Barbara Mueller-Marquez, RNP
NPI 1902807795 · Adult Health Nurse Practitioner · Norwalk, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Barbara Mueller-Marquez, RNP is a Adult Health Nurse Practitioner provider in Norwalk, CT (NPI 1902807795).
Provider details
- NPI number
- 1902807795
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RNP
- Sex
- Female
- Sole proprietor
- No
- License
- 003733 (CT)
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
21 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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Dolutegravir Sodiumbrand: Tivicay | 54 |
| Darunavir | 52 |
| Amlodipine Besylate | 42 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 42 |
| Rosuvastatin Calcium | 35 |
| Dolutegravir/Rilpivirinebrand: Juluca | 28 |
| Etravirine | 28 |
| Ritonavir | 28 |
| Raltegravir Potassiumbrand: Isentress | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-03
- Last updated
- 2011-11-03
Frequently asked questions
- What is Barbara Mueller-Marquez's NPI number?
- Barbara Mueller-Marquez's National Provider Identifier (NPI) is 1902807795, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Mueller-Marquez's specialty?
- Barbara Mueller-Marquez is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Barbara Mueller-Marquez located?
- Barbara Mueller-Marquez's practice location on file with NPPES is 120 Connecticut Ave, Norwalk, CT 06854-1525.
- What is Barbara Mueller-Marquez's phone number?
- The practice phone number listed in the NPPES registry for Barbara Mueller-Marquez is (203) 899-1770.
- Does Barbara Mueller-Marquez accept Medicare?
- Barbara Mueller-Marquez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Barbara Mueller-Marquez's NPI active?
- Yes — Barbara Mueller-Marquez's NPI (1902807795) is active in the NPPES registry as of the last update on 2011-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.