MARY KRISTEN DEMORUELLE M.D.
NPI 1992900575
Internal Medicine - Rheumatology in Denver, CO
About Mary Kristen Demoruelle M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KRISTEN DEMORUELLE M.D. (NPI 1992900575) is an individual rheumatology provider in Denver, Colorado, licensed in Colorado (48030) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS and is a graduate of University Of Mississippi School Of Medicine (2007).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Mary Kristen Demoruelle 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 Mary Demoruelle reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80230
- Reassigned Medicare billing, Colorado enrollment
- 13 clinicians in this Medicare group
Denver, CO 80230
- Reassigned Medicare billing, Colorado enrollment
- 4,283 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80230 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.
Other Providers at the Same Location NPPES 14
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 Mary Demoruelle's NPI number?
The NPI number for Mary Demoruelle is 1992900575. It was assigned to this individual provider in the NPPES registry on June 15, 2007. The provider is also known as Mary K Demoruelle MD.
Where is Mary Demoruelle located?
Mary Demoruelle practices at 7111 E Lowry Blvd Ste 200, Denver, CO 80230. The listed phone number is (303) 394-2828.
What is Mary Demoruelle's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Mary Demoruelle enrolled in Medicare?
Yes. Mary Demoruelle 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 Mary Demoruelle's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Demoruelle reassigns Medicare benefits to 2 organizations: Denver Arthritis Clinic PC (Denver, CO) and University Physicians Incorporated (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 Mary Demoruelle's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Demoruelle accept?
Health plans from UnitedHealthcare list Mary Demoruelle 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 Mary Demoruelle was last updated on June 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
# Mary Kristen Demoruelle, M.D. · NPI 1992900575
Rheumatology physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since June 15, 2007.
## Identity
- **NPI:** 1992900575 (Entity type: Individual)
- **Enumerated:** June 15, 2007
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 48030 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 7111 E LOWRY BLVD STE 200, Denver, CO 80230-7360
- **Phone:** (303) 394-2828 · **Fax:** (303) 320-0242
## 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): Denver Arthritis Clinic PC (NPI 1225023427, Denver, CO); University Physicians Incorporated (NPI 1104284694, Denver, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Mississippi School Of Medicine, class of 2007
## Record status
- **NPPES last updated:** June 8, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1992900575) · Data from the CMS NPPES public registry.