William Wismer, DO
NPI 1346292406 · Gastroenterology Physician · Erie, PA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Wismer, DO is a Gastroenterology Physician provider in Erie, PA (NPI 1346292406).
Provider details
- NPI number
- 1346292406
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS-011918 (PA)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
305 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 Large Bowel Using a Flexible Endoscope45380 | 80 | $148 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 65 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 58 | $120 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 36 | $111 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 23 | $159 |
| Biopsy of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 454 | 103 |
| Colestipol Hcl | 61 | 17 |
| Omeprazole | 38 | — |
| Ustekinumabbrand: Stelara | 36 | — |
| Mesalamine | 32 | — |
| Famotidine | 24 | — |
| Linaclotidebrand: Linzess | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,526 across 119 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
Additional practice locations (1)
- 965 Shamrock LnCorry, PA 16407-9121Phone: (814) 665-8288
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2023-05-04
- Certified
- 2023-05-04
Frequently asked questions
- What is William Wismer's NPI number?
- William Wismer's National Provider Identifier (NPI) is 1346292406, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Wismer's specialty?
- William Wismer is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is William Wismer located?
- William Wismer's practice location on file with NPPES is 2010 W 38th St Uppr Level, Erie, PA 16508-2004.
- What is William Wismer's phone number?
- The practice phone number listed in the NPPES registry for William Wismer is (814) 866-3986.
- Does William Wismer accept Medicare?
- William Wismer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Wismer's NPI active?
- Yes — William Wismer's NPI (1346292406) is active in the NPPES registry as of the last update on 2023-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.