MARIYA H APOSTOLOVA MD
NPI 1649408477
Internal Medicine - Hematology & Oncology in Butler, PA
About Mariya H Apostolova Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIYA H APOSTOLOVA MD (NPI 1649408477) is an individual hematology & oncology provider in Butler, Pennsylvania, licensed in Pennsylvania (MD450431) and active in the NPI registry since July 2009. She is enrolled in Medicare PECOS, is affiliated with Akron General Medical Center, and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mariya H Apostolova Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
9Medicare enrollment records show Mariya Apostolova reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pittsburgh, PA 15213
- Reassigned Medicare billing, Pennsylvania enrollment
- 94 clinicians in this Medicare group
Youngstown, OH 44504
- Reassigned Medicare billing, Ohio enrollment
- 744 clinicians in this Medicare group
Ligonier, PA 15658
- Reassigned Medicare billing, Pennsylvania enrollment
- 771 clinicians in this Medicare group
Wheeling, WV 26003
- Reassigned Medicare billing, West Virginia enrollment
- 275 clinicians in this Medicare group
Philipsburg, PA 16866
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 clinicians in this Medicare group
Cleveland, OH 44195
- Reassigned Medicare billing, Ohio enrollment
- 7,608 clinicians in this Medicare group
Lock Haven, PA 17745
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,405 clinicians in this Medicare group
Wellsboro, PA 16901
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Guthrie Medical Group PC
- 830 clinicians in this Medicare group
Ashland, PA 17921
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: St Lukes Physician Group Inc
- 2,851 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Akron General Medical Center
Acute Care Hospitals · Akron, OHCleveland Clinic
Acute Care Hospitals · Cleveland, OHGeisinger Medical Center
Acute Care Hospitals · Danville, PAReynolds Memorial Hospital
Acute Care Hospitals · Glen Dale, WVWetzel County Hospital
Acute Care Hospitals · New Martinsville, WVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 16001 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BUTLER, PA 16001
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mariya Apostolova's NPI number?
The NPI number for Mariya Apostolova is 1649408477. It was assigned to this individual provider in the NPPES registry on July 1, 2009.
Where is Mariya Apostolova located?
Mariya Apostolova practices at 160 Hollywood Dr Fl 2, Butler, PA 16001. The listed phone number is (724) 282-6175.
What is Mariya Apostolova's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Mariya Apostolova enrolled in Medicare?
Yes. Mariya Apostolova is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mariya Apostolova's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariya Apostolova reassigns Medicare benefits to 9 organizations: Allegheny Clinic Medical Oncology (Pittsburgh, PA), Mercy Health Physicians Youngstown Specialty Care LLC (Youngstown, OH), Dlp Conemaugh Physician Practices LLC (Ligonier, PA), Reynolds Memorial Hospital Inc (Wheeling, WV), Geisinger Clinic (Philipsburg, PA) and 4 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mariya Apostolova's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mariya Apostolova accept?
Health plans from Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., Highmark Blue Cross Blue Shield West Virginia and Peak Health Insurance list Mariya Apostolova as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mariya Apostolova affiliated with any hospitals?
According to CMS data, Mariya Apostolova is affiliated with Akron General Medical Center, Cleveland Clinic, Geisinger Medical Center, Reynolds Memorial Hospital and Wetzel County Hospital.
When was this NPI record last updated?
The NPPES record for Mariya Apostolova was last updated on October 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mariya H Apostolova, MD · NPI 1649408477
Hematology & Oncology physician in Butler, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 1, 2009.
## Identity
- **NPI:** 1649408477 (Entity type: Individual)
- **Enumerated:** July 1, 2009
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** MD450431 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 160 HOLLYWOOD DR FL 2, Butler, PA 16001-5600
- **Phone:** (724) 282-6175
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Allegheny Clinic Medical Oncology (NPI 1831143403, Pittsburgh, PA); Mercy Health Physicians Youngstown Specialty Care LLC (NPI 1609544055, Youngstown, OH); Dlp Conemaugh Physician Practices LLC (NPI 1588070551, Ligonier, PA); Reynolds Memorial Hospital Inc (NPI 1457657991, Wheeling, WV); Geisinger Clinic (NPI 1811948367, Philipsburg, PA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** October 29, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1649408477) · Data from the CMS NPPES public registry.