SEAN MAXIMILLIAN TAASAN
NPI 1225599335
Internal Medicine - Hematology & Oncology in Dallas, TX

Q: What is Sean Taasan's NPI number?

The NPI number for Sean Taasan is 1225599335. It was assigned to this individual provider in the NPPES registry on March 29, 2019.

Q: What is Sean Taasan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Sean Taasan was last updated on September 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since March 29, 2019PECOS EnrolledAccepts Medicare Assignment

6202 HARRY HINES BLVD, DALLAS, TX 75390(214) 645-3999 Get Directions Write a Review

NPPES record last updated: September 15, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 15, 2025, Jul 4, 2022 (2 updates tracked since 2022).

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About Sean Maximillian Taasan NPPES

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

SEAN MAXIMILLIAN TAASAN (NPI 1225599335) is an individual hematology & oncology provider in Dallas, Texas, licensed in Texas (T8661) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Ut Southwestern University Hospital - William P. Clements Jr., and is a graduate of Other (2019).

NPPES Registry Identity

NPI1225599335

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameSEAN MAXIMILLIAN TAASAN

Location Address6202 HARRY HINES BLVDDallas, TX 75390-0001

Mailing AddressPo Box 845347Dallas, TX 75284-7208

Phone(214) 645-3999

Sole ProprietorNo

Medical School CMSOtherGraduated 2019

Enumeration DateMarch 29, 2019

Last NPPES UpdateSeptember 15, 20252 updates tracked since enumeration

NPPES CertifiedSeptember 15, 2025

✔ NPI 1225599335 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in TX · T8661

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

6202 HARRY HINES BLVD, Dallas, TX 75390

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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

Sean Maximillian Taasan 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 ID4880199199

PECOS Enrollment IDI20250926001789

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.

Hospital Affiliations CMS Care Compare

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

Ut Southwestern University Hospital - William P. Clements Jr.

Acute Care Hospitals · Dallas, TX

5/5 CMS rating

OwnershipGovernment - State

CMS Certification Number450044

Location6201 Harry Hines BlvdDallas, TX 75390 · Dallas County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75390 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

$172.86 typical visit price

range $57.18 – $172.86

Typical copayment $43.21 (range $14.29 – $43.21)

Most-billed visit code 99205

Established Patient

$100.80 typical visit price

range $18.48 – $141.20

Typical copayment $25.20 (range $4.62 – $35.30)

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 20

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

SHAHROUZ SHOGHI PHARMD

Pharmacist (Oncology)