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DR. AMBER M MESSIER-GIERI MD
NPI 1184763179
Pediatrics - Neonatal-Perinatal Medicine in Boise, ID

Active since February 06, 2007PECOS Enrolled
1055 N CURTIS RD, BOISE, ID 83706(208) 302-4600(208) 302-4655 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 23, 2026, Mar 24, 2026, May 3, 2021 and 1 more (4 updates tracked since 2019).

About Dr. Amber M Messier-gieri Md NPPES

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

DR. AMBER M MESSIER-GIERI MD (NPI 1184763179) is an individual neonatal-perinatal medicine provider in Boise, Idaho, licensed in Idaho (8671496) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boise, and is a graduate of University Of New Mexico School Of Medicine (2006).

NPPES Registry Identity

NPI1184763179
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameDR. AMBER M MESSIER-GIERICredential: MD
Location Address1055 N CURTIS RDBoise, ID 83706-1309
Mailing AddressPo Box 190930Boise, ID 83719-0930 · (208) 367-5170 · Fax (208) 367-5180
Phone(208) 302-4600
Fax(208) 302-4655
Sole ProprietorNo
Medical School CMSUniversity Of New Mexico School Of MedicineGraduated 2006
Enumeration DateFebruary 6, 2007
Last NPPES UpdateJuly 23, 20264 updates tracked since enumeration
NPPES CertifiedJuly 23, 2026
✔ NPI 1184763179 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
Licenses✔ Licensed in ID · 8671496✔ Licensed in CO · DR.0061730
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
1055 N CURTIS RD, Boise, ID 83706
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Secondary Practice Location 1

Location 1190 E Bannock StBoise, ID 83712-6241 · Phone (208) 381-2088 · Fax (208) 381-2893

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare, Select Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Amber M Messier-gieri Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9335395904
PECOS Enrollment IDI20260407003231
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 Reassignments

2

Medicare enrollment records show Amber Messier-gieri reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St Lukes Clinic-Treasure Valley LLC
3.2 mi
Family Medicine
190 E BANNOCK ST
Boise, ID 83712
  • Reassigned Medicare billing, Idaho enrollment
  • 1,312 clinicians in this Medicare group
NPI 1326336058 (208) 381-2222
Intermountain Medical Group Denver, LLC
628 mi
Neurology
380 EMPIRE RD STE 120
Lafayette, CO 80026
  • Reassigned Medicare billing, Colorado enrollment
  • 1,270 clinicians in this Medicare group
NPI 1669122925 (303) 673-1390

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.

DR. MAUREEN A NEWMAN M.D.
Family Medicine (Hospice and Palliative Medicine)
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 302-5480
JESSICA A EVERT MD
Family Medicine
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 367-7350
KRISTIE KAES LCSW
Social Worker (Clinical)
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 367-2121
DR. MICHEAL GEORGE ADONDAKIS MD
Radiology (Diagnostic Radiology)
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 367-2121
JACQUELINE STEAN
Nurse Practitioner
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 367-3221
DR. JAMES ROBERT POLK MD
Internal Medicine (Rheumatology)
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 367-3104
MATTHEW JUDD D.O.
Emergency Medicine
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 322-1730
IAN MICHAEL WOOD PHARM D
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
1055 N CURTIS RD
BOISE, ID 83706
Ada County (208) 367-2166

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 Amber Messier-gieri's NPI number?

The NPI number for Amber Messier-gieri is 1184763179. It was assigned to this individual provider in the NPPES registry on February 6, 2007.

Where is Amber Messier-gieri located?

Amber Messier-gieri practices at 1055 N Curtis Rd, Boise, ID 83706. The listed phone number is (208) 302-4600.

What is Amber Messier-gieri's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Amber Messier-gieri enrolled in Medicare?

Yes. Amber Messier-gieri is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Amber Messier-gieri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Amber Messier-gieri reassigns Medicare benefits to 2 organizations: St Lukes Clinic-Treasure Valley LLC (Boise, ID) and Intermountain Medical Group Denver, LLC (Lafayette, CO). 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 Amber Messier-gieri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Amber Messier-gieri accept?

Health plans from Molina Healthcare and Select Health list Amber Messier-gieri 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 Amber Messier-gieri was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.