Mallory Clark, D.O.
Hospitalist Physician · Aurora, CO
Mallory Clark, D.O. is a hospitalist physician with a practice address in Aurora, Colorado, and NPI 1659750545, issued on May 25, 2015. Check the license (Colorado CDR.0005274, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mallory Clark
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- CDR.0005274 CO
R6166 TX
Self-reported in NPPES; status is on the state search - Practice location
- 12605 E 16TH Ave, Aurora, CO 80045
- Phone
- (720) 848-0000
- Enumerated
- May 25, 2015
- Record last updated
- Sep 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20250819004941); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2015
- 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 Mallory Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license CDR.0005274Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average hospitalist physician in 2024
167 Medicare Part D claims for 58 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Eliquis13 claims
- Prednisone13 claims
- Pantoprazole Sodium11 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 2 group practices
- Scott And White ClinicCollege Station, TX
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mallory Clark among 806 hospitalist physician records in Colorado
Mallory Clark, D.O. 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 2015, is newer than 62% of them.
- NPI issued2015 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2015 · 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 Mallory Clark, D.O.'s NPI number?
Mallory Clark, D.O.'s National Provider Identifier (NPI) is 1659750545, issued on May 25, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mallory Clark, D.O. 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 Mallory Clark, D.O.'s license?
NPPES lists Colorado license number CDR.0005274, 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 Mallory Clark, D.O. prescribe under Medicare Part D?
In 2024, Mallory Clark, D.O. had 167 Medicare Part D claims for 58 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.