JILLIAN MARGARET GRZESKIEWICZ APRN
NPI 1265170112
Nurse Practitioner - Psychiatric/Mental Health in Gunnison, CO
About Jillian Margaret Grzeskiewicz Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JILLIAN MARGARET GRZESKIEWICZ APRN (NPI 1265170112) is an individual psychiatric/mental health provider in Gunnison, Colorado, licensed in Colorado (C-APN.0100340-C-NP) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
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
Jillian Margaret Grzeskiewicz Aprn 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 Jillian Grzeskiewicz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Gunnison, CO 81230
- Reassigned Medicare billing, Colorado enrollment
- 97 clinicians in this Medicare group
Grand Junction, CO 81501
- Reassigned Medicare billing, Colorado enrollment
- 21 clinicians in this Medicare group
Charleston, SC 29414
- Reassigned Medicare billing, South Carolina enrollment
- Medicare enrollment name: University Medical Associates Of The Medical University Of South Carol
- 2,594 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 2
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 81230 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GUNNISON, CO 81230
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 Jillian Grzeskiewicz's NPI number?
The NPI number for Jillian Grzeskiewicz is 1265170112. It was assigned to this individual provider in the NPPES registry on May 21, 2022.
Where is Jillian Grzeskiewicz located?
Jillian Grzeskiewicz practices at 710 N Taylor St, Gunnison, CO 81230. The listed phone number is (970) 252-3200.
What is Jillian Grzeskiewicz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Jillian Grzeskiewicz enrolled in Medicare?
Yes. Jillian Grzeskiewicz 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 Jillian Grzeskiewicz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jillian Grzeskiewicz reassigns Medicare benefits to 3 organizations: Southwest Colorado Mental Health Center, Inc (Gunnison, CO), Colorado West Psychiatric Hospital, Inc. (Grand Junction, CO) and University Medical Associates (Charleston, SC). 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 Jillian Grzeskiewicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jillian Grzeskiewicz accept?
Health plans from Select Health list Jillian Grzeskiewicz 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 Jillian Grzeskiewicz was last updated on February 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Jillian Margaret Grzeskiewicz, APRN · NPI 1265170112
Psychiatric/Mental Health physician in Gunnison, Colorado. Individual provider, active in the CMS NPPES registry since May 21, 2022.
## Identity
- **NPI:** 1265170112 (Entity type: Individual)
- **Enumerated:** May 21, 2022
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** C-APN.0100340-C-NP (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 710 N TAYLOR ST, Gunnison, CO 81230-2244
- **Phone:** (970) 252-3200 · **Fax:** (970) 259-2438
## 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): Southwest Colorado Mental Health Center, Inc (NPI 1326877176, Gunnison, CO); Colorado West Psychiatric Hospital, Inc. (NPI 1275680837, Grand Junction, CO); University Medical Associates (NPI 1760413835, Charleston, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** February 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1265170112) · Data from the CMS NPPES public registry.