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SEBASTIAN PC
NPI 1982856548
Psychiatry & Neurology - Psychiatry in Oklahoma City, OK

Active since October 15, 2008
4100 W MEMORIAL, SUITE 221, OKLAHOMA CITY, OK 73120(405) 755-5801(405) 755-5949 Get Directions Write a Review

NPPES record last updated: October 15, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Sebastian Pc NPPES

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

SEBASTIAN PC (NPI 1982856548) is a healthcare organization registered as a psychiatry in Oklahoma City, Oklahoma and active in the NPI registry since October 2008. The organization lists Veronique Sebastian, President, as its authorized official.

NPPES Registry Identity

NPI1982856548
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameSEBASTIAN PC
Location Address4100 W MEMORIAL, SUITE 221Oklahoma City, OK 73120
Mailing Address12800 Castlerock CtOklahoma City, OK 73142-5127 · (405) 751-2605
Phone(405) 755-5801
Fax(405) 755-5949
Organization SubpartNo
Authorized OfficialVeronique SebastianPresident · (405) 755-5801
Enumeration DateOctober 15, 2008
✔ NPI 1982856548 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 OK · 20879
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.
4100 W MEMORIAL, Oklahoma City, OK 73120
Open in Google Maps ↗

Other Identifiers 1

Other800522305OK · Ptan

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sebastian Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateOklahomaEnrollment IDO20090518000186Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Sebastian PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Veronique Sebastian, MD
Psychiatry
NPI 1740371129
3000 W MEMORIAL RD STE 218
Oklahoma City, OK 73120
(405) 755-5801
✔ PECOS6.9 mi

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

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 Sebastian PC's NPI number?

The NPI number for Sebastian PC is 1982856548. It was assigned to this organization in the NPPES registry on October 15, 2008.

Where is Sebastian PC located?

Sebastian PC is located at 4100 W Memorial Suite 221, Oklahoma City, OK 73120. The listed phone number is (405) 755-5801.

What is Sebastian PC's specialty?

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

Is Sebastian PC enrolled in Medicare?

Yes. Sebastian PC is registered in the Medicare PECOS enrollment system.

When is Sebastian PC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Oklahoma, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Sebastian PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Psychiatry) reassigns their Medicare billing to Sebastian PC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Sebastian PC was last updated on October 15, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.