David Haller, MD
NPI 1548214463 · Gastroenterology Physician · Fond Du Lac, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Haller, MD is a Gastroenterology Physician provider in Fond Du Lac, WI (NPI 1548214463).
Provider details
- NPI number
- 1548214463
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 43137-020 (WI)
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
178 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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 53 | $45 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 27 | $85 |
| Balloon Dilation of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope, Less Than 3.0 Cm43249 | 26 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 20 | $61 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 18 | $130 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 408 | 123 |
| Sucralfate | 181 | 62 |
| Omeprazole | 150 | 43 |
| Lansoprazole | 108 | 34 |
| Ondansetron Hcl | 90 | 84 |
| Famotidine | 84 | 30 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 84 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,460 across 17 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
- 2006-05-22
- Last updated
- 2020-12-02
- Certified
- 2020-08-21
Frequently asked questions
- What is David Haller's NPI number?
- David Haller's National Provider Identifier (NPI) is 1548214463, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Haller's specialty?
- David Haller is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is David Haller located?
- David Haller's practice location on file with NPPES is 420 E Division St, Fond Du Lac, WI 54935-4560.
- What is David Haller's phone number?
- The practice phone number listed in the NPPES registry for David Haller is (920) 926-8570.
- Does David Haller accept Medicare?
- David Haller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Haller's NPI active?
- Yes — David Haller's NPI (1548214463) is active in the NPPES registry as of the last update on 2020-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.