Katherine Au, DO
NPI 1770112450 · Public Health & General Preventive Medicine Physician · Roseville, CA
Enrolled with Medicare as Practitioner - Preventive Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Au, DO is a Public Health & General Preventive Medicine Physician provider in Roseville, CA (NPI 1770112450).
Provider details
- NPI number
- 1770112450
- Entity type
- Individual
- Primary specialty
- Public Health & General Preventive Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A20115 (CA)
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
6 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
- 2020-04-05
- Last updated
- 2025-01-23
- Certified
- 2025-01-23
Frequently asked questions
- What is Katherine Au's NPI number?
- Katherine Au's National Provider Identifier (NPI) is 1770112450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Au's specialty?
- Katherine Au is listed in the NPPES registry with a primary specialty of Public Health & General Preventive Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Au located?
- Katherine Au's practice location on file with NPPES is 8 Medical Plaza Dr Ste 180, Roseville, CA 95661-3107.
- What is Katherine Au's phone number?
- The practice phone number listed in the NPPES registry for Katherine Au is (916) 887-4660.
- Does Katherine Au accept Medicare?
- Katherine Au is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Au's NPI active?
- Yes — Katherine Au's NPI (1770112450) is active in the NPPES registry as of the last update on 2025-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.