Rex A. Yannis, MD, a Prof. Corp.
NPI 1588808307 · Ophthalmology Physician · Arroyo Grande, CA
Rex A. Yannis, MD, a Prof. Corp. is a Ophthalmology Physician organization in Arroyo Grande, CA (NPI 1588808307).
Provider details
- NPI number
- 1588808307
- Entity type
- Organization
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Rex Yannis, Ceo(805) 481-5511
- License
- C42705 (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
- 2009-04-23
- Last updated
- 2009-04-23
Frequently asked questions
- What is Rex A. Yannis, MD, a Prof. Corp.'s NPI number?
- Rex A. Yannis, MD, a Prof. Corp.'s National Provider Identifier (NPI) is 1588808307, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Rex A. Yannis, MD, a Prof. Corp.?
- Rex A. Yannis, MD, a Prof. Corp. is classified in the NPPES registry as Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Rex A. Yannis, MD, a Prof. Corp. located?
- Rex A. Yannis, MD, a Prof. Corp.'s practice location on file with NPPES is 146 Traffic Way, Arroyo Grande, CA 93420-3376.
- What is Rex A. Yannis, MD, a Prof. Corp.'s phone number?
- The practice phone number listed in the NPPES registry for Rex A. Yannis, MD, a Prof. Corp. is (805) 481-5511.
- Who is the authorized official for Rex A. Yannis, MD, a Prof. Corp.?
- The authorized official listed on Rex A. Yannis, MD, a Prof. Corp.'s NPPES record is Rex Yannis, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Rex A. Yannis, MD, a Prof. Corp.'s NPI active?
- Yes — Rex A. Yannis, MD, a Prof. Corp.'s NPI (1588808307) is active in the NPPES registry as of the last update on 2009-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.