Cynthia W Chao D O a Professional Corporation
NPI 1164800488 · Obstetrics & Gynecology Physician · Los Alamitos, CA
Cynthia W Chao D O a Professional Corporation is a Obstetrics & Gynecology Physician organization in Los Alamitos, CA (NPI 1164800488).
Provider details
- NPI number
- 1164800488
- Entity type
- Organization
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Cynthia Chao, Doctor(562) 961-3137
- License
- 20A7343 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Managed Care Organizations
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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.
Practice location
Mailing address
Other names (DBA / former)
- Former legal business name
- Cynthia W. Chao D O a Professional Corporation
Registry dates
- Enumerated
- 2015-05-07
- Last updated
- 2024-04-20
- Certified
- 2024-04-20
Frequently asked questions
- What is Cynthia W Chao D O a Professional Corporation's NPI number?
- Cynthia W Chao D O a Professional Corporation's National Provider Identifier (NPI) is 1164800488, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Cynthia W Chao D O a Professional Corporation?
- Cynthia W Chao D O a Professional Corporation is classified in the NPPES registry as Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Cynthia W Chao D O a Professional Corporation located?
- Cynthia W Chao D O a Professional Corporation's practice location on file with NPPES is 10861 Cherry St Ste 109, Los Alamitos, CA 90720-5400.
- What is Cynthia W Chao D O a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Cynthia W Chao D O a Professional Corporation is (562) 961-3137.
- Who is the authorized official for Cynthia W Chao D O a Professional Corporation?
- The authorized official listed on Cynthia W Chao D O a Professional Corporation's NPPES record is Cynthia Chao, Doctor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Cynthia W Chao D O a Professional Corporation's NPI active?
- Yes — Cynthia W Chao D O a Professional Corporation's NPI (1164800488) is active in the NPPES registry as of the last update on 2024-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.