Quick answers
- Does Mary Ann Villalon accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Ann Villalon 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.
- How many Medicare patients does Mary Ann Villalon see?
- In 2024, CMS data shows 610 Original Medicare patients and 3,767 services for Mary Ann Villalon. This counts Original Medicare only and measures volume, not quality.
- What is Mary Ann Villalon's NPI number?
- 1447936984. 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 Mary Ann Villalon, 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 | 610 |
|---|---|
| Services billed to Medicare | 3,767 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 81 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)2,254 services
- Psychotherapy with evaluation and management visit, 30 minutes (90833)540 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)534 services
- Psychiatric diagnostic evaluation with medical services (90792)243 services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)113 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 blood pressure75%
- High cholesterol75%
- Depression75%
- Alzheimer's disease or dementia66%
- Anxiety65%
- Arthritis64%
Hospitals where Mary Ann Villalon works
Medicare's Facility Affiliation Data lists Mary Ann Villalon at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140252
Practice locations
Addresses where Mary Ann Villalon is enrolled with Medicare (CMS data updated October 2, 2026).
- 1203 W Augusta BlvdChicago, IL 60642 (773) 248‑2255
- 1902 Wright Pl, Fl 2Carlsbad, CA 92008 (888) 515‑3834
Group practices
Medicare enrollment lists Mary Ann Villalon as a member of these groups (CMS data updated October 2, 2026).
- Memory Check Psychological Services, a Professional Corporation76 clinicians in the group
- Bespoke Psychiatry47 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Other clinicians in Memory Check Psychological Services, a Professional Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447936984 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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