Chi-Ying Sage, ARNP
NPI 1831722370 · Family Nurse Practitioner · Waterloo, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chi-Ying Sage, ARNP is a Family Nurse Practitioner provider in Waterloo, IA (NPI 1831722370).
Provider details
- NPI number
- 1831722370
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- A157738 (IA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
503 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 113 | $71 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 105 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 65 | $102 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 64 | $101 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 61 | $15 |
| Administration of Pneumococcal Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 149 | 77 |
| Pantoprazole Sodium | 87 | 47 |
| Levothyroxine Sodium | 86 | 47 |
| Simvastatin | 72 | 40 |
| Meloxicam | 64 | 29 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 57 | 30 |
| Omeprazole | 56 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,746 across 143 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-02-12
- Last updated
- 2020-05-14
- Certified
- 2020-05-14
Frequently asked questions
- What is Chi-Ying Sage's NPI number?
- Chi-Ying Sage's National Provider Identifier (NPI) is 1831722370, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chi-Ying Sage's specialty?
- Chi-Ying Sage is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Chi-Ying Sage located?
- Chi-Ying Sage's practice location on file with NPPES is 1753 W Ridgeway Ave Ste 103a, Waterloo, IA 50701-4521.
- What is Chi-Ying Sage's phone number?
- The practice phone number listed in the NPPES registry for Chi-Ying Sage is (319) 235-3568.
- Does Chi-Ying Sage accept Medicare?
- Chi-Ying Sage is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chi-Ying Sage's NPI active?
- Yes — Chi-Ying Sage's NPI (1831722370) is active in the NPPES registry as of the last update on 2020-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.