William Blosky, M.D.
NPI 1740506195 · Gastroenterology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Blosky, M.D. is a Gastroenterology Physician provider in Milwaukee, WI (NPI 1740506195).
Provider details
- NPI number
- 1740506195
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 121652 (OH)
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 tenure28% of score
16 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
479 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 93 | $218 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 57 | $83 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $81 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 48 | $106 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 47 | $114 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 409 | 139 |
| Omeprazole | 222 | 69 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 178 | 176 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 167 | 163 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 68 | 67 |
| Budesonidebrand: Budesonide Dr | 62 | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-09
- Last updated
- 2026-01-26
- Certified
- 2026-01-26
Frequently asked questions
- What is William Blosky's NPI number?
- William Blosky's National Provider Identifier (NPI) is 1740506195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Blosky's specialty?
- William Blosky is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is William Blosky located?
- William Blosky's practice location on file with NPPES is 2801 W Kinnickinnic River Pkwy Ste 1080, Milwaukee, WI 53215-3689.
- What is William Blosky's phone number?
- The practice phone number listed in the NPPES registry for William Blosky is (414) 908-6506.
- Does William Blosky accept Medicare?
- William Blosky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Blosky's NPI active?
- Yes — William Blosky's NPI (1740506195) 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.