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MS. ISABELLE ANTONIA UNGER DNP, ARNP, FNP-C
NPI 1427832724
Nurse Practitioner - Family in Burlington, VT

Active since August 21, 2023PECOS EnrolledAccepts Medicare Assignment
111 COLCHESTER AVE, BURLINGTON, VT 05401(802) 847-8400 Get Directions Write a Review

NPPES record last updated: September 19, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 19, 2025, Aug 21, 2023 (2 updates tracked since 2023).

About Ms. Isabelle Antonia Unger Dnp, Arnp, Fnp-c NPPES

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

MS. ISABELLE ANTONIA UNGER DNP, ARNP, FNP-C (NPI 1427832724) is an individual family provider in Burlington, Vermont, licensed in Vermont (101.0137169) and active in the NPI registry since August 2023. She is enrolled in Medicare PECOS, is affiliated with Univ. Of Vermont - Fletcher Allen Health Care, and is a graduate of Other (2023).

NPPES Registry Identity

NPI1427832724
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMS. ISABELLE ANTONIA UNGERCredential: DNP, ARNP, FNP-C
Location Address111 COLCHESTER AVEBurlington, VT 05401-1473
Mailing Address111 Colchester AveBurlington, VT 05401-1473
Phone(802) 847-8400
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateAugust 21, 2023
Last NPPES UpdateSeptember 19, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 19, 2025
✔ NPI 1427832724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in VT · 101.0137169
111 COLCHESTER AVE, Burlington, VT 05401
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Ms. Isabelle Antonia Unger Dnp, Arnp, Fnp-c 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.

PECOS PAC ID7810438504
PECOS Enrollment IDI20240921000031
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 Isabelle Unger reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Vermont Medical Center Inc
Same address
Internal Medicine
111 COLCHESTER AVE
Burlington, VT 05401
  • Reassigned Medicare billing, Vermont enrollment
  • 1,643 clinicians in this Medicare group
NPI 1659309615 (802) 847-0000

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
28 services28 patients
Biopsy and aspiration of bone marrow sample for diagnosis 38222
A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.
15 services15 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
15 services14 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Univ. Of Vermont - Fletcher Allen Health Care

Acute Care Hospitals · Burlington, VT
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number470003
Location111 Colchester AveBurlington, VT 05401 · Chittenden County
Emergency services Birthing friendly

Northwestern Medical Center Inc

Acute Care Hospitals · Saint Albans, VT
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number470024
Location133 Fairfield StreetSaint Albans, VT 05478 · Franklin County
Emergency services Birthing friendly

Porter Hospital, Inc

Critical Access Hospitals · Middlebury, VT
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number471307
Location115 Porter DriveMiddlebury, VT 05753 · Addison County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 05401 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
$85.89 typical visit price
range $55.80 – $168.48
Typical copayment $21.47 (range $13.95 – $42.12)
Most-billed visit code 99203
Established Patient
$98.40 typical visit price
range $18.08 – $137.84
Typical copayment $24.60 (range $4.52 – $34.46)
Most-billed visit code 99214
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 20

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

ELENA KOZAKEWICH
Internal Medicine (Pulmonary Disease)
111 COLCHESTER AVE, UVM MEDICAL CENTER, DEPT OF INTERNAL MEDICINE, 222WP2
BURLINGTON, VT 05401
Chittenden County (802) 847-2700
RICHARD BOHLING CAROZZA MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-4589
ANDREW HUY NGUYEN MD
Radiology (Diagnostic Radiology)
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-0000
DR. KELLY CURTIS BLANCHET MD
Pediatrics
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-2345
LINDSAY ANNE CALDARONE MD
Student in an Organized Health Care Education/Training Program
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-2345
SHAWN LANSING
Student in an Organized Health Care Education/Training Program
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-2345
HANNA S LOVING PHD
Pathology (Clinical Laboratory Director, Non-physician)
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-5121
KAITLYN MARIE DILLON DNP, APRN, FNP-C
Nurse Practitioner
111 COLCHESTER AVE
BURLINGTON, VT 05401
Chittenden County (802) 847-0000

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 Isabelle Unger's NPI number?

The NPI number for Isabelle Unger is 1427832724. It was assigned to this individual provider in the NPPES registry on August 21, 2023.

Where is Isabelle Unger located?

Isabelle Unger practices at 111 Colchester Ave, Burlington, VT 05401. The listed phone number is (802) 847-8400.

What is Isabelle Unger's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Isabelle Unger enrolled in Medicare?

Yes. Isabelle Unger 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 Isabelle Unger's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Isabelle Unger reassigns Medicare benefits to University Of Vermont Medical Center Inc (Burlington, VT). 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 Isabelle Unger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Isabelle Unger accept?

Health plans from Anthem Blue Cross and Blue Shield list Isabelle Unger 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.

Is Isabelle Unger affiliated with any hospitals?

According to CMS data, Isabelle Unger is affiliated with Univ. Of Vermont - Fletcher Allen Health Care, Northwestern Medical Center Inc and Porter Hospital, Inc.

When was this NPI record last updated?

The NPPES record for Isabelle Unger was last updated on September 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.