Tammy Liu, D.O.
NPI 1740540970 · Family Medicine Physician · Pasadena, CA
Tammy Liu, D.O. is a Family Medicine Physician provider in Pasadena, CA (NPI 1740540970).
Provider details
- NPI number
- 1740540970
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 13512 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$61 across 2 records (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
Registry dates
- Enumerated
- 2012-05-22
- Last updated
- 2015-07-31
Frequently asked questions
- What is Tammy Liu's NPI number?
- Tammy Liu's National Provider Identifier (NPI) is 1740540970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Liu's specialty?
- Tammy Liu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tammy Liu located?
- Tammy Liu's practice location on file with NPPES is 3280 E Foothill Blvd, Pasadena, CA 91107-3103.
- What is Tammy Liu's phone number?
- The practice phone number listed in the NPPES registry for Tammy Liu is (626) 583-2200.
- Is Tammy Liu's NPI active?
- Yes — Tammy Liu's NPI (1740540970) is active in the NPPES registry as of the last update on 2015-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.