Anne Liao, MD
NPI 1164099487 · Obstetrics & Gynecology Physician · Diamond Bar, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anne Liao, MD is a Obstetrics & Gynecology Physician provider in Diamond Bar, CA (NPI 1164099487).
Provider details
- NPI number
- 1164099487
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
83% 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$149 across 8 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
Additional practice locations (1)
- 1720 E Cesar E Chavez AveLos Angeles, CA 90033-2414Phone: (323) 260-5781
Registry dates
- Enumerated
- 2021-06-06
- Last updated
- 2025-09-02
- Certified
- 2025-09-02
Frequently asked questions
- What is Anne Liao's NPI number?
- Anne Liao's National Provider Identifier (NPI) is 1164099487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anne Liao's specialty?
- Anne Liao is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Anne Liao located?
- Anne Liao's practice location on file with NPPES is 253 S Diamond Bar Blvd, Diamond Bar, CA 91765-1606.
- What is Anne Liao's phone number?
- The practice phone number listed in the NPPES registry for Anne Liao is (909) 860-1144.
- Does Anne Liao accept Medicare?
- Anne Liao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anne Liao's NPI active?
- Yes — Anne Liao's NPI (1164099487) is active in the NPPES registry as of the last update on 2025-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.