Viviana Ionescu-Tiba, MD
NPI 1588737720 · Family Medicine Physician · Northridge, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Viviana Ionescu-Tiba, MD is a Family Medicine Physician provider in Northridge, CA (NPI 1588737720).
Provider details
- NPI number
- 1588737720
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A99311 (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
259 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 135 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 69 | $139 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $194 |
| X-Ray of Chest, 2 Views71046 | 17 | $27 |
| Screening Mammography77067 | 16 | $108 |
Typical Medicare-allowed amounts for these services range $9–$194 (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 · 55 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 205 | 66 |
| Losartan Potassium | 116 | 37 |
| Lisinopril | 103 | 34 |
| Levothyroxine Sodium | 97 | 33 |
| Amlodipine Besylate | 86 | 28 |
| Metformin Hcl | 76 | 24 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-16
- Last updated
- 2016-11-14
Frequently asked questions
- What is Viviana Ionescu-Tiba's NPI number?
- Viviana Ionescu-Tiba's National Provider Identifier (NPI) is 1588737720, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viviana Ionescu-Tiba's specialty?
- Viviana Ionescu-Tiba is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Viviana Ionescu-Tiba located?
- Viviana Ionescu-Tiba's practice location on file with NPPES is 18460 Roscoe Blvd, Northridge, CA 91325-4107.
- What is Viviana Ionescu-Tiba's phone number?
- The practice phone number listed in the NPPES registry for Viviana Ionescu-Tiba is (818) 734-3600.
- Does Viviana Ionescu-Tiba accept Medicare?
- Viviana Ionescu-Tiba is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Viviana Ionescu-Tiba's NPI active?
- Yes — Viviana Ionescu-Tiba's NPI (1588737720) is active in the NPPES registry as of the last update on 2016-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.