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

DR. PHUONG T NGUYEN M.D.
NPI 1801838750
Internal Medicine - Gastroenterology in Newport Beach, CA

Q: What is Phuong Nguyen's NPI number?

The NPI number for Phuong Nguyen is 1801838750. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Q: What is Phuong Nguyen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Phuong Nguyen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 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.

Active since June 12, 2006PECOS EnrolledAccepts Medicare Assignment

43.3/100

CMS Quality Rating

1 HOAG DR BL41-107, NEWPORT BEACH, CA 92663(949) 764-5760(949) 764-5607 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. Phuong T Nguyen M.d. NPPES

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

DR. PHUONG T NGUYEN M.D. (NPI 1801838750) is an individual gastroenterology provider in Newport Beach, California, licensed in California (G76446) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (1990).

NPPES Registry Identity

NPI1801838750

Entity TypeIndividualFemale

Primary Taxonomy207RG0100X

Provider Legal NameDR. PHUONG T NGUYENCredential: M.D.

Location Address1 HOAG DR BL41-107Newport Beach, CA 92663-4162

Mailing Address351 Hospital Rd, Suite 209Newport Beach, CA 92663-3509 · (949) 764-5760 · Fax (949) 764-5607

Phone(949) 764-5760

Fax(949) 764-5607

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 1990

Enumeration DateJune 12, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1801838750 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 CA · G76446

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.

1 HOAG DR BL41-107, Newport Beach, CA 92663

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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 and accepts Medicare assignment

Dr. Phuong T Nguyen 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 ID7911929500

PECOS Enrollment IDI20051222000794

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 12

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.

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.

66 services64 patients

Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43242

This procedure involves using an ultrasound to guide a needle to specific areas in the esophagus, stomach, or upper small bowel. A flexible endoscope is used to reach these areas. The needle collects a small sample for testing.

37 services36 patients

Study of esophageal sensation by balloon distension 91040

This procedure involves inflating a small balloon in the esophagus, the tube connecting your mouth to your stomach. It helps doctors understand how your esophagus responds to pressure changes, aiding in the diagnosis of certain digestive disorders.

34 services34 patients

Monitoring and recording of esophageal function through a capsule attached to the esophagus wall 91035

This procedure involves a small capsule being attached to your esophagus wall. It measures and records how your esophagus is functioning, helping to identify any potential issues. You won't feel the capsule and it will pass naturally through your system after a few days.

33 services33 patients

Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope 43238

An ultrasound guided needle aspiration or biopsy of the esophagus involves using a flexible tube with a camera (endoscope) to view your esophagus. An ultrasound device on the endoscope helps to guide a needle to take a small tissue sample for testing. This is a safe, minimally invasive procedure.

31 services31 patients

Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43259

This procedure involves a flexible tube with a camera, called an endoscope, inserted through your mouth to examine your esophagus, stomach, and upper small bowel. An ultrasound device on the endoscope helps get detailed images. It's safe and helps diagnose various conditions.

28 services27 patients

Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth 43237

This procedure involves a flexible tube with a camera and ultrasound device, inserted through the mouth to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like inflammation, tumors, or other abnormalities.

27 services26 patients

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.

24 services23 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.

22 services22 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

17 services15 patients

Ultrasound exam of lower large bowel using a flexible endoscope 45341

An ultrasound exam of the lower large bowel involves inserting a thin, flexible tube with a small ultrasound device at its tip into the bowel. This allows for detailed images of the bowel wall and nearby structures, which helps in diagnosing various conditions.

11 services11 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92663 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

43.3/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

69.18

Improvement Activities

Cost

52.09

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 Phuong Nguyen's NPI number?

The NPI number for Phuong Nguyen is 1801838750. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Where is Phuong Nguyen located?

Phuong Nguyen practices at 1 Hoag Dr Bl41-107, Newport Beach, CA 92663. The listed phone number is (949) 764-5760.

What is Phuong Nguyen's specialty?

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

Is Phuong Nguyen enrolled in Medicare?

Yes. Phuong Nguyen 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.

When was this NPI record last updated?

The NPPES record for Phuong Nguyen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 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.