Robert Warburton, ARNP
NPI 1477021764 · Psychiatric/Mental Health Nurse Practitioner · Tustin, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Warburton, ARNP is a Psychiatric/Mental Health Nurse Practitioner provider in Tustin, CA (NPI 1477021764).
Provider details
- NPI number
- 1477021764
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Male
- Sole proprietor
- No
- License
- 61527591 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
- 2018-11-05
- Last updated
- 2025-11-14
- Certified
- 2025-11-14
Frequently asked questions
- What is Robert Warburton's NPI number?
- Robert Warburton's National Provider Identifier (NPI) is 1477021764, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Warburton's specialty?
- Robert Warburton is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Warburton located?
- Robert Warburton's practice location on file with NPPES is 250 W Main St Ste 101, Tustin, CA 92780-7717.
- What is Robert Warburton's phone number?
- The practice phone number listed in the NPPES registry for Robert Warburton is (714) 461-4121.
- Does Robert Warburton accept Medicare?
- Robert Warburton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Warburton's NPI active?
- Yes — Robert Warburton's NPI (1477021764) is active in the NPPES registry as of the last update on 2025-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.