Doctor profile · Federal record
Dr. Mark Holley, M.D.
Emergency Medical Services (Emergency Medicine) Physician (CMS: Emergency Medicine) · Denver, CO
- NPI 1588673107
- Accepts Medicare
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2227 West 35Th Ave.
Denver, CO 80211
(303) 455-0815 - Additional location
-
1400 Jackson St
Denver, CO 80206
(303) 388-4461
fax (303) 398-1211
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- April 30, 2021
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207PE0004X — NUCC code
- State license (1)
- Colorado #36330
- Medicaid
- CO #01363308
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588673107. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
156
Distinct HCPCS
5
Medicare allowed
$20,966
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 45 | 44 | $128 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $170 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 32 | 32 | $93 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 23 | 23 | $110 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 15 | $183 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 74. This provider delivers 2.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
69
Patients
69
Total drug cost
$1,071
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cefuroxime (Cefuroxime Axetil) | Brand | 31 | 31 | $475 |
| Cephalexin | Generic | 22 | 22 | $331 |
| Doxycycline Hyclate | Generic | 16 | 16 | $265 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Holley's medical specialty?
Dr. Mark Holley practices Emergency Medical Services (Emergency Medicine) Physician in Denver, CO.
Where does Dr. Mark Holley practice?
Dr. Mark Holley practices at 2227 West 35Th Ave., Denver, CO 80211. Office phone: 3034550815.
What is Dr. Mark Holley's NPI?
Dr. Mark Holley's National Provider Identifier (NPI) is 1588673107, issued by NPPES.
Does Dr. Mark Holley accept Medicare assignment?
Yes. Dr. Mark Holley accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Holley commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.