Maria Younessian, BSN, RN, FNP
NPI 1821496159 · Nurse Practitioner · San Antonio, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Younessian, BSN, RN, FNP is a Nurse Practitioner provider in San Antonio, TX (NPI 1821496159).
Provider details
- NPI number
- 1821496159
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- BSN, RN, FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 339048 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
593 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 244 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 239 | $103 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 58 | $105 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 25 | $21 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 14 | $12 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 56 | 52 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 50 | 24 |
| Levothyroxine Sodium | 47 | 13 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 45 | 45 |
| Rosuvastatin Calcium | 31 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$668 across 21 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
Registry dates
- Enumerated
- 2014-12-18
- Last updated
- 2022-05-16
- Certified
- 2022-05-16
Frequently asked questions
- What is Maria Younessian's NPI number?
- Maria Younessian's National Provider Identifier (NPI) is 1821496159, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Younessian's specialty?
- Maria Younessian is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Younessian located?
- Maria Younessian's practice location on file with NPPES is 1139 E Sonterra Blvd, San Antonio, TX 78258-4352.
- What is Maria Younessian's phone number?
- The practice phone number listed in the NPPES registry for Maria Younessian is (210) 404-0000.
- Does Maria Younessian accept Medicare?
- Maria Younessian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Younessian's NPI active?
- Yes — Maria Younessian's NPI (1821496159) is active in the NPPES registry as of the last update on 2022-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.