Lydia Bai-Tsin Ann
Psychiatry · Orange, CA
At a glance
3800 W Chapman Ave Ste 500, Orange, CA 92868-1638
NPPES record updated Jul 16, 2024. Public records can lag behind changes at a practice.
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- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
3800 W Chapman Ave Ste 500Orange, CA 92868-1638
Additional reported practice locations
760 Westwood Plz Ste 37-384Los Angeles, CA 900245055
Phone: 3102066721
Education & affiliations
- Medical / professional school
- University Of California, Geffen School Of Medicine
- Graduation year
- 2018
- CMS specialties
- Psychiatry
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Uci Health-Orange Orange, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $57.59 |
Reporting companies
| Company | Amount |
|---|---|
| AXSOME THERAPEUTICS, INC. | $38.72 |
| ITI, INC. (D/B/A INTRA-CELLULAR THERAPIES, INC.) | $18.87 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Psychiatry
- Taxonomy code
- 2084P0800X
- Enumeration date
- Jul 3, 2018
- Record updated
- Jul 16, 2024
More registry details
- Provider type
- Individual · Type 1
Reported taxonomies and licenses
2084P0805X
License reported: A164652 CA
208D00000X
License reported: A164652 CA
2084P0800X · Primary
License reported: A164652 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
3800 W Chapman Ave Ste 500Orange, CA 92868-1638
- Phone
- (714) 456-5902
Mailing address
200 S MANCHESTER AVE STE 300ORANGE, CA 928683219
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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