Quick answers
- Does Aileen P. Oandasan accept Medicare assignment?
- Yes. Medicare's clinician data says Aileen P. Oandasan 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 Aileen P. Oandasan see?
- In 2024, CMS data shows 92 Original Medicare patients and 330 services for Aileen P. Oandasan. This counts Original Medicare only and measures volume, not quality.
- What is Aileen P. Oandasan's NPI number?
- 1376601815. 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 Aileen P. Oandasan, 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 | 92 |
|---|---|
| Services billed to Medicare | 330 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 56 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)191 services
- Psychotherapy, 1 hour (90837)38 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)37 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 cholesterol62%
- Anxiety62%
- High blood pressure59%
- Depression55%
- Arthritis38%
- Diabetes32%
Hospitals where Aileen P. Oandasan works
Medicare's Facility Affiliation Data lists Aileen P. Oandasan 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.
- Jefferson HospitalJefferson Hills, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390265
Practice locations
Addresses where Aileen P. Oandasan is enrolled with Medicare (CMS data updated October 2, 2026).
- 214 College Park PlzJohnstown, PA 15904 (814) 262‑0025
- 404 Old Clairton RdPleasant Hills, PA 15236 (412) 655‑8680
- 830 Old Clairton RdJefferson Hills, PA 15025 (412) 655‑8610
Group practices
Medicare enrollment lists Aileen P. Oandasan as a member of these groups (CMS data updated October 2, 2026).
- Nulton Diagnostic and Treatment Center, PC39 clinicians in the group
- Jefferson Regional Medical Center30 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Johnstown
Clinicians with the same Medicare primary specialty in Johnstown, PA — not a recommendation.
Other clinicians in Nulton Diagnostic and Treatment Center, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas A & M University System, Hsc, College Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1376601815 |
| 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