Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mrs. Chi-Ying Diana Sage, ARNP

Individual provider Family Nurse Practitioner · NPI 1831722370

Mrs. Chi-Ying Diana Sage, ARNP is a Nurse Practitioner in Waterloo, Iowa. Qualified in 2019, 7 years ago. Practices with Matthew Smith MD PC, a 2-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
7
Licensed in
IA
In the registry since
2020
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

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Practice location Address checks out

1753 W Ridgeway Ave Ste 103A
Waterloo, IA 50701-4521
Phone: (319) 235-3568
Fax: (319) 235-5013
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence A157738 (IA)

Record details

NPI number1831722370
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorYes
NPI enumeratedFebruary 12, 2020
Last updated in NPPESMay 14, 2020
Certification dateMay 14, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Matthew Smith Md Pc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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