MS. BARBARA J MUELLER-MARQUEZ (RNP) – Adult Health Nurse Practitioner, NPI 1902807795
Adult Health Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,219 NURSE PRACTITIONER in CT
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Provider Addresses for MS. BARBARA J MUELLER-MARQUEZ (RNP)
120, Connecticut Avenue, Norwalk, Fairfield County, Connecticut, 06854, United States
NORWALK, CT 068541525
Phone: (203) 899-1770
Fax: (203) 899-1769
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $149.
Total Amount is formed as General ($149) + Research ($0) + Ownership ($0) = $149.
Last reported payment date: 2023-03-30 • Largest payer in this snapshot: Gilead Sciences, Inc. ($125).
Total Amount
$149
General + Research + Ownership
Payments
2
Total payment records
General Amount
$149
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-03-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Gilead Sciences, Inc. | $125 |
| ABBVIE INC. | $24 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2008-10-10
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20081010000500 | I | Nurse Practitioner | CT | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 06854)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CT | |
| Clinical Social Worker | FL | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CT | |
| Internal Medicine | CT | |
| - | CT | |
| Internal Medicine | CT | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| Internal Medicine | CT | |
| Clinical Social Worker | CT | |
| Mental Health Counselor | CT |
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