Quick answers
- Does Ari S. Lakritz accept Medicare assignment?
- Yes. Medicare's clinician data says Ari S. Lakritz 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 Ari S. Lakritz see?
- In 2024, CMS data shows 24 Original Medicare patients and 219 services for Ari S. Lakritz. This counts Original Medicare only and measures volume, not quality.
- What is Ari S. Lakritz's NPI number?
- 1942947684. 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 Ari S. Lakritz, 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 | 24 |
|---|---|
| Services billed to Medicare | 219 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Psychotherapy, 1 hour (90837)95 services
- Psychotherapy, 30 minutes (90832)21 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%
- Anxiety75%
- Depression67%
- Arthritis63%
Hospitals where Ari S. Lakritz works
Medicare's Facility Affiliation Data lists Ari S. Lakritz 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.
- OSF Saint Anthony's Health CenterAlton, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 140052
Practice locations
Addresses where Ari S. Lakritz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Saint Anthonys WayAlton, IL 62002 (618) 465‑2571
- 8600 State Route 91, Suite 130Peoria, IL 61615 (309) 683‑5050
Group practices
Medicare enrollment lists Ari S. Lakritz as a member of these groups (CMS data updated October 2, 2026).
- OSF Multi-Specialty Group2,114 clinicians in the group
- OSF Healthcare System95 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in OSF Multi-Specialty Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942947684 |
| 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