Dr. Mark G. Freeman, MD
Joint Replacement Surgery (Adult Reconstructive Orthopaedic Surgery Physician)
- Medicare participating
At a glance
- Medical school
- University of Virginia School of Medicine (2000)
- Years since graduation
- 26
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 499
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2000Medical school: University of Virginia School of Medicine
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Adult Reconstructive Orthopaedic Surgery Physician primary
TN license 37747 -
Orthopaedic Surgery Physician
NC license 2005-00744
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Erlanger Medical Center Chattanooga, TN
- Erlanger Murphy Medical Center Murphy, NC
Medical groups
- Erlanger Health (507 clinicians)
- Chattanooga Hamilton County Hospital Authority (146 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 499
- Services billed
- 4,213
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 339 | 273 |
| X-ray of knee, 3 views | 304 | 239 |
| Established patient office or other outpatient visit, 30-39 minutes | 192 | 178 |
| X-ray of hip, 2-3 views | 137 | 116 |
| Replacement of knee joint, both sides of knee | 85 | 81 |
| Computer-assisted surgery for muscle and bone procedure | 79 | 77 |
| X-ray for bone length assessment | 63 | 62 |
| New patient office or other outpatient visit, 30-44 minutes | 59 | 59 |
| Injection, methylprednisolone acetate, 80 mg | 54 | 39 |
| Aspiration and/or injection of fluid from large joint | 48 | 41 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Diclofenac Sodium Other prescribers in Chattanooga, TN | 31 |
| Methocarbamol Other prescribers in Chattanooga, TN | 15 |
| Methylprednisolone Other prescribers in Chattanooga, TN | 14 |
| Tramadol Hcl Other prescribers in Chattanooga, TN | 12 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 6 companies reported 18 payments worth $663 in total to this clinician.
| Smith+nephew, Inc. | $554 |
|---|---|
| Djo, LLC | $25.91 |
| Anika Therapeutics, Inc. | $24.51 |
| Acera Surgical, Inc. | $24.25 |
| Ferring Pharmaceuticals Inc. | $20.98 |
| Medtronic, Inc. | $13.79 |
| Food and Beverage | $663 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $26,947 in research payments for these studies, mostly to the institutions running them.
- A Multi-Center Study in Patients Undergoing Total Knee Replacement with Smith+Nephew Porous Total Knee Arthroplast System
Smith+nephew, Inc.
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.