Quick answers
- Which hospitals does Avi B. Markowitz work at?
- Medicare's official clinician data lists Avi B. Markowitz at 1 hospital: UTMB Health League City Campus Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Avi B. Markowitz see patients?
- Medicare's clinician data lists 1 practice location in Galveston, TX. Call before your visit to confirm the address.
- What is Avi B. Markowitz's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does Avi B. Markowitz accept Medicare assignment?
- Yes. Medicare's clinician data says Avi B. Markowitz 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 Avi B. Markowitz?
- (409) 772-2222, as listed in official Medicare / NPI Registry data.
- What is Avi B. Markowitz's NPI number?
- 1336155662. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Avi B. Markowitz works
Medicare's Facility Affiliation Data lists Avi B. Markowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UTMB Health League City Campus HospitalLeague City, TX · Acute Care Hospital · CCN 450018
Practice locations
Addresses where Avi B. Markowitz is enrolled with Medicare (CMS data updated 2026-10-02).
- 301 University BlvdGalveston, TX 77555 (409) 772‑2222
Group practices
Medicare enrollment lists Avi B. Markowitz as a member of this group (CMS data updated 2026-10-02).
- UTMB Faculty Group Practice1,101 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Galveston
Clinicians with the same Medicare primary specialty in Galveston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336155662 |
| 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