TANJA GRUBJESIC
NPI 1568964666
Counselor - Professional in Littleton, CO
About Tanja Grubjesic NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TANJA GRUBJESIC (NPI 1568964666) is an individual professional provider in Littleton, Colorado, licensed in Colorado (LPC.0014834) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses 2
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
Tanja Grubjesic 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 Tanja Grubjesic reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Littleton, CO 80120
- Reassigned Medicare billing, Colorado enrollment
- 331 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.
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.
LITTLETON, CO 80120
LITTLETON, CO 80120
LITTLETON, CO 80120
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 Tanja Grubjesic's NPI number?
The NPI number for Tanja Grubjesic is 1568964666. It was assigned to this individual provider in the NPPES registry on March 5, 2018.
Where is Tanja Grubjesic located?
Tanja Grubjesic practices at 5500 S Sycamore St, Littleton, CO 80120. The listed phone number is (303) 730-8858.
What is Tanja Grubjesic's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.
Is Tanja Grubjesic enrolled in Medicare?
Yes. Tanja Grubjesic 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 Tanja Grubjesic's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tanja Grubjesic reassigns Medicare benefits to Arapahoe Mental Health Center, Inc (Littleton, 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 Tanja Grubjesic's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Tanja Grubjesic was last updated on October 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Tanja Grubjesic · NPI 1568964666
Professional provider in Littleton, Colorado. Individual provider, active in the CMS NPPES registry since March 5, 2018.
## Identity
- **NPI:** 1568964666 (Entity type: Individual)
- **Enumerated:** March 5, 2018
- **Primary specialty:** Counselor - Professional · taxonomy 101YP2500X
- **State license:** LPC.0014834 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 5500 S SYCAMORE ST, Littleton, CO 80120-8201
- **Phone:** (303) 730-8858
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Arapahoe Mental Health Center, Inc (NPI 1386250330, Littleton, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** October 10, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1568964666) · Data from the CMS NPPES public registry.