Quick answers
- Where does Ruby S. John see patients?
- Medicare's clinician data lists 2 practice locations, including The Woodlands, TX and Magnolia, TX. Call before your visit to confirm the address.
- What is Ruby S. John's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Ruby S. John accept Medicare assignment?
- Yes. Medicare's clinician data says Ruby S. John 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 Ruby S. John?
- (281) 356-1945, as listed in official Medicare / NPI Registry data.
- What is Ruby S. John's NPI number?
- 1629224118. 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 Ruby S. John is enrolled with Medicare (CMS data updated 2026-10-02).
- 10020 Research Forest Dr, Suite AThe Woodlands, TX 77354 (281) 356‑1945
- 6912 FM 1488 Rd, Suite AMagnolia, TX 77354 (281) 356‑1945
Group practices
Medicare enrollment lists Ruby S. John as a member of this group (CMS data updated 2026-10-02).
- Westwood Primary Care, PLLC20 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in The Woodlands
Clinicians with the same Medicare primary specialty in The Woodlands, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629224118 |
| 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