Stephanie Nellesen, FNP
NPI 1003362021 · Family Nurse Practitioner · Saint Louis, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Nellesen, FNP is a Family Nurse Practitioner provider in Saint Louis, MO (NPI 1003362021).
Provider details
- NPI number
- 1003362021
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2016022548 (MO)
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 tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 30 | 15 |
| Lisinopril | 26 | 13 |
| Metoprolol Succinate | 23 | — |
| Furosemide | 21 | 11 |
| Metformin Hclbrand: Metformin Hcl Er | 19 | — |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 18 | — |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-08-30
- Last updated
- 2018-11-16
Frequently asked questions
- What is Stephanie Nellesen's NPI number?
- Stephanie Nellesen's National Provider Identifier (NPI) is 1003362021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Nellesen's specialty?
- Stephanie Nellesen is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephanie Nellesen located?
- Stephanie Nellesen's practice location on file with NPPES is 621 S New Ballas Rd Ste 189a, Saint Louis, MO 63141-8255.
- What is Stephanie Nellesen's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Nellesen is (314) 251-6335.
- Does Stephanie Nellesen accept Medicare?
- Stephanie Nellesen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Nellesen's NPI active?
- Yes — Stephanie Nellesen's NPI (1003362021) is active in the NPPES registry as of the last update on 2018-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.