
- Therapy procedure using manual technique, each 15 minutes (97140)1,845 services
- Therapy procedure in a group setting (97150)1,022 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%
- High blood pressure72%
- Arthritis71%
- Ischemic heart disease29%
- Anxiety23%
- Diabetes22%
Practice locations
Addresses where Earl F. Cox Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 65 Thomas Johnson Dr, Suite DFrederick, MD 21702 (301) 663‑7898
- 850 A E Main StPurcellville, VA 20132
- 850 E Main St, Suite CPurcellville, VA 20132 (540) 751‑1970
- 9093 Ridgefield Dr, Suite 201Frederick, MD 21701 (301) 696‑5595
Group practices
Medicare enrollment lists Earl F. Cox Iii as a member of these groups (CMS data updated October 2, 2026).
- Purcellville Orthopedic Physical Therapy LLC5 clinicians in the group
- Spring Ridge Physical Therapy2 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, Maryland →
Other physical therapists in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Other clinicians in Purcellville Orthopedic Physical Therapy LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PT |
|---|---|
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164539128 |
| 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
- 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