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DR. MARILYN GAIL LAJOIE M.D.
NPI 1144269127
General Practice in Helena, MT

Active since June 06, 2006PECOS Enrolled
5535 SUN HILL DR, HELENA, MT 59602(321) 287-5335 Get Directions Write a Review

NPPES record last updated: May 13, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 13, 2023, Nov 5, 2021 (2 updates tracked since 2021).

About Dr. Marilyn Gail Lajoie M.d. NPPES

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

DR. MARILYN GAIL LAJOIE M.D. (NPI 1144269127) is an individual general practice provider in Helena, Montana, licensed in Montana (87638) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1144269127
Entity TypeIndividualFemale
Primary Taxonomy208D00000X
Provider Legal NameDR. MARILYN GAIL LAJOIECredential: M.D.
Location Address5535 SUN HILL DRHelena, MT 59602-9443
Mailing Address5535 Sun Hill DrHelena, MT 59602-9443 · (321) 287-5335
Phone(321) 287-5335
Sole ProprietorYes
Enumeration DateJune 6, 2006
Last NPPES UpdateMay 13, 20232 updates tracked since enumeration
NPPES CertifiedMay 13, 2023
✔ NPI 1144269127 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in MT · 87638
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
Also ListedFamily Medicine · Adult MedicineTaxonomy 207QA0505X · License ME87692 (FL)
Also ListedInternal MedicineTaxonomy 207R00000X · License ME87692 (FL)
5535 SUN HILL DR, Helena, MT 59602
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Other Identifiers 1

Medicaid267062300FL

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Marilyn Gail Lajoie M.d. 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 Reassignments

3

Medicare enrollment records show Marilyn Lajoie reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Signify Health Medical Associates Of California, PC
806 mi
General Practice
505 MONTGOMERY ST, FL 10 & 11
San Francisco, CA 94111
  • Reassigned Medicare billing, California enrollment
  • 407 clinicians in this Medicare group
NPI 1124685169 (972) 715-3800
Signify Health Medical Associates, PLLC
1,247 mi
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Massachusetts and Montana enrollments
  • 203 clinicians in this Medicare group
NPI 1750845863 (972) 715-3800
Care Talk Health Fl PA
1,841 mi
Public Health & General Preventive Medicine
4849 RUGBY AVE
Bethesda, MD 20814
  • Reassigned Medicare billing, Montana enrollment
NPI 1477263077 (855) 702-6565

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

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 Marilyn Lajoie's NPI number?

The NPI number for Marilyn Lajoie is 1144269127. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Marilyn Lajoie located?

Marilyn Lajoie practices at 5535 Sun Hill Dr, Helena, MT 59602. The listed phone number is (321) 287-5335.

What is Marilyn Lajoie's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Marilyn Lajoie enrolled in Medicare?

Yes. Marilyn Lajoie is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Marilyn Lajoie's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Lajoie reassigns Medicare benefits to 3 organizations: Signify Health Medical Associates Of California, PC (San Francisco, CA), Signify Health Medical Associates, PLLC (Dallas, TX) and Care Talk Health Fl PA (Bethesda, MD). 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 Marilyn Lajoie'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 Marilyn Lajoie was last updated on May 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.