Mary Dahlen, APRN
NPI 1235358003 · Nurse Practitioner · Lake Charles, LA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Dahlen, APRN is a Nurse Practitioner provider in Lake Charles, LA (NPI 1235358003).
Provider details
- NPI number
- 1235358003
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 081161 (LA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
11 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 11 | $142 |
Typical Medicare-allowed amounts for these services range $142–$142 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-24
- Last updated
- 2016-12-27
Frequently asked questions
- What is Mary Dahlen's NPI number?
- Mary Dahlen's National Provider Identifier (NPI) is 1235358003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Dahlen's specialty?
- Mary Dahlen is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Dahlen located?
- Mary Dahlen's practice location on file with NPPES is 1000 Walters St, Lake Charles, LA 70607-4647.
- What is Mary Dahlen's phone number?
- The practice phone number listed in the NPPES registry for Mary Dahlen is (337) 475-8100.
- Does Mary Dahlen accept Medicare?
- Mary Dahlen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Dahlen's NPI active?
- Yes — Mary Dahlen's NPI (1235358003) is active in the NPPES registry as of the last update on 2016-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.