Addison Asc LLC

Addison Asc LLC is a healthcare organization registered as Ambulatory Surgical Clinic/Center in Sherman Oaks, CA, holding Type 2 (organization) NPI 1467903716 since 2016. The authorized official on file is Larisse Lee, Medical Director.

✓ Active NPI ✓ Valid NPI checksum

NPI	1467903716
Entity type	Organization (Type 2)
Legal business name	Addison Asc LLC
Practice address	4955 VAN NUYS BLVD, SUITE 719, Sherman Oaks, CA, 91403
Phone	8183250400
Enumeration date	2016-10-21
Last updated in NPPES	2016-10-31

Authorized official

Name	Larisse Lee
Title	Medical Director
Phone	8183250400

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
261QA1903X	Ambulatory Surgical Clinic/Center	Primary	—	—

Copy-ready billing details

Provider: Addison Asc LLC
NPI: 1467903716
Taxonomy: 261QA1903X (Ambulatory Surgical Clinic/Center)
Address: 4955 VAN NUYS BLVD, SUITE 719, Sherman Oaks, CA, 91403

Providers at this address

NPI	Name	Type	Specialty	Location
1457356479	Timothy Stacy	Individual	Acute Care Nurse Practitioner	Sherman Oaks, CA
1679548556	Sanjay Vadgama	Individual	Pulmonary Disease Physician	Sherman Oaks, CA
1033186614	Angela Castellano	Individual	Dermatology Physician	Sherman Oaks, CA
1225091812	Siamak Karimian	Individual	Interventional Cardiology Physician	Sherman Oaks, CA
1417912270	Gregg Sobeck	Individual	Specialist	Sherman Oaks, CA
1568427029	Domenick Sisto	Individual	Specialist	Sherman Oaks, CA
1881632966	Richard Swatt	Individual	General Practice Dentistry	Sherman Oaks, CA
1710923677	Kidney Center of Sherman Oaks, Inc.	Organization	End-Stage Renal Disease (ESRD) Treatment Clinic/Center	Sherman Oaks, CA

Verify this record

Cross-check NPI 1467903716 against the authoritative CMS record: view Addison Asc LLC on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Where is Addison Asc LLC located?

The practice location on file with NPPES is in Sherman Oaks, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-10-31. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-10-31.