DR. LUDMIL LAZAROV MD
NPI 1285826404
Internal Medicine in Chicago, IL
About Dr. Ludmil Lazarov Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LUDMIL LAZAROV MD (NPI 1285826404) is an individual internal medicine provider in Chicago, Illinois, licensed in Wisconsin (51870-20) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with Pikeville Medical Center, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 4
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
Dr. Ludmil Lazarov 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
25Medicare enrollment records show Ludmil Lazarov reassigns Medicare billing to 25 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockford, IL 61104
- Reassigned Medicare billing, Illinois enrollment
- 69 clinicians in this Medicare group
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
- 856 clinicians in this Medicare group
Manchester, IA 52057
- Reassigned Medicare billing, Iowa enrollment
- Also billed through NPI 1750354676 (Iowa)
- 169 clinicians in this Medicare group
Novi, MI 48375
- Reassigned Medicare billing, Illinois enrollment
- 64 clinicians in this Medicare group
Wausau, WI 54401
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Aspirus Iron River Hospital & Clinics Inc
- Also billed through NPI 1457865198 (Michigan)
- 200 clinicians in this Medicare group
Athens, WI 54411
- Reassigned Medicare billing, Wisconsin enrollment
- 376 clinicians in this Medicare group
Waverly, IA 50677
- Reassigned Medicare billing, Iowa enrollment
- Also billed through NPI 1265402390 (Iowa)
- 96 clinicians in this Medicare group
Iron River, MI 49935
- Reassigned Medicare billing, Michigan enrollment
- 244 clinicians in this Medicare group
Iron River, MI 49935
- Reassigned Medicare billing, Michigan enrollment
- 264 clinicians in this Medicare group
Kenyon, MN 55946
- Reassigned Medicare billing, Minnesota enrollment
- 249 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
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.
Pikeville Medical Center
Acute Care Hospitals · Pikeville, KYWindom Area Health
Critical Access Hospitals · Windom, MNSt. Patrick Hospital
Acute Care Hospitals · Missoula, MTUniontown Hospital
Acute Care Hospitals · Uniontown, PAAspirus Medford Hospital & Clinics, Inc
Critical Access Hospitals · Medford, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60612
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 Ludmil Lazarov's NPI number?
The NPI number for Ludmil Lazarov is 1285826404. It was assigned to this individual provider in the NPPES registry on August 11, 2007.
Where is Ludmil Lazarov located?
Ludmil Lazarov practices at 820 S Wood St # Mc793, Chicago, IL 60612. The listed phone number is (773) 715-8034.
What is Ludmil Lazarov's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ludmil Lazarov enrolled in Medicare?
Yes. Ludmil Lazarov 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 Ludmil Lazarov's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ludmil Lazarov reassigns Medicare benefits to 25 organizations: Rockford Hospitalist Group, LLC (Rockford, IL), Columbia St. Mary's Hospital Milwaukee, Inc (Milwaukee, WI), Delaware County Memorial Hospital (Manchester, IA), Theoria Medical (Novi, MI), Aspirus Medical Group, Inc. (Wausau, WI) and 20 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 Ludmil Lazarov's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ludmil Lazarov accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Blue Cross Blue Shield of North Dakota and 6 other insurers list Ludmil Lazarov 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 Ludmil Lazarov affiliated with any hospitals?
According to CMS data, Ludmil Lazarov is affiliated with Pikeville Medical Center, Windom Area Health, St. Patrick Hospital, Uniontown Hospital and Aspirus Medford Hospital & Clinics, Inc.
When was this NPI record last updated?
The NPPES record for Ludmil Lazarov was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.
# Dr. Ludmil Lazarov, MD · NPI 1285826404
Internal Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since August 11, 2007.
## Identity
- **NPI:** 1285826404 (Entity type: Individual)
- **Enumerated:** August 11, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 51870-20 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 820 S WOOD ST # MC793, Chicago, IL 60612-4325
- **Phone:** (773) 715-8034
## 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:** 25 organizations under Medicare reassignment (form CMS-855R): Rockford Hospitalist Group, LLC (NPI 1750088852, Rockford, IL); Columbia St. Mary's Hospital Milwaukee, Inc (NPI 1023064482, Milwaukee, WI); Delaware County Memorial Hospital (NPI 1982667929, Manchester, IA); Theoria Medical (NPI 1609362375, Novi, MI); Aspirus Medical Group, Inc. (NPI 1033411822, Wausau, WI); and 20 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** June 2, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1285826404) · Data from the CMS NPPES public registry.