Quick answers
- Where does Henry J. Grainger see patients?
- Medicare's clinician data lists 2 practice locations, including Jersey Village, TX and Spring, TX. Call before your visit to confirm the address.
- What is Henry J. Grainger's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Cardiovascular Disease (Cardiology) and Geriatric Medicine.
- Does Henry J. Grainger accept Medicare assignment?
- Yes. Medicare's clinician data says Henry J. Grainger 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 Henry J. Grainger?
- (832) 672-7161, as listed in official Medicare / NPI Registry data.
- What is Henry J. Grainger's NPI number?
- 1306892005. 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 Henry J. Grainger is enrolled with Medicare (CMS data updated 2026-10-02).
- 16406 Saint Helier StJersey Village, TX 77040 (832) 672‑7161
- 5039 FM 2920 RdSpring, TX 77388 (281) 586‑3888
Group practices
Medicare enrollment lists Henry J. Grainger as a member of this group (CMS data updated 2026-10-02).
- 1960 Physician Associates18 clinicians in the group
Specialties
Other internal medicine doctors in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 1973 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306892005 |
| 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