Quick answers
- Where does Alexander Constantine see patients?
- Medicare's clinician data lists 2 practice locations, including Sugar Land, TX and Houston, TX. Call before your visit to confirm the address.
- What is Alexander Constantine's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Alexander Constantine accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander Constantine 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 Alexander Constantine?
- (713) 442-9100, as listed in official Medicare / NPI Registry data.
- What is Alexander Constantine's NPI number?
- 1902332901. 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 Alexander Constantine is enrolled with Medicare (CMS data updated 2026-10-02).
- 11555 University BlvdSugar Land, TX 77478 (713) 442‑9100
- 2727 W Holcombe BlvdHouston, TX 77025 (713) 442‑0000
Group practices
Medicare enrollment lists Alexander Constantine as a member of this group (CMS data updated 2026-10-02).
- Kelsey-Seybold Medical Group, PLLC957 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Sugar Land
Clinicians with the same Medicare primary specialty in Sugar Land, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902332901 |
| 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