Joan Tei Sasaki, MD, a Medical Corporation
NPI 1851541841 · Obstetrics & Gynecology Physician · Mission Viejo, CA
Joan Tei Sasaki, MD, a Medical Corporation is a Obstetrics & Gynecology Physician organization in Mission Viejo, CA (NPI 1851541841).
Provider details
- NPI number
- 1851541841
- Entity type
- Organization
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Joan Sasaki, President(949) 633-2969
- License
- G66772 (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
17 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
Registry dates
- Enumerated
- 2008-09-25
- Last updated
- 2014-02-10
Frequently asked questions
- What is Joan Tei Sasaki, MD, a Medical Corporation's NPI number?
- Joan Tei Sasaki, MD, a Medical Corporation's National Provider Identifier (NPI) is 1851541841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Joan Tei Sasaki, MD, a Medical Corporation?
- Joan Tei Sasaki, MD, a Medical Corporation is classified in the NPPES registry as Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Joan Tei Sasaki, MD, a Medical Corporation located?
- Joan Tei Sasaki, MD, a Medical Corporation's practice location on file with NPPES is 26691 Plaza, Mission Viejo, CA 92691-6329.
- What is Joan Tei Sasaki, MD, a Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Joan Tei Sasaki, MD, a Medical Corporation is (949) 441-5556.
- Who is the authorized official for Joan Tei Sasaki, MD, a Medical Corporation?
- The authorized official listed on Joan Tei Sasaki, MD, a Medical Corporation's NPPES record is Joan Sasaki, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Joan Tei Sasaki, MD, a Medical Corporation's NPI active?
- Yes — Joan Tei Sasaki, MD, a Medical Corporation's NPI (1851541841) is active in the NPPES registry as of the last update on 2014-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.