Dan Tzuang, MD
NPI 1114040789 · Psychiatry Physician · San Mateo, CA
Dan Tzuang, MD is a Psychiatry Physician provider in San Mateo, CA (NPI 1114040789).
Provider details
- NPI number
- 1114040789
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A97957 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 34 |
| Desvenlafaxine Succinatebrand: Desvenlafaxine Succinate Er | 29 |
| Buspirone Hcl | 27 |
| Gabapentin | 23 |
| Mirtazapine | 20 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 19 |
| Escitalopram Oxalate | 17 |
| Quetiapine Fumarate | 16 |
| Bupropion Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Dan Tzuang's NPI number?
- Dan Tzuang's National Provider Identifier (NPI) is 1114040789, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dan Tzuang's specialty?
- Dan Tzuang is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Dan Tzuang located?
- Dan Tzuang's practice location on file with NPPES is 222 W 39th Ave, San Mateo, CA 94403-4364.
- What is Dan Tzuang's phone number?
- The practice phone number listed in the NPPES registry for Dan Tzuang is (650) 573-2530.
- Is Dan Tzuang's NPI active?
- Yes — Dan Tzuang's NPI (1114040789) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.