Nataliya Mar, MD
NPI 1922240191 · Hematology & Oncology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nataliya Mar, MD is a Hematology & Oncology Physician provider in Orange, CA (NPI 1922240191).
Provider details
- NPI number
- 1922240191
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
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
17 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,967 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) |
|---|---|---|
| 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'SG2211 | 617 | $18 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 561 | $158 |
| 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'SG2211 | 320 | $18 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 237 | $160 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 119 | 33 |
| Darolutamidebrand: Nubeqa | 85 | 15 |
| Levothyroxine Sodium | 80 | 20 |
| Apixabanbrand: Eliquis | 72 | 16 |
| Cabozantinib S-Malatebrand: Cabometyx | 71 | 12 |
| Ondansetronbrand: Ondansetron Odt | 67 | 40 |
| Potassium Chloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28,988 across 39 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
- 2009-04-02
- Last updated
- 2018-05-08
Frequently asked questions
- What is Nataliya Mar's NPI number?
- Nataliya Mar's National Provider Identifier (NPI) is 1922240191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nataliya Mar's specialty?
- Nataliya Mar is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Nataliya Mar located?
- Nataliya Mar's practice location on file with NPPES is 101 the City Drive South, Orange, CA 92868-3201.
- What is Nataliya Mar's phone number?
- The practice phone number listed in the NPPES registry for Nataliya Mar is (714) 456-8000.
- Does Nataliya Mar accept Medicare?
- Nataliya Mar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nataliya Mar's NPI active?
- Yes — Nataliya Mar's NPI (1922240191) is active in the NPPES registry as of the last update on 2018-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.