OREST BARTOSZYK M.D.
NPI 1295726537
Internal Medicine - Cardiovascular Disease in Waldorf, MD
About Orest Bartoszyk M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OREST BARTOSZYK M.D. (NPI 1295726537) is an individual cardiovascular disease provider in Waldorf, Maryland, licensed in Maryland (D0039909) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Medstar Saint Mary's Hospital, and is a graduate of Rutgers New Jersey Medical School (1979).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Orest Bartoszyk M.d. 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
2Medicare enrollment records show Orest Bartoszyk reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20036
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3,530 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 277 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 18
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Medstar Saint Mary's Hospital
Acute Care Hospitals · Leonardtown, MDMedstar Southern Maryland Hospital Center
Acute Care Hospitals · Clinton, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20601 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALDORF, MD 20601
WALDORF, MD 20601
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 Orest Bartoszyk's NPI number?
The NPI number for Orest Bartoszyk is 1295726537. It was assigned to this individual provider in the NPPES registry on November 4, 2005.
Where is Orest Bartoszyk located?
Orest Bartoszyk practices at 2670 Crain Hwy Suite 300, Waldorf, MD 20601. The listed phone number is (301) 632-5750.
What is Orest Bartoszyk's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Orest Bartoszyk enrolled in Medicare?
Yes. Orest Bartoszyk 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 Orest Bartoszyk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Orest Bartoszyk reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Medstar Heart Institute LLC (Washington, DC). 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 Orest Bartoszyk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Orest Bartoszyk affiliated with any hospitals?
According to CMS data, Orest Bartoszyk is affiliated with Medstar Saint Mary's Hospital and Medstar Southern Maryland Hospital Center.
When was this NPI record last updated?
The NPPES record for Orest Bartoszyk was last updated on September 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.