Quick answers
- Which hospitals does Robert D. Johnston work at?
- Medicare's official clinician data lists Robert D. Johnston at 4 hospitals: HCA Houston Healthcare Clear Lake, Houston Methodist Baytown Hospital, Houston Methodist Clear Lake Hospital and Memorial Hermann - Texas Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert D. Johnston see patients?
- Medicare's clinician data lists 1 practice location in La Porte, TX. Call before your visit to confirm the address.
- What is Robert D. Johnston's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Robert D. Johnston accept Medicare assignment?
- Yes. Medicare's clinician data says Robert D. Johnston 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 Robert D. Johnston?
- (281) 470-2100, as listed in official Medicare / NPI Registry data.
- What is Robert D. Johnston's NPI number?
- 1649272907. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert D. Johnston works
Medicare's Facility Affiliation Data lists Robert D. Johnston 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 Clear LakeWebster, TX · Acute Care Hospital · CCN 450617
- Houston Methodist Baytown HospitalBaytown, TX · Acute Care Hospital · CCN 450424
- Houston Methodist Clear Lake HospitalNassau Bay, TX · Acute Care Hospital · CCN 450709
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · CCN 450068
Practice locations
Addresses where Robert D. Johnston is enrolled with Medicare (CMS data updated 2026-10-02).
- 11006 Spencer HwyLa Porte, TX 77571 (281) 470‑2100
Group practices
Medicare enrollment lists Robert D. Johnston as a member of this group (CMS data updated 2026-10-02).
- Mycare Medical of Texas PLLC29 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas A & M University System, Hsc, College Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649272907 |
| 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