Samer Assaf, M.D.
NPI 1659785970 · Emergency Medicine Physician · Orange, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samer Assaf, M.D. is a Emergency Medicine Physician provider in Orange, CA (NPI 1659785970).
Provider details
- NPI number
- 1659785970
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
15 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 15 | $122 |
Typical Medicare-allowed amounts for these services range $122–$122 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 44 | 44 |
| Ondansetronbrand: Ondansetron Odt | 35 | 35 |
| Cephalexin | 28 | 28 |
| Prednisone | 23 | 23 |
| Cefpodoxime Proxetil | 18 | 18 |
| Azithromycin | 13 | 12 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-13
- Last updated
- 2021-12-05
- Certified
- 2021-12-05
Frequently asked questions
- What is Samer Assaf's NPI number?
- Samer Assaf's National Provider Identifier (NPI) is 1659785970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samer Assaf's specialty?
- Samer Assaf is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Samer Assaf located?
- Samer Assaf's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Samer Assaf's phone number?
- The practice phone number listed in the NPPES registry for Samer Assaf is (714) 456-5705.
- Does Samer Assaf accept Medicare?
- Samer Assaf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samer Assaf's NPI active?
- Yes — Samer Assaf's NPI (1659785970) is active in the NPPES registry as of the last update on 2021-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.