BORISLAV ALEXIEV MD
NPI 1811031370
Pathology - Anatomic Pathology in Baltimore, MD
About Borislav Alexiev Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BORISLAV ALEXIEV MD (NPI 1811031370) is an individual anatomic pathology provider in Baltimore, Maryland, licensed in Maryland (D0066609) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and is a graduate of Other (1984).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Borislav Alexiev 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 Reassignment
Medicare enrollment records show Borislav Alexiev reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Mchenry
Acute Care Hospitals · Mchenry, ILNorthwestern Medicine Delnor Community Hospital
Acute Care Hospitals · Geneva, ILNorthwestern Medicine Central Dupage Hospital
Acute Care Hospitals · Winfield, ILNorthwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILNorthwestern Medicine Kishwaukee Hospital
Acute Care Hospitals · Dekalb, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 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.
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 Borislav Alexiev's NPI number?
The NPI number for Borislav Alexiev is 1811031370. It was assigned to this individual provider in the NPPES registry on February 17, 2007.
Where is Borislav Alexiev located?
Borislav Alexiev practices at 250 W Pratt St Ste 780, Baltimore, MD 21201. The listed phone number is (667) 214-1608.
What is Borislav Alexiev's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Borislav Alexiev enrolled in Medicare?
Yes. Borislav Alexiev 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 organization bills Medicare for Borislav Alexiev's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Borislav Alexiev reassigns Medicare benefits to Northwestern Medical Faculty Foundation (Carol Stream, IL). The 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 Borislav Alexiev's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Borislav Alexiev affiliated with any hospitals?
According to CMS data, Borislav Alexiev is affiliated with Northwestern Medicine Mchenry, Northwestern Medicine Delnor Community Hospital, Northwestern Medicine Central Dupage Hospital, Northwestern Memorial Hospital and Northwestern Medicine Kishwaukee Hospital.
When was this NPI record last updated?
The NPPES record for Borislav Alexiev was last updated on April 6, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Borislav Alexiev, MD · NPI 1811031370
Anatomic Pathology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since February 17, 2007.
## Identity
- **NPI:** 1811031370 (Entity type: Individual)
- **Enumerated:** February 17, 2007
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** D0066609 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 W PRATT ST STE 780, Baltimore, MD 21201-2470
- **Phone:** (667) 214-1608
## 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:** Northwestern Medical Faculty Foundation (NPI 1346235314, Carol Stream, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1984
## Record status
- **NPPES last updated:** April 6, 2015
- **Other identifiers:** Medicare PIN CA9059 (MD); Medicare PIN 132299ZAP4 (MD)
---
Source: [NPI Profile](https://npiprofile.com/npi/1811031370) · Data from the CMS NPPES public registry.