Quick answers
- Which hospitals does John B. Clemmons Jr. work at?
- Medicare's official clinician data lists John B. Clemmons Jr. at 2 hospitals: HCA Houston Healthcare Medical Center and Houston Methodist Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John B. Clemmons Jr. see patients?
- Medicare's clinician data lists 1 practice location in Houston, TX. Call before your visit to confirm the address.
- What is John B. Clemmons Jr.'s specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does John B. Clemmons Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says John B. Clemmons Jr. 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.
- What is the phone number for John B. Clemmons Jr.?
- (713) 528-6562, as listed in official Medicare / NPI Registry data.
- What is John B. Clemmons Jr.'s NPI number?
- 1518997477. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John B. Clemmons Jr. works
Medicare's Facility Affiliation Data lists John B. Clemmons Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HCA Houston Healthcare Medical CenterHouston, TX · Acute Care Hospital · CCN 450659
- Houston Methodist HospitalHouston, TX · Acute Care Hospital · CCN 450358
Practice locations
Addresses where John B. Clemmons Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 1213 Hermann Dr, Suite 220Houston, TX 77004 (713) 528‑6562
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 1975 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518997477 |
| 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