Mark Sheehan, M.D.
NPI 1568450674 · Cardiovascular Disease Physician · Littleton, CO
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sheehan, M.D. is a Cardiovascular Disease Physician provider in Littleton, CO (NPI 1568450674).
Provider details
- NPI number
- 1568450674
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 22162 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-12
- Last updated
- 2012-10-12
Frequently asked questions
- What is Mark Sheehan's NPI number?
- Mark Sheehan's National Provider Identifier (NPI) is 1568450674, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sheehan's specialty?
- Mark Sheehan is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sheehan located?
- Mark Sheehan's practice location on file with NPPES is 1000 Southpark Dr, Littleton, CO 80120-5654.
- What is Mark Sheehan's phone number?
- The practice phone number listed in the NPPES registry for Mark Sheehan is (303) 744-1065.
- Does Mark Sheehan accept Medicare?
- Mark Sheehan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sheehan's NPI active?
- Yes — Mark Sheehan's NPI (1568450674) is active in the NPPES registry as of the last update on 2012-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.