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HANNAH CALLEN
NPI 1659810232
Dentist - Pediatric Dentistry in Greeley, CO

Active since February 16, 2017PECOS Enrolled
5100 W 20TH ST STE B, GREELEY, CO 80634(970) 373-4435(970) 771-8150 Get Directions Write a Review

NPPES record last updated: January 9, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 9, 2025, Jan 4, 2025, Oct 1, 2021 and 2 more (5 updates tracked since 2017).

About Hannah Callen NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HANNAH CALLEN (NPI 1659810232) is an individual pediatric dentistry provider in Greeley, Colorado, licensed in Colorado (DEN.00204880) and active in the NPI registry since February 2017. She is enrolled in Medicare PECOS and maintains a secondary practice location in Denver.

NPPES Registry Identity

NPI1659810232
Entity TypeIndividualFemale
Primary Taxonomy1223P0221X
Provider Legal NameHANNAH CALLEN
Location Address5100 W 20TH ST STE BGreeley, CO 80634-3051
Mailing Address5100 W 20th St Ste BGreeley, CO 80634-3051 · (970) 373-4435 · Fax (970) 771-8150
Phone(970) 373-4435
Fax(970) 771-8150
Sole ProprietorYes
Enumeration DateFebruary 16, 2017
Last NPPES UpdateJanuary 9, 20255 updates tracked since enumeration
NPPES CertifiedJanuary 9, 2025
✔ NPI 1659810232 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Pediatric DentistryDental Providers
Taxonomy Code1223P0221X
License✔ Licensed in CO · DEN.00204880
Definition
An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs.
5100 W 20TH ST STE B, Greeley, CO 80634
Open in Google Maps ↗

Secondary Practice Location 1

Location 1660 Bannock St # LDenver, CO 80204-4506 · Phone (303) 436-4949 · Fax (303) 602-8176

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Hannah Callen is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Hannah Callen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Denver Health And Hospital Authority
48 mi
General Practice
777 BANNOCK ST
Denver, CO 80204
  • Reassigned Medicare billing, Colorado enrollment
  • 2,259 clinicians in this Medicare group
NPI 1477569838 (303) 436-6000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80634 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$72.20 typical visit price
range $18.88 – $142.79
Typical copayment $18.05 (range $4.72 – $35.69)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LAUREN ANN ALLEN DMD
Dentist
5100 W 20TH ST STE B
GREELEY, CO 80634
Weld County (970) 373-4435
CHILDREN'S DENTISTRY LLC
Dentist (Pediatric Dentistry)
5100 W 20TH ST STE B
GREELEY, CO 80634
Weld County (970) 373-4435
CALLEN PEDIATRIC DENTAL, PLLC
Dentist (Pediatric Dentistry)
5100 W 20TH ST STE B
GREELEY, CO 80634
Weld County (970) 373-4435

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 Hannah Callen's NPI number?

The NPI number for Hannah Callen is 1659810232. It was assigned to this individual provider in the NPPES registry on February 16, 2017.

Where is Hannah Callen located?

Hannah Callen practices at 5100 W 20th St Ste B, Greeley, CO 80634. The listed phone number is (970) 373-4435.

What is Hannah Callen's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Pediatric Dentistry, with taxonomy code 1223P0221X.

Is Hannah Callen enrolled in Medicare?

Yes. Hannah Callen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Hannah Callen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hannah Callen reassigns Medicare benefits to Denver Health And Hospital Authority (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 Hannah Callen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Hannah Callen accept?

Health plans from Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 6 other insurers list Hannah Callen 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 Hannah Callen was last updated on January 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.