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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARISSA LEE GAUTHIER MD
NPI 1205463627
Obstetrics & Gynecology in Baton Rouge, LA

Active since March 25, 2020PECOS EnrolledAccepts Medicare Assignment
500 RUE DE LA VIE ST STE 100, BATON ROUGE, LA 70817(225) 201-2000(225) 201-2112 Get Directions Write a Review

NPPES record last updated: October 14, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 14, 2026, Mar 25, 2020 (2 updates tracked since 2020).

About Marissa Lee Gauthier Md NPPES

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

MARISSA LEE GAUTHIER MD (NPI 1205463627) is an individual obstetrics & gynecology provider in Baton Rouge, Louisiana, licensed in Louisiana (351116) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Elk Grove, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1205463627
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMARISSA LEE GAUTHIERCredential: MD
Location Address500 RUE DE LA VIE ST STE 100Baton Rouge, LA 70817-5128
Mailing Address500 Rue De La Vie St Ste 100Baton Rouge, LA 70817-5128 · (225) 201-2000 · Fax (225) 201-2112
Phone(225) 201-2000
Fax(225) 201-2112
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMarch 25, 2020
Last NPPES UpdateOctober 14, 20262 updates tracked since enumeration
NPPES CertifiedOctober 14, 2026
✔ NPI 1205463627 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in LA · 351116✔ Licensed in CA · 95758
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
500 RUE DE LA VIE ST STE 100, Baton Rouge, LA 70817
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Secondary Practice Location 1

Location 18170 Laguna Blvd Ste 304Elk Grove, CA 95758-7903 · Phone (916) 691-5996 · Fax (916) 691-5905

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

Marissa Lee Gauthier Md 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 ID2264854058
PECOS Enrollment IDI20241021000831
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 Marissa Gauthier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Valley Medical Foundation
1,781 mi
Multi-Specialty
600 COFFEE RD
Modesto, CA 95355
  • Reassigned Medicare billing, California enrollment
  • 3,056 clinicians in this Medicare group
NPI 1669846986 (209) 524-1211

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 70817 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
$124.60 typical visit price
range $53.43 – $164.73
Typical copayment $31.15 (range $13.35 – $41.18)
Most-billed visit code 99204
Established Patient
$67.06 typical visit price
range $16.64 – $133.62
Typical copayment $16.76 (range $4.16 – $33.40)
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 6

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

MORGAN BANKSTON BROUSSARD M.D.
Obstetrics & Gynecology
500 RUE DE LA VIE ST STE 100
BATON ROUGE, LA 70817
East Baton Rouge Parish (225) 201-2000
LORI M. GENTILE MD
Obstetrics & Gynecology
500 RUE DE LA VIE ST STE 100
BATON ROUGE, LA 70817
East Baton Rouge Parish (225) 201-2000
MATHEW ROOT
Obstetrics & Gynecology
500 RUE DE LA VIE ST STE 100
BATON ROUGE, LA 70817
East Baton Rouge Parish (225) 201-2000
NICOLETTE STELTER MD
Obstetrics & Gynecology
500 RUE DE LA VIE ST STE 100
BATON ROUGE, LA 70817
East Baton Rouge Parish (225) 201-2000
EMILY HODGES STEPHENSON MD
Obstetrics & Gynecology
500 RUE DE LA VIE ST STE 100
BATON ROUGE, LA 70817
East Baton Rouge Parish (225) 201-2000
CATHERINE ANN JOHNSON MD
Obstetrics & Gynecology
500 RUE DE LA VIE ST STE 100
BATON ROUGE, LA 70817
East Baton Rouge Parish (512) 963-4796

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 Marissa Gauthier's NPI number?

The NPI number for Marissa Gauthier is 1205463627. It was assigned to this individual provider in the NPPES registry on March 25, 2020.

Where is Marissa Gauthier located?

Marissa Gauthier practices at 500 Rue De La Vie St Ste 100, Baton Rouge, LA 70817. The listed phone number is (225) 201-2000.

What is Marissa Gauthier's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Marissa Gauthier enrolled in Medicare?

Yes. Marissa Gauthier 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 Marissa Gauthier's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Gauthier reassigns Medicare benefits to Sutter Valley Medical Foundation (Modesto, CA). 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 Marissa Gauthier'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 Marissa Gauthier was last updated on October 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.