Barbara J. Mueller-Marquez, RNP
Adult Health Nurse Practitioner · Norwalk, CT
Barbara J. Mueller-Marquez, RNP is an adult health nurse practitioner with a practice address in Norwalk, Connecticut, and NPI 1902807795, issued on Aug 3, 2005. Check the license (Connecticut 003733, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Barbara J. Mueller-Marquez
- Credential
- RNP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- 003733 CT
Self-reported in NPPES; status is on the state search - Practice location
- 120 Connecticut Ave, Norwalk, CT 06854
- Phone
- (203) 899-1770
- Enumerated
- Aug 3, 2005
- Record last updated
- Nov 3, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (203) 899-1769
- Medicare enrollment
- Enrolled (PECOS I20081010000500); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 628 in Connecticut → Look up another NPI →
Also registered at 120 Connecticut Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael FotiInternal Medicine Physician1871053330
Verify Barbara J. Mueller-Marquez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 003733Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
651 Medicare Part D claims for 28 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Tivicay54 claims
- Darunavir52 claims
- Amlodipine Besylate42 claims
- Descovy42 claims
- Rosuvastatin Calcium35 claims
- Etravirine28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Norwalk Community Health Center IncNorwalk, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Barbara J. Mueller-Marquez among 628 adult health nurse practitioner records in Connecticut
Barbara J. Mueller-Marquez, RNP is one of 628 adult health nurse practitioner records with a practice address in Connecticut. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1993 · median 2013 among the 332 with a school on file
- Record last updated2011 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in Connecticut
There are 628 adult health nurse practitioner records in Connecticut.
All 628 in Connecticut → Every provider in Norwalk → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Jennifer Long, APRNNorwalk, CT 068561336220722
- Jennifer Calderon Baharian, AGPCNP-BCNorwalk, CT 068511497698914
- Brenda Dixon, APRN, WHNPNorwalk, CT 068511144378738
- Meagan Sullivan, APRNNorwalk, CT 068511477713956
- Alexa CapalboNorwalk, CT 068501598417537
- Juanita Castillo, DNP, AGPCNP-BC CDCESNorwalk, CT 068501972236123
- Diana Donovan, NPNorwalk, CT 068501649358342
- Margaret Haggerty, APRNNorwalk, CT 068501558584078
Common questions
What is Barbara J. Mueller-Marquez, RNP's NPI number?
Barbara J. Mueller-Marquez, RNP's National Provider Identifier (NPI) is 1902807795, issued on Aug 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Barbara J. Mueller-Marquez, RNP located?
The NPPES record lists a practice address at 120 Connecticut Ave, Norwalk, CT, 06854. Phone: (203) 899-1770. Providers update this record themselves, so call before visiting.
How can I verify Barbara J. Mueller-Marquez, RNP's license?
NPPES lists Connecticut license number 003733, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Barbara J. Mueller-Marquez, RNP prescribe under Medicare Part D?
In 2024, Barbara J. Mueller-Marquez, RNP had 651 Medicare Part D claims for 28 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.