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GREGORY NGUYENDUC M.D.
NPI 1326016239
Internal Medicine - Gastroenterology in Chandler, AZ

Active since March 08, 2006PECOS EnrolledAccepts Medicare Assignment
600 S DOBSON RD BLDG A, CHANDLER, AZ 85224(480) 786-6655 Get Directions Write a Review

NPPES record last updated: February 10, 2010. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Gregory Nguyenduc M.d. NPPES

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

GREGORY NGUYENDUC M.D. (NPI 1326016239) is an individual gastroenterology provider in Chandler, Arizona, licensed in Arizona (35213) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and is a graduate of University Of South Alabama College Of Medicine (1998).

NPPES Registry Identity

NPI1326016239
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameGREGORY NGUYENDUCCredential: M.D.
Location Address600 S DOBSON RD BLDG AChandler, AZ 85224-5678
Mailing AddressPo Box 6190Chandler, AZ 85246-6190 · (480) 786-6655
Phone(480) 786-6655
Sole ProprietorNo
Medical School CMSUniversity Of South Alabama College Of MedicineGraduated 1998
Enumeration DateMarch 8, 2006
Last NPPES UpdateFebruary 10, 2010
✔ NPI 1326016239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in AZ · 35213
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
600 S DOBSON RD BLDG A, Chandler, AZ 85224
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Other Identifiers 4

Medicare UPINI08756AZ
Medicaid463520AZ
Medicare UPINI08756WA
Medicare PINZ132658AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory Nguyenduc M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6507846102
PECOS Enrollment IDI20091009000398
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.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
141 services113 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
112 services93 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
90 services90 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
84 services81 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
76 services76 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
72 services70 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85224 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
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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

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

DR. ABRAHAM MOSES PANOSSIAN M.D.
Internal Medicine (Gastroenterology)
600 S DOBSON RD BLDG A
CHANDLER, AZ 85224
Maricopa County (480) 786-6655

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 Gregory Nguyenduc's NPI number?

The NPI number for Gregory Nguyenduc is 1326016239. It was assigned to this individual provider in the NPPES registry on March 8, 2006.

Where is Gregory Nguyenduc located?

Gregory Nguyenduc practices at 600 S Dobson Rd Bldg A, Chandler, AZ 85224. The listed phone number is (480) 786-6655.

What is Gregory Nguyenduc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Gregory Nguyenduc enrolled in Medicare?

Yes. Gregory Nguyenduc is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gregory Nguyenduc accept?

Health plans from Ambetter from Arizona Complete Health and UnitedHealthcare list Gregory Nguyenduc as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gregory Nguyenduc was last updated on February 10, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.