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

SEAN JAMES O'SULLIVAN MD, PHD
NPI 1609514702
Psychiatry & Neurology - Psychiatry in Austin, TX

Active since May 26, 2022PECOS Enrolled
1601 TRINITY ST, AUSTIN, TX 78712(833) 882-2737 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Sean James O'sullivan Md, Phd NPPES

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

SEAN JAMES O'SULLIVAN MD, PHD (NPI 1609514702) is an individual psychiatry provider in Austin, Texas, licensed in Texas (W4561) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1609514702
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameSEAN JAMES O'SULLIVANCredential: MD, PHD
Location Address1601 TRINITY STAustin, TX 78712-1765
Mailing AddressPo Box 739960Dallas, TX 75373-9960
Phone(833) 882-2737
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMay 26, 2022
Last NPPES UpdateJune 30, 2026
NPPES CertifiedJune 30, 2026
✔ NPI 1609514702 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in TX · W4561
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1601 TRINITY ST, Austin, TX 78712
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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 (PECOS)

Sean James O'sullivan Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7315483468
PECOS Enrollment IDI20260625002264
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78712 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
$174.00 typical visit price
range $57.88 – $174.00
Typical copayment $43.50 (range $14.47 – $43.50)
Most-billed visit code 99205
Established Patient
$71.95 typical visit price
range $18.88 – $142.23
Typical copayment $17.98 (range $4.72 – $35.55)
Most-billed visit code 99213
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.

BENJAMIN JAMES EHRENFELD LCSW
Social Worker (Clinical)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (512) 495-5300
ROBERT FEINSTEIN MD
Psychiatry & Neurology (Psychiatry)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (833) 882-2737
DR. VEENA A PATEL M.D.
Internal Medicine (Rheumatology)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (833) 882-2737
FAHEEM MAHOMED M.D.
Physical Medicine & Rehabilitation (Pediatric Rehabilitation Medicine)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (512) 913-5011
SUE GAIL ECKHARDT MD
Internal Medicine (Medical Oncology)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (512) 495-5512
MS. ERIN ELIZABETH LOPEZ PA-C
Physician Assistant (Medical)
1601 TRINITY ST, SUITE 704
AUSTIN, TX 78712
Travis County (512) 324-8320
AARON BRAVERMAN LCSW
Social Worker (Clinical)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (833) 882-2737
ANNA CAPASSO MD
Internal Medicine (Medical Oncology)
1601 TRINITY ST
AUSTIN, TX 78712
Travis County (833) 882-2737

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 Sean O'sullivan's NPI number?

The NPI number for Sean O'sullivan is 1609514702. It was assigned to this individual provider in the NPPES registry on May 26, 2022.

Where is Sean O'sullivan located?

Sean O'sullivan practices at 1601 Trinity St, Austin, TX 78712. The listed phone number is (833) 882-2737.

What is Sean O'sullivan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Sean O'sullivan enrolled in Medicare?

Yes. Sean O'sullivan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Sean O'sullivan was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 52 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.