Quick answers
- Does Steve S. Youssefian accept Medicare assignment?
- Yes. Medicare's clinician data says Steve S. Youssefian 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 Steve S. Youssefian see?
- In 2024, CMS data shows 128 Original Medicare patients and 456 services for Steve S. Youssefian. This counts Original Medicare only and measures volume, not quality.
- What is Steve S. Youssefian's NPI number?
- 1043698707. 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 Steve S. Youssefian, 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 | 128 |
|---|---|
| Services billed to Medicare | 456 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)221 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)138 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)24 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)19 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)12 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 cholesterol74%
- Arthritis38%
- Diabetes34%
- Chronic kidney disease27%
- Ischemic heart disease19%
Hospitals where Steve S. Youssefian works
Medicare's Facility Affiliation Data lists Steve S. Youssefian 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.
- Emanate Health Foothill Presbyterian HospitalGlendora, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050597
- Emanate Health Inter-Community HospitalCovina, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050382
Practice locations
Addresses where Steve S. Youssefian is enrolled with Medicare (CMS data updated October 2, 2026).
- 1115 S Sunset AveWest Covina, CA 91790
- 315 N 3rd Ave, Suite 207Covina, CA 91723 (626) 967‑4469
Group practices
Medicare enrollment lists Steve S. Youssefian as a member of this group (CMS data updated October 2, 2026).
- Emanate Health Medical Care Foundation86 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in West Covina
Clinicians with the same Medicare primary specialty in West Covina, CA — not a recommendation.
Other clinicians in Emanate Health Medical Care Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1043698707 |
| 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