Robert Ryan, M.D.
NPI 1093743239 · Pediatric Adolescent Medicine Physician · Ventura, CA
Robert Ryan, M.D. is a Pediatric Adolescent Medicine Physician provider in Ventura, CA (NPI 1093743239).
Provider details
- NPI number
- 1093743239
- Entity type
- Individual
- Primary specialty
- Pediatric Adolescent Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A44628 (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
19 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
- 2006-06-28
- Last updated
- 2012-03-12
Frequently asked questions
- What is Robert Ryan's NPI number?
- Robert Ryan's National Provider Identifier (NPI) is 1093743239, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Ryan's specialty?
- Robert Ryan is listed in the NPPES registry with a primary specialty of Pediatric Adolescent Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Ryan located?
- Robert Ryan's practice location on file with NPPES is 5415 Topa Topa Dr, Ventura, CA 93003-1148.
- What is Robert Ryan's phone number?
- The practice phone number listed in the NPPES registry for Robert Ryan is (805) 320-5120.
- Is Robert Ryan's NPI active?
- Yes — Robert Ryan's NPI (1093743239) is active in the NPPES registry as of the last update on 2012-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.