Rosana Ayoub, MD
NPI 1255658746 · Endocrinology, Diabetes & Metabolism Physician · Sylmar, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rosana Ayoub, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Sylmar, CA (NPI 1255658746).
Provider details
- NPI number
- 1255658746
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- 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 tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
159 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 147 | $138 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 12 | $236 |
Typical Medicare-allowed amounts for these services range $138–$236 (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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 294 | 54 |
| Levothyroxine Sodium | 235 | 72 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 171 | 58 |
| Tirzepatidebrand: Mounjaro | 147 | 37 |
| Empagliflozinbrand: Jardiance | 115 | 31 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 109 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$224 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 22330 Hawthorne Blvd Ste 216Torrance, CA 90505-2544Phone: (310) 375-7666
Registry dates
- Enumerated
- 2010-04-23
- Last updated
- 2022-02-23
- Certified
- 2022-02-23
Frequently asked questions
- What is Rosana Ayoub's NPI number?
- Rosana Ayoub's National Provider Identifier (NPI) is 1255658746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosana Ayoub's specialty?
- Rosana Ayoub is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Rosana Ayoub located?
- Rosana Ayoub's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342-1437.
- What is Rosana Ayoub's phone number?
- The practice phone number listed in the NPPES registry for Rosana Ayoub is (818) 364-3205.
- Does Rosana Ayoub accept Medicare?
- Rosana Ayoub is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rosana Ayoub's NPI active?
- Yes — Rosana Ayoub's NPI (1255658746) is active in the NPPES registry as of the last update on 2022-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.