Mark Mikkelsen, MD
NPI 1831252360 · Pulmonary Disease Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mikkelsen, MD is a Pulmonary Disease Physician provider in Aurora, CO (NPI 1831252360).
Provider details
- NPI number
- 1831252360
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD426191 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
90 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 72 | $209 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 18 | $117 |
Typical Medicare-allowed amounts for these services range $117–$209 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 3400 Civic Center Blvd Fl 1Philadelphia, PA 19104-5161Phone: (215) 662-3202Fax: (215) 349-8432
Registry dates
- Enumerated
- 2006-12-18
- Last updated
- 2021-12-03
- Certified
- 2021-12-03
Frequently asked questions
- What is Mark Mikkelsen's NPI number?
- Mark Mikkelsen's National Provider Identifier (NPI) is 1831252360, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mikkelsen's specialty?
- Mark Mikkelsen is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mikkelsen located?
- Mark Mikkelsen's practice location on file with NPPES is 12605 E 16th Ave, Aurora, CO 80045-2545.
- What is Mark Mikkelsen's phone number?
- The practice phone number listed in the NPPES registry for Mark Mikkelsen is (720) 848-0000.
- Does Mark Mikkelsen accept Medicare?
- Mark Mikkelsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mikkelsen's NPI active?
- Yes — Mark Mikkelsen's NPI (1831252360) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.