Gretchen Wagner, MD
NPI 1194187864 · Family Medicine Physician · Greenville, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Wagner, MD is a Family Medicine Physician provider in Greenville, WI (NPI 1194187864).
Provider details
- NPI number
- 1194187864
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 67986-20 (WI)
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 tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
301 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 126 | $118 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 69 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 46 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 | $83 |
| Administration of Influenza Virus VaccineG0008 | 15 | $10 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 195 | 55 |
| Amlodipine Besylate | 149 | 41 |
| Rosuvastatin Calcium | 110 | 33 |
| Omeprazole | 110 | 29 |
| Lisinopril | 107 | 31 |
| Losartan Potassium | 101 | 29 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$27 across 1 record (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
Additional practice locations (1)
- 1121 E North AveMilwaukee, WI 53212-3515Phone: (414) 267-6502Fax: (414) 267-3892
Registry dates
- Enumerated
- 2016-03-22
- Last updated
- 2025-10-16
- Certified
- 2025-10-16
Frequently asked questions
- What is Gretchen Wagner's NPI number?
- Gretchen Wagner's National Provider Identifier (NPI) is 1194187864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Wagner's specialty?
- Gretchen Wagner is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gretchen Wagner located?
- Gretchen Wagner's practice location on file with NPPES is W6981 Parkview Dr, Greenville, WI 54942-8034.
- What is Gretchen Wagner's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Wagner is (920) 882-2400.
- Does Gretchen Wagner accept Medicare?
- Gretchen Wagner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Wagner's NPI active?
- Yes — Gretchen Wagner's NPI (1194187864) is active in the NPPES registry as of the last update on 2025-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.