Quick answers
- Which hospitals does Mark W. Chang work at?
- Medicare's official clinician data lists Mark W. Chang at 5 hospitals: Franklin Woods Community Hospital, Greeneville Community Hospital, Johnson City Medical Center, Sycamore Shoals Hospital and Wellmont Holston Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Chang see patients?
- Medicare's clinician data lists 7 practice locations, including Pennington Gap, VA, Mountain City, TN and Big Stone Gap, VA. Call before your visit to confirm the address.
- What is Mark W. Chang's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Mark W. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Chang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Mark W. Chang offer telehealth?
- Medicare's clinician data says Mark W. Chang offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark W. Chang?
- (423) 230-5000, as listed in official Medicare / NPI Registry data.
- What is Mark W. Chang's NPI number?
- 1174632475. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark W. Chang works
Medicare's Facility Affiliation Data lists Mark W. Chang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franklin Woods Community HospitalJohnson City, TN · Acute Care Hospital · CCN 440184
- Greeneville Community HospitalGreeneville, TN · Acute Care Hospital · CCN 440050
- Johnson City Medical CenterJohnson City, TN · Acute Care Hospital · CCN 440063
- Sycamore Shoals HospitalElizabethton, TN · Acute Care Hospital · CCN 440018
- Wellmont Holston Valley Medical CenterKingsport, TN · Acute Care Hospital · CCN 440017
Practice locations
Addresses where Mark W. Chang is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 127 Health Care DrPennington Gap, VA 24277 (423) 230‑5000
- 127 Health Care Dr, Suite 3Pennington Gap, VA 24277 (276) 679‑0252
- 1901 S Shady St, Suite 1Mountain City, TN 37683 (423) 727‑6674
- 1990 Holton Ave EBig Stone Gap, VA 24219 (276) 523‑3111
- 2050 Meadowview PkwyKingsport, TN 37660 (423) 230‑5000
Group practices
Medicare enrollment lists Mark W. Chang as a member of this group (CMS data updated 2026-10-02).
- Wellmont Cardiology Services139 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Virginia →
Other cardiologists in Pennington Gap
Clinicians with the same Medicare primary specialty in Pennington Gap, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1174632475 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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