Julianna Diddle, MD
NPI 1013478783 · Hospitalist Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Julianna Diddle, MD is a Hospitalist Physician provider in Phoenix, AZ (NPI 1013478783).
Provider details
- NPI number
- 1013478783
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 66131 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2019-03-26
- Last updated
- 2022-10-07
- Certified
- 2022-10-07
Frequently asked questions
- What is Julianna Diddle's NPI number?
- Julianna Diddle's National Provider Identifier (NPI) is 1013478783, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Julianna Diddle's specialty?
- Julianna Diddle is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Julianna Diddle located?
- Julianna Diddle's practice location on file with NPPES is 1919 E Thomas Rd, Phoenix, AZ 85016-7710.
- What is Julianna Diddle's phone number?
- The practice phone number listed in the NPPES registry for Julianna Diddle is (602) 933-1000.
- Does Julianna Diddle accept Medicare?
- Julianna Diddle is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Julianna Diddle's NPI active?
- Yes — Julianna Diddle's NPI (1013478783) is active in the NPPES registry as of the last update on 2022-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.