MRS. COLLEEN DIFERDINANDO APN
NPI 1558946533
Nurse Practitioner - Family in Denver, CO
About Mrs. Colleen Diferdinando Apn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. COLLEEN DIFERDINANDO APN (NPI 1558946533) is an individual family provider in Denver, Colorado, licensed in Colorado (APN.0995334-NP) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Thornton, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Mrs. Colleen Diferdinando Apn 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
3Medicare enrollment records show Colleen Diferdinando reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Westminster, CO 80021
- Reassigned Medicare billing, Colorado enrollment
- 31 clinicians in this Medicare group
Highlands Ranch, CO 80126
- Reassigned Medicare billing, Colorado enrollment
- 205 clinicians in this Medicare group
Pembroke Pines, FL 33027
- Reassigned Medicare billing, Colorado enrollment
- 49 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 7
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 80238 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
DENVER, CO 80238
DENVER, CO 80238
DENVER, CO 80238
DENVER, CO 80238
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 Colleen Diferdinando's NPI number?
The NPI number for Colleen Diferdinando is 1558946533. It was assigned to this individual provider in the NPPES registry on March 11, 2021.
Where is Colleen Diferdinando located?
Colleen Diferdinando practices at 8354 E Northfield Blvd Ste 3700, Denver, CO 80238. The listed phone number is (866) 849-0692.
What is Colleen Diferdinando's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Colleen Diferdinando enrolled in Medicare?
Yes. Colleen Diferdinando 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 Colleen Diferdinando's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Colleen Diferdinando reassigns Medicare benefits to 3 organizations: Rocky Mountain Primary Care , PC (Westminster, CO), The Little Clinic Of Colorado, LLC (Highlands Ranch, CO) and Devoted Medical Group Professional Corporation (Pembroke Pines, FL). 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 Colleen Diferdinando's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Colleen Diferdinando accept?
Health plans from Select Health list Colleen Diferdinando 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 Colleen Diferdinando was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mrs. Colleen Diferdinando, APN · NPI 1558946533
Family physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since March 11, 2021.
## Identity
- **NPI:** 1558946533 (Entity type: Individual)
- **Enumerated:** March 11, 2021
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** APN.0995334-NP (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 8354 E NORTHFIELD BLVD STE 3700, Denver, CO 80238-3131
- **Phone:** (866) 849-0692
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Rocky Mountain Primary Care , PC (NPI 1215981634, Westminster, CO); The Little Clinic Of Colorado, LLC (NPI 1538354568, Highlands Ranch, CO); Devoted Medical Group Professional Corporation (NPI 1245838168, Pembroke Pines, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** August 6, 2026
- **Other identifiers:** Other RXN.0104615-NP (CO); Other APN.0995334-NP (CO); Other RN.1627319 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1558946533) · Data from the CMS NPPES public registry.