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OLIVIA R TISA LGSW
NPI 1649138553
Social Worker in Washington, DC

Active since January 12, 2026PECOS Enrolled
4400 MACARTHUR BLVD NW STE 300, WASHINGTON, DC 20007(202) 455-8440 Get Directions Write a Review

NPPES record last updated: January 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Olivia R Tisa Lgsw NPPES

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

OLIVIA R TISA LGSW (NPI 1649138553) is an individual social worker in Washington, District Of Columbia, licensed in District Of Columbia (LG200002837) and active in the NPI registry since January 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1649138553
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameOLIVIA R TISACredential: LGSW
Location Address4400 MACARTHUR BLVD NW STE 300Washington, DC 20007-2521
Mailing Address2425 17th St Nw Apt 21Washington, DC 20009-2798 · (708) 846-0478
Phone(202) 455-8440
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateJanuary 12, 2026
NPPES CertifiedJanuary 12, 2026
✔ NPI 1649138553 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in DC · LG200002837
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
4400 MACARTHUR BLVD NW STE 300, Washington, DC 20007
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Olivia R Tisa Lgsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1557826989
PECOS Enrollment IDI20260716002961
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 Olivia Tisa reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Privia Medical Group, LLC
2.5 mi
Internal Medicine
950 N GLEBE RD STE 700
Arlington, VA 22203
  • Reassigned Medicare billing, District of Columbia enrollment
  • 1,534 clinicians in this Medicare group
NPI 1013042480 (571) 366-8850

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 7

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

JOSHUA PINA
Psychologist (Counseling)
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 747-6665
MRS. TRESNIECE NICOLE EVANS LGSW
Counselor (Mental Health)
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 747-6665
BRIYA STEVENSON
Social Worker
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 747-6665
TASJA GRAY
Counselor (Mental Health)
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 455-8440
CORINTHIA DOMINIQUE PAYLOR
Social Worker
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 747-6665
SHATTER HEALTH, LLC
Social Worker (Clinical)
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 361-2453
YU-HSIN CHEN
Counselor (Mental Health)
4400 MACARTHUR BLVD NW STE 300
WASHINGTON, DC 20007
District of Columbia (202) 747-6665

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 Olivia Tisa's NPI number?

The NPI number for Olivia Tisa is 1649138553. It was assigned to this individual provider in the NPPES registry on January 12, 2026.

Where is Olivia Tisa located?

Olivia Tisa practices at 4400 Macarthur Blvd NW Ste 300, Washington, DC 20007. The listed phone number is (202) 455-8440.

What is Olivia Tisa's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Olivia Tisa enrolled in Medicare?

Yes. Olivia Tisa is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Olivia Tisa's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olivia Tisa reassigns Medicare benefits to Privia Medical Group, LLC (Arlington, VA). 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 Olivia Tisa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Olivia Tisa was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.