Peggy Wanner-Barjenbruch, MD
NPI 1326023185 · Internal Medicine Physician · Mexico, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peggy Wanner-Barjenbruch, MD is a Internal Medicine Physician provider in Mexico, MO (NPI 1326023185).
Provider details
- NPI number
- 1326023185
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R2F18 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
2,277 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 | 851 | $117 |
| Anticoagulant Management of Patient Taking Warfarin93793 | 266 | $10 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 218 | $117 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 154 | $8 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 119 | $142 |
| Administration of Influenza Virus VaccineG0008 | 118 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 222 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 941 | 206 |
| Lisinopril | 586 | 118 |
| Amlodipine Besylate | 568 | 114 |
| Omeprazole | 567 | 127 |
| Atorvastatin Calcium | 538 | 110 |
| Pantoprazole Sodium | 536 | 109 |
| Furosemide | 471 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$115 across 7 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
- 2005-12-14
- Last updated
- 2022-10-28
- Certified
- 2022-10-28
Frequently asked questions
- What is Peggy Wanner-Barjenbruch's NPI number?
- Peggy Wanner-Barjenbruch's National Provider Identifier (NPI) is 1326023185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peggy Wanner-Barjenbruch's specialty?
- Peggy Wanner-Barjenbruch is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Peggy Wanner-Barjenbruch located?
- Peggy Wanner-Barjenbruch's practice location on file with NPPES is 600 Medical Park Dr, Mexico, MO 65265-3724.
- What is Peggy Wanner-Barjenbruch's phone number?
- The practice phone number listed in the NPPES registry for Peggy Wanner-Barjenbruch is (573) 581-8500.
- Does Peggy Wanner-Barjenbruch accept Medicare?
- Peggy Wanner-Barjenbruch is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peggy Wanner-Barjenbruch's NPI active?
- Yes — Peggy Wanner-Barjenbruch's NPI (1326023185) is active in the NPPES registry as of the last update on 2022-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.