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DIANA DOAN-NGUYEN
NPI 1225792369
Nurse Practitioner - Family in Orange, CA

Active since October 25, 2021PECOS EnrolledAccepts Medicare Assignment
101 THE CITY DR S, ORANGE, CA 92868(714) 456-5705 Get Directions Write a Review

NPPES record last updated: April 3, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Diana Doan-nguyen NPPES

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

DIANA DOAN-NGUYEN (NPI 1225792369) is an individual family provider in Orange, California, licensed in California (95017996) and active in the NPI registry since October 2021. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1225792369
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameDIANA DOAN-NGUYEN
Location Address101 THE CITY DR SOrange, CA 92868-3201
Mailing Address1150 Baker StCosta Mesa, CA 92626-4111
Phone(714) 456-5705
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateOctober 25, 2021
Last NPPES UpdateApril 3, 2026
NPPES CertifiedApril 3, 2026
✔ NPI 1225792369 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 95017996
101 THE CITY DR S, Orange, CA 92868
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11150 Baker StCosta Mesa, CA 92626-4111
Location 24699 Jamboree RdNewport Beach, CA 92660-2526 · Phone (949) 557-0951

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

Diana Doan-nguyen 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 ID6507258431
PECOS Enrollment IDI20220126001227
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 5

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 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.
91 services87 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.
75 services68 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
31 services31 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
18 services18 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92868 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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.

Other Providers at the Same Location NPPES 19

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

CHARLES DAVID ROSEN M.D.
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 534-0547
GEORGE V LAWRY II MD
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7662
GAMAL M. GHONIEM M.D.
Urology
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-5378
AMY D KOSANKE CRNA
Nurse Anesthetist, Certified Registered
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-5261
REGENTS OF THE UNIVERSITY OF CALIFORNIA
Surgery
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-8068
DR. DEEPAK KUMAR RAJPOOT MD
Pediatrics (Pediatric Nephrology)
101 THE CITY DR S, BLDG. 56, SUITE 600
ORANGE, CA 92868
Orange County (714) 456-6815
HAMID REZA DJALILIAN M.D.
Otolaryngology (Otology & Neurotology)
101 THE CITY DR S, BLDG 56, SUITE 500 RTE 81
ORANGE, CA 92868
Orange County (714) 456-5753
DR. ABRAHAM ROSENBAUM MD
Anesthesiology
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-8068

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 Diana Doan-nguyen's NPI number?

The NPI number for Diana Doan-nguyen is 1225792369. It was assigned to this individual provider in the NPPES registry on October 25, 2021.

Where is Diana Doan-nguyen located?

Diana Doan-nguyen practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-5705.

What is Diana Doan-nguyen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Diana Doan-nguyen enrolled in Medicare?

Yes. Diana Doan-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 Diana Doan-nguyen was last updated on April 3, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.