Sylvia Mcmahan, MSN, FNP-C
NPI 1811481302 · Family Nurse Practitioner · Corpus Christi, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sylvia Mcmahan, MSN, FNP-C is a Family Nurse Practitioner provider in Corpus Christi, TX (NPI 1811481302).
Provider details
- NPI number
- 1811481302
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- AP137765 (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
8 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 208 | 78 |
| Amlodipine Besylate | 182 | 66 |
| Lisinopril | 175 | 71 |
| Semaglutidebrand: Ozempic | 138 | 32 |
| Levothyroxine Sodium | 131 | 46 |
| Metformin Hcl | 128 | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,246 across 48 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
- 2018-06-18
- Last updated
- 2018-06-18
Frequently asked questions
- What is Sylvia Mcmahan's NPI number?
- Sylvia Mcmahan's National Provider Identifier (NPI) is 1811481302, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvia Mcmahan's specialty?
- Sylvia Mcmahan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sylvia Mcmahan located?
- Sylvia Mcmahan's practice location on file with NPPES is 5833 Spohn Dr Ste 101b, Corpus Christi, TX 78414-4136.
- What is Sylvia Mcmahan's phone number?
- The practice phone number listed in the NPPES registry for Sylvia Mcmahan is (361) 993-2020.
- Does Sylvia Mcmahan accept Medicare?
- Sylvia Mcmahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sylvia Mcmahan's NPI active?
- Yes — Sylvia Mcmahan's NPI (1811481302) is active in the NPPES registry as of the last update on 2018-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.