Quick answers
- Which hospitals does John A. Merritt work at?
- Medicare's official clinician data lists John A. Merritt at 1 hospital: Memorial Hermann Houston Physicians Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John A. Merritt see patients?
- Medicare's clinician data lists 6 practice locations, including Houston, TX, Richmond, TX and Webster, TX. Call before your visit to confirm the address.
- What is John A. Merritt's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does John A. Merritt accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Merritt 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 John A. Merritt?
- (713) 400-2990, as listed in official Medicare / NPI Registry data.
- What is John A. Merritt's NPI number?
- 1700805314. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John A. Merritt works
Medicare's Facility Affiliation Data lists John A. Merritt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorial Hermann Houston Physicians HospitalWebster, TX · Acute Care Hospital · CCN 670008
Practice locations
Addresses where John A. Merritt is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1635 N Loop WHouston, TX 77008 (713) 400‑2990
- 1705 Jackson StRichmond, TX 77469 (281) 341‑3000
- 22003 Southwest FwyRichmond, TX 77469 (281) 341‑2000
- 333 N Texas AveWebster, TX 77598 (281) 358‑8114
- 333 N Texas Ave, Suite 1000Webster, TX 77598 (713) 400‑2990
Group practices
Medicare enrollment lists John A. Merritt as a member of these groups (CMS data updated 2026-10-02).
- U S Anesthesia Partners of Texas, PA2,752 clinicians in the group
- Texans Anesthesia Associates PLLC200 clinicians in the group
- Compass Anesthesia Providers, PLLC165 clinicians in the group
- Lonestar Anesthesia Solutions PLLC49 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Texas →
Other nurse anesthetists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700805314 |
| 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