Mariya Apostolova, MD
NPI 1649408477 · Hematology & Oncology Physician · Butler, PA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariya Apostolova, MD is a Hematology & Oncology Physician provider in Butler, PA (NPI 1649408477).
Provider details
- NPI number
- 1649408477
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD450431 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
396 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 | 99 | $118 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 57 | $14 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $171 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 41 | $116 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 34 | $25 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 34 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 93 | 43 |
| Prednisone | 43 | 21 |
| Acyclovir | 41 | 17 |
| Dexamethasone | 36 | 25 |
| Letrozole | 34 | 14 |
| Ondansetron Hcl | 32 | 21 |
| Oxycodone Hcl | 29 | 19 |
| Apixabanbrand: Eliquis |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$195 across 8 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
- 2009-07-01
- Last updated
- 2020-10-29
- Certified
- 2020-10-29
Frequently asked questions
- What is Mariya Apostolova's NPI number?
- Mariya Apostolova's National Provider Identifier (NPI) is 1649408477, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariya Apostolova's specialty?
- Mariya Apostolova is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mariya Apostolova located?
- Mariya Apostolova's practice location on file with NPPES is 160 Hollywood Dr Fl 2, Butler, PA 16001-5600.
- What is Mariya Apostolova's phone number?
- The practice phone number listed in the NPPES registry for Mariya Apostolova is (724) 282-6175.
- Does Mariya Apostolova accept Medicare?
- Mariya Apostolova is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariya Apostolova's NPI active?
- Yes — Mariya Apostolova's NPI (1649408477) is active in the NPPES registry as of the last update on 2020-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.