DIANE DUYEN T NGUYEN DO
NPI 1023233756
Internal Medicine - Medical Oncology in Mcallen, TX

Q: What is Diane Duyen Nguyen's NPI number?

The NPI number for Diane Duyen Nguyen is 1023233756. It was assigned to this individual provider in the NPPES registry on April 16, 2007.

Q: What is Diane Duyen Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Active since April 16, 2007PECOS EnrolledAccepts Medicare Assignment

205 E TORONTO AVE, MCALLEN, TX 78503(956) 296-3990(956) 665-6837 Get Directions Write a Review

NPPES record last updated: October 3, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 3, 2024, Aug 29, 2022 (2 updates tracked since 2022).

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About Diane Duyen T Nguyen Do NPPES

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

DIANE DUYEN T NGUYEN DO (NPI 1023233756) is an individual medical oncology provider in Mcallen, Texas, licensed in Texas (M3045) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, is affiliated with South Texas Health System, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1023233756

Entity TypeIndividualFemale

Primary Taxonomy207RX0202X

Provider Legal NameDIANE DUYEN T NGUYENCredential: DO

Location Address205 E TORONTO AVEMcallen, TX 78503-1209

Mailing AddressPo Box 531968Harlingen, TX 78553-1968 · Fax (956) 296-6842

Phone(956) 296-3990

Fax(956) 665-6837

Sole ProprietorNo

Medical School CMSWest Virginia School Of Osteopathic MedicineGraduated 2001

Enumeration DateApril 16, 2007

Last NPPES UpdateOctober 3, 20242 updates tracked since enumeration

NPPES CertifiedOctober 3, 2024

✔ NPI 1023233756 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in TX · M3045

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License DO1698 (TN), M3045 (TX)

205 E TORONTO AVE, Mcallen, TX 78503

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Secondary Practice Locations 2

Location 1602 Indiana AveLubbock, TX 79415-3364 · Phone (806) 775-8600 · Fax (806) 775-8602

Location 227700 Northwest Fwy Ste 580Cypress, TX 77433-6766 · Phone (832) 791-5530

Other Identifiers 1

Other4155051TN · Bcbs Of Tn

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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

Diane Duyen T Nguyen Do 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 ID1052402492

PECOS Enrollment IDI20120117000649

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

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.

20 services15 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

South Texas Health System

Acute Care Hospitals · Edinburg, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450119

Location1102 W Trenton RoadEdinburg, TX 78539 · Hidalgo County

Emergency services Birthing friendly

Rio Grande Regional Hospital

Acute Care Hospitals · Mcallen, TX

3/5 CMS rating

OwnershipProprietary

CMS Certification Number450711

Location101 E Ridge RdMcallen, TX 78503 · Hidalgo County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78503 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

$166.88 typical visit price

range $54.84 – $166.88

Typical copayment $41.72 (range $13.71 – $41.72)

Most-billed visit code 99205

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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.

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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.

DR. CYNTHIA CAVAZOS-GONZALEZ PH.D

Psychologist (Clinical)