Nancy Cao, MD
NPI 1780473835 · Emergency Medicine Physician · Tucson, AZ
Enrolled with Medicare as Order and Referring Only - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Cao, MD is a Emergency Medicine Physician provider in Tucson, AZ (NPI 1780473835).
Provider details
- NPI number
- 1780473835
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R81564 (AZ)
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
1 yr 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
- 2025-05-05
- Last updated
- 2025-05-05
- Certified
- 2025-05-05
Frequently asked questions
- What is Nancy Cao's NPI number?
- Nancy Cao's National Provider Identifier (NPI) is 1780473835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Cao's specialty?
- Nancy Cao is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Cao located?
- Nancy Cao's practice location on file with NPPES is 3950 S Country Club Rd Ste 200, Tucson, AZ 85714-2227.
- What is Nancy Cao's phone number?
- The practice phone number listed in the NPPES registry for Nancy Cao is (520) 626-5582.
- Does Nancy Cao accept Medicare?
- Nancy Cao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Cao's NPI active?
- Yes — Nancy Cao's NPI (1780473835) is active in the NPPES registry as of the last update on 2025-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.