MARY DAHLEN APRN
NPI 1235358003
Nurse Practitioner in Lake Charles, LA
About Mary Dahlen Aprn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY DAHLEN APRN (NPI 1235358003) is an individual nurse practitioner in Lake Charles, Louisiana, licensed in Louisiana (081161) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted 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
Mary Dahlen Aprn 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.
Medicare Billing Reassignments
10Medicare enrollment records show Mary Dahlen reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lake Charles, LA 70601
- Reassigned Medicare billing, Louisiana enrollment
- 167 clinicians in this Medicare group
Lake Charles, LA 70601
- Reassigned Medicare billing, Louisiana enrollment
- 119 clinicians in this Medicare group
Lake Charles, LA 70605
- Reassigned Medicare billing, Louisiana enrollment
- 314 clinicians in this Medicare group
Sulphur, LA 70663
- Reassigned Medicare billing, Louisiana enrollment
- 96 clinicians in this Medicare group
Jennings, LA 70546
- Reassigned Medicare billing, Louisiana enrollment
- 76 clinicians in this Medicare group
Leesville, LA 71446
- Reassigned Medicare billing, Louisiana enrollment
- 57 clinicians in this Medicare group
Abbeville, LA 70510
- Reassigned Medicare billing, Louisiana enrollment
- 63 clinicians in this Medicare group
Hoover, AL 35216
- Reassigned Medicare billing, Louisiana enrollment
- 163 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Louisiana enrollment
- 122 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Louisiana enrollment
- 214 clinicians in this Medicare group
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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70607 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
LAKE CHARLES, LA 70607
LAKE CHARLES, LA 70607
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 Mary Dahlen's NPI number?
The NPI number for Mary Dahlen is 1235358003. It was assigned to this individual provider in the NPPES registry on April 24, 2007.
Where is Mary Dahlen located?
Mary Dahlen practices at 1000 Walters St, Lake Charles, LA 70607. The listed phone number is (337) 475-8100.
What is Mary Dahlen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Mary Dahlen enrolled in Medicare?
Yes. Mary Dahlen 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 organizations bill Medicare for Mary Dahlen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Dahlen reassigns Medicare benefits to 10 organizations: Professional Emergency Medicine Management -- Lake Charles LLC (Lake Charles, LA), Sound Physicians Emergency Medicine Of Louisiana Inc (Lake Charles, LA), Calcasieu Urgent Care LLC (Lake Charles, LA), Calcasieu Cameron Emergency Physician Group LLC (Sulphur, LA), Jefferson Davis Emergency Group LLC (Jennings, LA) and 5 more organizations, listed in the Medicare section above. 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 Mary Dahlen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Dahlen accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and CHRISTUS Health Plan list Mary Dahlen 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 Mary Dahlen was last updated on December 27, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Mary Dahlen, APRN · NPI 1235358003
Nurse Practitioner physician in Lake Charles, Louisiana. Individual provider, active in the CMS NPPES registry since April 24, 2007.
## Identity
- **NPI:** 1235358003 (Entity type: Individual)
- **Enumerated:** April 24, 2007
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 081161 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 WALTERS ST, Lake Charles, LA 70607-4647
- **Phone:** (337) 475-8100
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Professional Emergency Medicine Management -- Lake Charles LLC (NPI 1023430766, Lake Charles, LA); Sound Physicians Emergency Medicine Of Louisiana Inc (NPI 1396253407, Lake Charles, LA); Calcasieu Urgent Care LLC (NPI 1467715490, Lake Charles, LA); Calcasieu Cameron Emergency Physician Group LLC (NPI 1699167478, Sulphur, LA); Jefferson Davis Emergency Group LLC (NPI 1043289572, Jennings, LA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** December 27, 2016
- **Other identifiers:** Medicaid 1022799 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1235358003) · Data from the CMS NPPES public registry.