Gregory Mitchell Petersen, MD
Hospitalist Physician · Aurora, CO
Gregory Mitchell Petersen, MD is a hospitalist physician with a practice address in Aurora, Colorado, and NPI 1518544857, issued on Mar 24, 2021. Check the license (Colorado DR.0073229, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Mitchell Petersen
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- DR.0073229 CO
Self-reported in NPPES; status is on the state search - Practice location
- 12605 E 16TH Ave, Aurora, CO 80045
- Phone
- (720) 848-0000
- Enumerated
- Mar 24, 2021
- Record last updated
- Jan 31, 2025
- Medicare enrollment
- Enrolled (PECOS I20240710004266); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 806 in Colorado → Look up another NPI →
Also registered at 12605 E 16TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Mitchell Petersen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0073229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average hospitalist physician in 2024
365 Medicare Part D claims for 76 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Amlodipine Besylate18 claims
- Rosuvastatin Calcium18 claims
- Atorvastatin Calcium17 claims
- Levothyroxine Sodium15 claims
- Losartan Potassium14 claims
- Metoprolol Succinate11 claims
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.
Bills Medicare through one group practice
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Mitchell Petersen among 806 hospitalist physician records in Colorado
Gregory Mitchell Petersen, MD is one of 806 hospitalist physician records with a practice address in Colorado. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 90% of them.
- NPI issued2021 · 90% of these records are older, 6% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2021 · median 2012 among the 622 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
269 hospitalist physician records list a practice address in Aurora
They are 269 of the 17,400 NPPES records with a practice address in Aurora, and 806 hospitalist physician records in Colorado.
All 806 in Colorado → Every provider in Aurora → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Martin Alswang, M.D.Aurora, CO 800451215981881
- Debra Anoff, MDAurora, CO 800451528090115
- Justin Beverly, M.D.Aurora, CO 800451699795211
- Marisha Burden, M.D.Aurora, CO 800451740233113
- Vineet Chopra, MDAurora, CO 800451144289679
- Tracey Clark, M.D.Aurora, CO 800451568413953
- Lee Engelbreth, MDAurora, CO 800451912944190
- Jeannette Guerrasio, MDAurora, CO 800451083648679
Common questions
What is Gregory Mitchell Petersen, MD's NPI number?
Gregory Mitchell Petersen, MD's National Provider Identifier (NPI) is 1518544857, issued on Mar 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Mitchell Petersen, MD located?
The NPPES record lists a practice address at 12605 E 16TH Ave, Aurora, CO, 80045. Phone: (720) 848-0000. Providers update this record themselves, so call before visiting.
How can I verify Gregory Mitchell Petersen, MD's license?
NPPES lists Colorado license number DR.0073229, 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 Gregory Mitchell Petersen, MD prescribe under Medicare Part D?
In 2024, Gregory Mitchell Petersen, MD had 365 Medicare Part D claims for 76 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.