Quick answers
- Where does Charles A. Duncan see patients?
- Medicare's clinician data lists 1 practice location in San Antonio, TX. Call before your visit to confirm the address.
- What is Charles A. Duncan's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty, and also Pulmonary Disease.
- Does Charles A. Duncan accept Medicare assignment?
- Yes. Medicare's clinician data says Charles A. Duncan 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 Charles A. Duncan offer telehealth?
- Medicare's clinician data says Charles A. Duncan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Charles A. Duncan?
- (210) 692-0361, as listed in official Medicare / NPI Registry data.
- What is Charles A. Duncan's NPI number?
- 1215932462. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Charles A. Duncan is enrolled with Medicare (CMS data updated 2026-10-02).
- 10007 Huebner Rd, Suite 402San Antonio, TX 78240 (210) 692‑0361
Group practices
Medicare enrollment lists Charles A. Duncan as a member of this group (CMS data updated 2026-10-02).
- Pulmonary Consultants of San Antonio PA9 clinicians in the group
Specialties
Other critical care doctors in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215932462 |
| 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 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