KAREN M GUZZETTA M.D.
NPI 1558446104
Internal Medicine in Denver, CO
About Karen M Guzzetta M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN M GUZZETTA M.D. (NPI 1558446104) is an individual internal medicine provider in Denver, Colorado, licensed in Colorado (37553) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (1996).
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
Karen M Guzzetta 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 Reassignment
Medicare enrollment records show Karen Guzzetta reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Denver, CO 80210
- Reassigned Medicare billing, Colorado enrollment
- 733 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 3
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 80210 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80210
DENVER, CO 80210
DENVER, CO 80210
DENVER, CO 80210
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 Karen Guzzetta's NPI number?
The NPI number for Karen Guzzetta is 1558446104. It was assigned to this individual provider in the NPPES registry on October 25, 2006.
Where is Karen Guzzetta located?
Karen Guzzetta practices at 2525 S Downing St Porter Pre-Surgical Evaluation, Denver, CO 80210. The listed phone number is (303) 765-6892.
What is Karen Guzzetta's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Karen Guzzetta enrolled in Medicare?
Yes. Karen Guzzetta 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 organization bills Medicare for Karen Guzzetta's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Guzzetta reassigns Medicare benefits to Portercare Adventist Health System (Denver, CO). The 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 Karen Guzzetta's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Guzzetta accept?
Health plans from Select Health list Karen Guzzetta 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 Karen Guzzetta was last updated on September 14, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Karen M Guzzetta, M.D. · NPI 1558446104
Internal Medicine physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since October 25, 2006.
## Identity
- **NPI:** 1558446104 (Entity type: Individual)
- **Enumerated:** October 25, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 37553 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 2525 S DOWNING ST, PORTER PRE-SURGICAL EVALUATION, Denver, CO 80210-5817
- **Phone:** (303) 765-6892
## 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:** Portercare Adventist Health System (NPI 1194680702, Denver, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 1996
## Record status
- **NPPES last updated:** September 14, 2011
- **Other identifiers:** Medicaid 40427846 (CO); Medicare PIN C363628; Medicare UPIN H08432
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Source: [NPI Profile](https://npiprofile.com/npi/1558446104) · Data from the CMS NPPES public registry.