Timothy Liu, M.D.
NPI 1720262801 · Child & Adolescent Psychiatry Physician · San Diego, CA
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Liu, M.D. is a Child & Adolescent Psychiatry Physician provider in San Diego, CA (NPI 1720262801).
Provider details
- NPI number
- 1720262801
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A105535 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 139 | 17 |
| Quetiapine Fumarate | 107 | 25 |
| Trazodone Hcl | 83 | 26 |
| Zolpidem Tartrate | 79 | — |
| Mirtazapine | 65 | 18 |
| Risperidone | 64 | 12 |
| Sertraline Hcl | 61 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$132 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 11622 El Camino Real Ste 100San Diego, CA 92130-2051Phone: (858) 264-6463Fax: (844) 834-5633
Registry dates
- Enumerated
- 2007-12-24
- Last updated
- 2019-10-02
Frequently asked questions
- What is Timothy Liu's NPI number?
- Timothy Liu's National Provider Identifier (NPI) is 1720262801, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Liu's specialty?
- Timothy Liu is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Liu located?
- Timothy Liu's practice location on file with NPPES is 11622 El Camino Real Ste 100, San Diego, CA 92130-2051.
- What is Timothy Liu's phone number?
- The practice phone number listed in the NPPES registry for Timothy Liu is (858) 264-6463.
- Does Timothy Liu accept Medicare?
- Timothy Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Liu's NPI active?
- Yes — Timothy Liu's NPI (1720262801) is active in the NPPES registry as of the last update on 2019-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.