1. Home
  2. Directory
  3. Texas
  4. Dallas
  5. Surgery
  6. NPI Profile

DIANA LEIGH DIESEN MD
NPI 1457525230
Surgery - Pediatric Surgery in Dallas, TX

Active since April 14, 2008PECOS Enrolled
5323 HARRY HINES BLVD, DALLAS, TX 75390(919) 724-2224(919) 681-8856 Get Directions Write a Review

NPPES record last updated: June 17, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Diana Leigh Diesen Md NPPES

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

DIANA LEIGH DIESEN MD (NPI 1457525230) is an individual pediatric surgery provider in Dallas, Texas, licensed in Texas (P1453) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1457525230
Entity TypeIndividualFemale
Primary Taxonomy2086S0120X
Provider Legal NameDIANA LEIGH DIESENCredential: MD
Location Address5323 HARRY HINES BLVDDallas, TX 75390-7201
Mailing Address5323 Harry Hines BlvdDallas, TX 75390-7201
Phone(919) 724-2224
Fax(919) 681-8856
Sole ProprietorNo
Enumeration DateApril 14, 2008
Last NPPES UpdateJune 17, 2025
NPPES CertifiedJune 17, 2025
✔ NPI 1457525230 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgery · Pediatric SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0120X
License✔ Licensed in TX · P1453
Definition
A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.
Also ListedSurgeryTaxonomy 208600000X · License P1453 (TX), 122296 (NC)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
5323 HARRY HINES BLVD, Dallas, TX 75390
Open in Google Maps ↗

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana Leigh Diesen 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.

Medicare Billing Reassignment

Medicare enrollment records show Diana Diesen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Texas Southwestern Medical Center At Dallas
Same address
Nurse Anesthetist, Certified Registered
5323 HARRY HINES BLVD
Dallas, TX 75390
  • Reassigned Medicare billing, Texas enrollment
  • 5,299 clinicians in this Medicare group
NPI 1114992161 (214) 648-5460

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

MRS. TANYA MARIE PLETIN PA-C
Physician Assistant
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 648-6400
BENJAMIN SETH MARTINEZ MD
Anesthesiology
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 648-3111
LEE M. LUNSFORD MD
Anesthesiology
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 648-8000
TING-YI CHEN M.D.
Internal Medicine (Infectious Disease)
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 645-2800
DR. STEPHANIE C JONES MD
Pain Medicine (Interventional Pain Medicine)
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 648-9374
DR. KATHERINE ANNA JOHNSON MD
Pediatrics
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 456-0771
ALEX KOYFMAN M.D.
Emergency Medicine
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 645-0624
MR. JAWAHAR JAGARAPU M.D
Pediatrics (Neonatal-Perinatal Medicine)
5323 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 648-3903

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 Diesen's NPI number?

The NPI number for Diana Diesen is 1457525230. It was assigned to this individual provider in the NPPES registry on April 14, 2008.

Where is Diana Diesen located?

Diana Diesen practices at 5323 Harry Hines Blvd, Dallas, TX 75390. The listed phone number is (919) 724-2224.

What is Diana Diesen's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.

Is Diana Diesen enrolled in Medicare?

Yes. Diana Diesen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Diana Diesen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Diesen reassigns Medicare benefits to University Of Texas Southwestern Medical Center At Dallas (Dallas, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Diesen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diana Diesen accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Diana Diesen 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 Diana Diesen was last updated on June 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.