MATTHEW CHARLES GRZEGOZEWSKI
NPI 1417163536
Emergency Medicine in Lone Tree, CO
About Matthew Charles Grzegozewski NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW CHARLES GRZEGOZEWSKI (NPI 1417163536) is an individual emergency medicine provider in Lone Tree, Colorado, licensed in Colorado (DR.0052852) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of Eastern Virginia Medical School (2004).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Matthew Charles Grzegozewski 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
3Medicare enrollment records show Matthew Grzegozewski reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80231
- Reassigned Medicare billing, Colorado enrollment
- 219 clinicians in this Medicare group
Leadville, CO 80461
- Reassigned Medicare billing, Colorado enrollment
- 55 clinicians in this Medicare group
Steamboat Springs, CO 80487
- Reassigned Medicare billing, Colorado enrollment
- Also billed through NPI 1063418424 (Colorado)
- 74 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80124 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LONE TREE, CO 80124
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 Matthew Grzegozewski's NPI number?
The NPI number for Matthew Grzegozewski is 1417163536. It was assigned to this individual provider in the NPPES registry on May 15, 2007. The provider is also known as Matthew C. Grzegozewski MD.
Where is Matthew Grzegozewski located?
Matthew Grzegozewski practices at 10101 Ridgegate Parkway, Lone Tree, CO 80124. The listed phone number is (720) 225-1900.
What is Matthew Grzegozewski's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Matthew Grzegozewski enrolled in Medicare?
Yes. Matthew Grzegozewski 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 Matthew Grzegozewski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Grzegozewski reassigns Medicare benefits to 3 organizations: Carepoint Emergency Medicine, PLLC (Denver, CO), St. Vincent General Hospital District (Leadville, CO) and The Memorial Hospital (Steamboat Springs, CO). 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 Matthew Grzegozewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Matthew Grzegozewski was last updated on July 2, 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.
# Matthew Charles Grzegozewski · NPI 1417163536
Emergency Medicine physician in Lone Tree, Colorado. Individual provider, active in the CMS NPPES registry since May 15, 2007.
## Identity
- **NPI:** 1417163536 (Entity type: Individual)
- **Enumerated:** May 15, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** DR.0052852 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 10101 RIDGEGATE PARKWAY, Lone Tree, CO 80124-9810
- **Phone:** (720) 225-1900 · **Fax:** (303) 306-7753
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Carepoint Emergency Medicine, PLLC (NPI 1134590318, Denver, CO); St. Vincent General Hospital District (NPI 1457315152, Leadville, CO); The Memorial Hospital (NPI 1750958229, Steamboat Springs, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Eastern Virginia Medical School, class of 2004
## Record status
- **NPPES last updated:** July 2, 2015
- **Other identifiers:** Medicare PIN 302868YL2G (CO); Medicaid 99936383 (CO); Medicare PIN 30286BYL2G (CO); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1417163536) · Data from the CMS NPPES public registry.