1. Home
  2. Directory
  3. California
  4. Berkeley
  5. Physiological Laboratory
  6. NPI Profile

O.N. DIAGNOSTICS, LLC
NPI 1306313648
Physiological Laboratory in Berkeley, CA

Active since October 24, 2018
1936 UNIVERSITY AVE STE 280, BERKELEY, CA 94704(510) 204-0688 Get Directions Write a Review

NPPES record last updated: January 2, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 2, 2024, Oct 24, 2018 (2 updates tracked since 2018).

About O.n. Diagnostics, Llc NPPES

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

O.N. DIAGNOSTICS, LLC (NPI 1306313648) is a healthcare organization registered as a physiological laboratory in Berkeley, California and active in the NPI registry since October 2018. The organization lists Shui Wong, Chief Operating Officer, as its authorized official.

NPPES Registry Identity

NPI1306313648
Entity TypeOrganization
Primary Taxonomy293D00000X
Legal Business NameO.N. DIAGNOSTICS, LLC
Location Address1936 UNIVERSITY AVE STE 280Berkeley, CA 94704-1071
Mailing Address1936 University Ave Ste 280Berkeley, CA 94704-1071
Phone(510) 204-0688
Organization SubpartNo
Authorized OfficialShui WongChief Operating Officer · (510) 204-0688
Enumeration DateOctober 24, 2018
Last NPPES UpdateJanuary 2, 20242 updates tracked since enumeration
NPPES CertifiedJanuary 1, 2024
✔ NPI 1306313648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysiological LaboratoryLaboratories
Taxonomy Code293D00000X
Definition
A laboratory that operates independently of a hospital and physician's office to furnish physiological diagnostic services (e.g. EEG's , EKG's, scans, etc.). Facilities offering ONLY physiological services are not certified as independent laboratories. If an independent laboratory offers physiological services IN ADDITION to clinical laboratory services, they are surveyed only for compliance with the clinical laboratory regulations because there are no health and safety regulations for physiological services.
1936 UNIVERSITY AVE STE 280, Berkeley, CA 94704
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment and revalidation status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

O.n. Diagnostics, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by October 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
StateCaliforniaEnrollment IDO20201002000039Non-DME Part B · Independent Diagnostic Testing Facility (IDTF)Due dateOctober 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

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 O.N. Diagnostics, LLC's NPI number?

The NPI number for O.N. Diagnostics, LLC is 1306313648. It was assigned to this organization in the NPPES registry on October 24, 2018.

Where is O.N. Diagnostics, LLC located?

O.N. Diagnostics, LLC is located at 1936 University Ave Ste 280, Berkeley, CA 94704. The listed phone number is (510) 204-0688.

What is O.N. Diagnostics, LLC's specialty?

The primary specialty registered for this NPI is Physiological Laboratory with taxonomy code 293D00000X.

Is O.N. Diagnostics, LLC enrolled in Medicare?

Yes. O.N. Diagnostics, LLC is registered in the Medicare PECOS enrollment system.

When is O.N. Diagnostics, LLC'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 (California, Independent Diagnostic Testing Facility (IDTF)) is due for revalidation by October 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.

When was this NPI record last updated?

The NPPES record for O.N. Diagnostics, LLC was last updated on January 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.