Quick answers
- Which hospitals does James M. Gregory work at?
- Medicare's official clinician data lists James M. Gregory at 4 hospitals: Memorial Hermann - Texas Medical Center, Memorial Hermann Katy Hospital, Memorial Hermann Memorial City Hospital and Memorial Hermann Sugar Land Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James M. Gregory see patients?
- Medicare's clinician data lists 5 practice locations, including Houston, TX and Lewisville, TX. Call before your visit to confirm the address.
- What is James M. Gregory's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does James M. Gregory accept Medicare assignment?
- Yes. Medicare's clinician data says James M. Gregory 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.
- Does James M. Gregory offer telehealth?
- Medicare's clinician data says James M. Gregory offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James M. Gregory?
- (713) 566-5656, as listed in official Medicare / NPI Registry data.
- What is James M. Gregory's NPI number?
- 1639335359. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James M. Gregory works
Medicare's Facility Affiliation Data lists James M. Gregory at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · CCN 450068
- Memorial Hermann Katy HospitalKaty, TX · Acute Care Hospital · CCN 450847
- Memorial Hermann Memorial City HospitalHouston, TX · Acute Care Hospital · CCN 450610
- Memorial Hermann Sugar Land HospitalSugar Land, TX · Acute Care Hospital · CCN 450848
Practice locations
Addresses where James M. Gregory is enrolled with Medicare (CMS data updated 2026-10-02).
- 5656 Kelley StHouston, TX 77026
- 5656 Kelley St, Fl 2Houston, TX 77026 (713) 566‑5656
- 6410 Fannin StHouston, TX 77030
- 800 College PkwyLewisville, TX 75077 (972) 420‑8543
- 950 Corbindale Rd, Suite 300Houston, TX 77024 (713) 486‑1700
Group practices
Medicare enrollment lists James M. Gregory as a member of these groups (CMS data updated 2026-10-02).
- Legacy Healthcare Services Inc3,223 clinicians in the group
- UT Physicians1,765 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639335359 |
| 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