Helen Lantz, MD
NPI 1639146301 · Gastroenterology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Lantz, MD is a Gastroenterology Physician provider in Milwaukee, WI (NPI 1639146301).
Provider details
- NPI number
- 1639146301
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 44307-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
216 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 55 | $127 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 43 | $91 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $82 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 19 | $114 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 18 | $218 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 228 | 71 |
| Famotidine | 124 | 46 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 63 | 62 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 62 | 59 |
| Pantoprazole Sodium | 50 | 20 |
| Rabeprazole Sodium | 27 | — |
| Linaclotidebrand: Linzess | 21 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-02
- Last updated
- 2026-01-26
- Certified
- 2026-01-26
Frequently asked questions
- What is Helen Lantz's NPI number?
- Helen Lantz's National Provider Identifier (NPI) is 1639146301, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Lantz's specialty?
- Helen Lantz is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Lantz located?
- Helen Lantz's practice location on file with NPPES is 2801 W Kinnickinnic River Pkwy Ste 1080, Milwaukee, WI 53215-3689.
- What is Helen Lantz's phone number?
- The practice phone number listed in the NPPES registry for Helen Lantz is (414) 908-6506.
- Does Helen Lantz accept Medicare?
- Helen Lantz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Lantz's NPI active?
- Yes — Helen Lantz's NPI (1639146301) is active in the NPPES registry as of the last update on 2026-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.