MARK A HUUN M.D.
NPI 1366579245
Internal Medicine in Denver, CO
About Mark A Huun M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK A HUUN M.D. (NPI 1366579245) is an individual internal medicine provider in Denver, Colorado, licensed in Colorado (30960) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark A Huun M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Mark Huun reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80220
- Reassigned Medicare billing, Colorado enrollment
- 47 clinicians in this Medicare group
Denver, CO 80247
- Reassigned Medicare billing, Colorado enrollment
- Medicare enrollment name: Colorado Permanente Medical Group PC
- 1,715 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 26
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mark Huun's NPI number?
The NPI number for Mark Huun is 1366579245. It was assigned to this individual provider in the NPPES registry on February 27, 2007.
Where is Mark Huun located?
Mark Huun practices at 1515 Wazee St Suite D, Denver, CO 80202. The listed phone number is (303) 534-9550.
What is Mark Huun's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Huun enrolled in Medicare?
Yes. Mark Huun is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mark Huun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Huun reassigns Medicare benefits to 2 organizations: Healthone Clinic Services - Primary Care LLC (Denver, CO) and Colorado Permanente Medical Group, P.C. (Denver, CO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Huun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Huun accept?
Health plans from Select Health list Mark Huun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mark Huun was last updated on November 19, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mark A Huun, M.D. · NPI 1366579245
Internal Medicine physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since February 27, 2007.
## Identity
- **NPI:** 1366579245 (Entity type: Individual)
- **Enumerated:** February 27, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 30960 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 1515 WAZEE ST, SUITE D, Denver, CO 80202-1478
- **Phone:** (303) 534-9550 · **Fax:** (720) 932-7805
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Healthone Clinic Services - Primary Care LLC (NPI 1518141761, Denver, CO); Colorado Permanente Medical Group, P.C. (NPI 1760599724, Denver, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tulane University School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** November 19, 2012
- **Other identifiers:** Medicare PIN COA109990 (CO); Medicare PIN CK10588 (CO); Medicare UPIN F13478 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1366579245) · Data from the CMS NPPES public registry.