Youssef Youssef, M.D.
NPI 1316958143 · Emergency Medicine Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Youssef Youssef, M.D. is a Emergency Medicine Physician provider in Fremont, CA (NPI 1316958143).
Provider details
- NPI number
- 1316958143
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A85040 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
849 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 354 | $133 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 240 | $131 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 99 | $89 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 87 | $195 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 69 | $187 |
Typical Medicare-allowed amounts for these services range $89–$195 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 34 | 26 |
| Levofloxacin | 27 | 26 |
| Prednisone | 26 | 24 |
| Amlodipine Besylate | 21 | 19 |
| Doxycycline Hyclate | 17 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
| Doxycycline Monohydrate | 14 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2010-06-14
Frequently asked questions
- What is Youssef Youssef's NPI number?
- Youssef Youssef's National Provider Identifier (NPI) is 1316958143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Youssef Youssef's specialty?
- Youssef Youssef is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Youssef Youssef located?
- Youssef Youssef's practice location on file with NPPES is 2000 Mowry Ave, Fremont, CA 94538-1716.
- What is Youssef Youssef's phone number?
- The practice phone number listed in the NPPES registry for Youssef Youssef is (510) 795-2013.
- Does Youssef Youssef accept Medicare?
- Youssef Youssef is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Youssef Youssef's NPI active?
- Yes — Youssef Youssef's NPI (1316958143) is active in the NPPES registry as of the last update on 2010-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.