Mariah Simms, FNP
NPI 1235829391 · Family Nurse Practitioner · Austin, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariah Simms, FNP is a Family Nurse Practitioner provider in Austin, TX (NPI 1235829391).
Provider details
- NPI number
- 1235829391
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 1108822 (TX)
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 tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$54 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-05-11
- Last updated
- 2023-05-11
- Certified
- 2023-05-11
Frequently asked questions
- What is Mariah Simms's NPI number?
- Mariah Simms's National Provider Identifier (NPI) is 1235829391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariah Simms's specialty?
- Mariah Simms is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariah Simms located?
- Mariah Simms's practice location on file with NPPES is 12201 Renfert Way Ste 250, Austin, TX 78758-5354.
- What is Mariah Simms's phone number?
- The practice phone number listed in the NPPES registry for Mariah Simms is (512) 994-2662.
- Does Mariah Simms accept Medicare?
- Mariah Simms is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariah Simms's NPI active?
- Yes — Mariah Simms's NPI (1235829391) is active in the NPPES registry as of the last update on 2023-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.