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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DUC BUI NGUYEN MD
NPI 1033679899
Internal Medicine - Infectious Disease in West Haven, CT

Active since March 20, 2019PECOS Enrolled
950 CAMPBELL AVE, WEST HAVEN, CT 06516(203) 932-5711 Get Directions Write a Review

NPPES record last updated: August 19, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Aug 19, 2026, Mar 20, 2019 (2 updates tracked since 2019).

About Duc Bui Nguyen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DUC BUI NGUYEN MD (NPI 1033679899) is an individual infectious disease provider in West Haven, Connecticut, licensed in Connecticut (77272) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1033679899
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDUC BUI NGUYENCredential: MD
Location Address950 CAMPBELL AVEWest Haven, CT 06516-2770
Mailing Address950 Campbell AveWest Haven, CT 06516-2770 · (230) 932-5711
Phone(203) 932-5711
Sole ProprietorNo
Enumeration DateMarch 20, 2019
Last NPPES UpdateAugust 19, 20262 updates tracked since enumeration
NPPES CertifiedAugust 19, 2026
✔ NPI 1033679899 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CT · 77272
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
950 CAMPBELL AVE, West Haven, CT 06516
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Duc Bui Nguyen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06516 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LESLIE TANQUILUT PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
950 CAMPBELL AVE, PHARMACY SERVICE (119)
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
NICHOLAS ANDREW VISSICCHIO PH.D.
Psychologist (Clinical)
950 CAMPBELL AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
DEVON MACKAY LMSW
Social Worker (Clinical)
950 CAMPBELL AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
MR. JAMES MICHAEL ALEKSUNES
Counselor
950 CAMPBELL AVE, MS 122V
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
MRS. TRACEY PASCARELLA RD
Dietitian, Registered
950 CAMPBELL AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
DR. ANTHONY JAMES LISI D.C.
Chiropractor
950 CAMPBELL AVE, BUILDING 2, FLOOR 4
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
MS. EVANGELINE BENOIT
Nurse Anesthetist, Certified Registered
950 CAMPBELL AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (203) 932-5711
MS. MELISSA ANN SIMONE LCSW
Social Worker (Clinical)
950 CAMPBELL AVE
WEST HAVEN, CT 06516
South Central Connecticut Planning Region (860) 694-4875

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Duc Nguyen's NPI number?

The NPI number for Duc Nguyen is 1033679899. It was assigned to this individual provider in the NPPES registry on March 20, 2019.

Where is Duc Nguyen located?

Duc Nguyen practices at 950 Campbell Ave, West Haven, CT 06516. The listed phone number is (203) 932-5711.

What is Duc Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Duc Nguyen enrolled in Medicare?

Yes. Duc Nguyen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Duc Nguyen was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.