Quick answers
- Does Mark D. Montelongo accept Medicare assignment?
- Medicare's clinician data says Mark D. Montelongo may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Mark D. Montelongo see?
- In 2024, CMS data shows 44 Original Medicare patients and 178 services for Mark D. Montelongo. This counts Original Medicare only and measures volume, not quality.
- What is Mark D. Montelongo's NPI number?
- 1063726750. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mark D. Montelongo, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 44 |
|---|---|
| Services billed to Medicare | 178 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)30 services
- Detection test by immunoassay with direct visual observation for influenza virus (87804)26 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (87426)12 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol70%
- High blood pressure59%
- Arthritis52%
- Anxiety32%
- Depression30%
- Chronic kidney disease25%
Practice locations
Addresses where Mark D. Montelongo is enrolled with Medicare (CMS data updated October 2, 2026).
- 9205 Legacy DrFrisco, TX 75033 (972) 625‑6020
Group practices
Medicare enrollment lists Mark D. Montelongo as a member of this group (CMS data updated October 2, 2026).
- Legacy Urgent Care PA159 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Frisco
Clinicians with the same Medicare primary specialty in Frisco, TX — not a recommendation.
Other clinicians in Legacy Urgent Care PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1063726750 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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