Mark Thomas Holley, M.D.
Emergency Medical Services (Emergency Medicine) Physician · Denver, CO
Mark Thomas Holley, M.D. is an emergency medical services (emergency medicine) physician with a practice address in Denver, Colorado, and NPI 1588673107, issued on Aug 5, 2006. Check the license (Colorado 36330, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Thomas Holley
- Credential
- M.D.
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- 36330 CO
Self-reported in NPPES; status is on the state search - Practice location
- 2227 West 35TH Ave., Denver, CO 80211
- Phone
- (303) 455-0815
- Enumerated
- Aug 5, 2006
- Record last updated
- Apr 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 01363308 CO
- Medicare enrollment
- Enrolled (PECOS I20060301000547); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 68 in Colorado → Look up another NPI →
Verify Mark Thomas Holley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 36330Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024
178 Medicare Part D claims for 145 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 12 claims were for opioids.
Most prescribed
- Doxycycline Hyclate27 claims
- Cephalexin26 claims
- Cefuroxime21 claims
- Prednisone13 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
- Usacs Community Emergency Services OF Colorado Inc.Arvada, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Thomas Holley among 68 emergency medical services (emergency medicine) physician records in Colorado
Mark Thomas Holley, M.D. is one of 68 emergency medical services (emergency medicine) physician records with a practice address in Colorado. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 38% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileYes · 34% of these records are
- Graduated1994 · median 1999 among the 23 with a school on file
- Record last updated2021 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in Colorado
There are 68 emergency medical services (emergency medicine) physician records in Colorado.
All 68 in Colorado → Every provider in Denver → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Mariah BellingerDenver, CO 802041417246380
- Arieh Levine, MDDenver, CO 802181902081243
- Peter Pryor, MDDenver, CO 802041063542785
- Logan Murphy, EMTDenver, CO 802031366310716
- Solomon SeyoumDenver, CO 802241083351704
- Kelli Jones, M.D.Lakewood, CO 802281558370726
- Reegan Ochoa, EMTThornton, CO 802331235084781
- Roy Cromer, MDDenver, CO 802561780649798
Common questions
What is Mark Thomas Holley, M.D.'s NPI number?
Mark Thomas Holley, M.D.'s National Provider Identifier (NPI) is 1588673107, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Thomas Holley, M.D. located?
The NPPES record lists a practice address at 2227 West 35TH Ave., Denver, CO, 80211. Phone: (303) 455-0815. Providers update this record themselves, so call before visiting.
How can I verify Mark Thomas Holley, M.D.'s license?
NPPES lists Colorado license number 36330, 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 Mark Thomas Holley, M.D. prescribe under Medicare Part D?
In 2024, Mark Thomas Holley, M.D. had 178 Medicare Part D claims for 145 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. 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.