Quick answers
- Does Mary Margaret McAshan accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Margaret McAshan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Mary Margaret McAshan's NPI number?
- 1538436886. 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 Mary Margaret McAshan is enrolled with Medicare (CMS data updated October 2, 2026).
- 11500 State Hwy 121, Suite 510Frisco, TX 75035 (469) 200‑4093
- 11500 State Hwy 121, Suite 930Frisco, TX 75035 (469) 200‑4093
Group practices
Medicare enrollment lists Mary Margaret McAshan as a member of this group (CMS data updated October 2, 2026).
- Nazimuddin Mohammed MD PA38 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Frisco
Clinicians with the same Medicare primary specialty in Frisco, TX — not a recommendation.
Other clinicians in Nazimuddin Mohammed MD PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538436886 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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