Quick answers
- Which hospitals does Marilyn B. Mayer work at?
- Medicare's official clinician data lists Marilyn B. Mayer at 5 hospitals: HCA Houston Healthcare Kingwood, HCA Houston Healthcare Tomball, Houston Methodist Willowbrook Hospital, Memorial Hermann - Texas Medical Center and Memorial Hermann Memorial City Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marilyn B. Mayer see patients?
- Medicare's clinician data lists 3 practice locations, including Cypress, TX. Call before your visit to confirm the address.
- What is Marilyn B. Mayer's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Marilyn B. Mayer accept Medicare assignment?
- Yes. Medicare's clinician data says Marilyn B. Mayer 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 Marilyn B. Mayer?
- (281) 949-5201, as listed in official Medicare / NPI Registry data.
- What is Marilyn B. Mayer's NPI number?
- 1205818853. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marilyn B. Mayer works
Medicare's Facility Affiliation Data lists Marilyn B. Mayer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HCA Houston Healthcare KingwoodKingwood, TX · Acute Care Hospital · CCN 450775
- HCA Houston Healthcare TomballTomball, TX · Acute Care Hospital · CCN 450670
- Houston Methodist Willowbrook HospitalHouston, TX · Acute Care Hospital · CCN 450844
- Memorial Hermann - Texas Medical CenterHouston, TX · Acute Care Hospital · CCN 450068
- Memorial Hermann Memorial City HospitalHouston, TX · Acute Care Hospital · CCN 450610
Practice locations
Addresses where Marilyn B. Mayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 21216 Northwest Fwy, Suite 260Cypress, TX 77429 (281) 949‑5201
- 21216 Northwest Fwy, Suite 560Cypress, TX 77429 (281) 469‑3949
- 21216 Northwest Fwy, Suite 610Cypress, TX 77429
Group practices
Medicare enrollment lists Marilyn B. Mayer as a member of this group (CMS data updated 2026-10-02).
- North Cypress Medical Partners Inc5 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Cypress
Clinicians with the same Medicare primary specialty in Cypress, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 1990 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205818853 |
| 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