Quick answers
- Which hospitals does Michael Arriaga work at?
- Medicare's official clinician data lists Michael Arriaga at 5 hospitals: Houston Methodist Clear Lake Hospital, Houston Methodist Hospital, Houston Methodist Sugar Land Hospital, Houston Methodist The Woodlands Hospital and Houston Methodist West Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Arriaga see patients?
- Medicare's clinician data lists 1 practice location in Houston, TX. Call before your visit to confirm the address.
- What is Michael Arriaga's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Michael Arriaga accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Arriaga 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 Michael Arriaga?
- (713) 426-9171, as listed in official Medicare / NPI Registry data.
- What is Michael Arriaga's NPI number?
- 1407292352. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Arriaga works
Medicare's Facility Affiliation Data lists Michael Arriaga at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Houston Methodist Clear Lake HospitalNassau Bay, TX · Acute Care Hospital · CCN 450709
- Houston Methodist HospitalHouston, TX · Acute Care Hospital · CCN 450358
- Houston Methodist Sugar Land HospitalSugar Land, TX · Acute Care Hospital · CCN 450820
- Houston Methodist The Woodlands HospitalThe Woodlands, TX · Acute Care Hospital · CCN 670122
- Houston Methodist West HospitalHouston, TX · Acute Care Hospital · CCN 670077
Practice locations
Addresses where Michael Arriaga is enrolled with Medicare (CMS data updated 2026-10-02).
- 6565 Fannin StHouston, TX 77030 (713) 426‑9171
Group practices
Medicare enrollment lists Michael Arriaga as a member of this group (CMS data updated 2026-10-02).
- Medical Center Hospitalist Associates PLLC33 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407292352 |
| 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