Matthew Charles Grzegozewski
Emergency Medicine Physician · Lone Tree, CO
Matthew Charles Grzegozewski is an emergency medicine physician with a practice address in Lone Tree, Colorado, and NPI 1417163536, issued on May 15, 2007. Check the license (Colorado DR.0052852, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Matthew Charles Grzegozewski
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- DR.0052852 CO
D66242 MD
Self-reported in NPPES; status is on the state search - Practice location
- 10101 Ridgegate Parkway, Lone Tree, CO 80124
- Phone
- (720) 225-1900
- Enumerated
- May 15, 2007
- Record last updated
- Jul 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (303) 306-7753
- Medicaid ID
- 99936383 CO
- Medicare enrollment
- Enrolled (PECOS I20130909000463); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 2004
- Entity
- Type 1 · individual
Also registered at 10101 Ridgegate Parkway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gerard AshbeckEmergency Medicine Physician1043293756
- Eric BratzEmergency Medicine Physician1134102759
- Jacqueline FitchPhysician Assistant1477545069
- Eric LungEmergency Medicine Physician1144208513
- Mark MaertinsEmergency Medicine Physician1295786838
- Christopher McCarthyPhysician Assistant1477670958
Verify Matthew Charles Grzegozewski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0052852Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average emergency medicine physician in 2024
101 Medicare Part D claims for 56 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $134.76
1 payment: food and beverage; the largest payer was Ceribell, Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- The Memorial HospitalCraig, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emergency Medicine Physician providers in Colorado
There are 1,434 emergency medicine physician records in Colorado.
Other emergency medicine physician records in Colorado
- Steven AaronsonDenver, CO1326081951
- Lauren AbbateAurora, CO1255624276
- Jean Abbott, MDAurora, CO1578672820
- Kalen AbbottAurora, CO1174899314
- William Abbott, M.D.Aurora, CO1013992361
- Charles Abramson, D.O.Glenwood Springs, CO1932335023
- Alan Adams, MDSalida, CO1912972365
- Bruce Adams, M.D.Denver, CO1407946197
- Sabrina Adams, M.D.Denver, CO1174822373
- Erik Adler, M.D.Denver, CO1699909739
Common questions
What is Matthew Charles Grzegozewski's NPI number?
Matthew Charles Grzegozewski's National Provider Identifier (NPI) is 1417163536, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Charles Grzegozewski located?
The NPPES record lists a practice address at 10101 Ridgegate Parkway, Lone Tree, CO, 80124. Phone: (720) 225-1900. Providers update this record themselves, so call before visiting.
How can I verify Matthew Charles Grzegozewski's license?
NPPES lists Colorado license number DR.0052852, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew Charles Grzegozewski prescribe under Medicare Part D?
In 2024, Matthew Charles Grzegozewski had 101 Medicare Part D claims for 56 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Matthew Charles Grzegozewski's MIPS final score?
The 2023 MIPS final score is 88 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.