Quick answers
- Where does John R. Jackson see patients?
- Medicare's clinician data lists 1 practice location in San Marcos, TX. Call before your visit to confirm the address.
- What is John R. Jackson's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does John R. Jackson accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Jackson 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 R. Jackson?
- (512) 393-3325, as listed in official Medicare / NPI Registry data.
- What is John R. Jackson's NPI number?
- 1457350902. 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 John R. Jackson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1290 Wonder World Dr, 1100 Wellmed at San MarcosSan Marcos, TX 78666 (512) 393‑3325
Group practices
Medicare enrollment lists John R. Jackson as a member of this group (CMS data updated 2026-10-02).
- Wellmed Medical Group PA646 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in San Marcos
Clinicians with the same Medicare primary specialty in San Marcos, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457350902 |
| 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