Jeffrey Andreini, MD
NPI 1235266735 · Gastroenterology Physician · Oshkosh, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Andreini, MD is a Gastroenterology Physician provider in Oshkosh, WI (NPI 1235266735).
Provider details
- NPI number
- 1235266735
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34104020 (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
19 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
207 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 78 | $229 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 36 | $94 |
| Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope43248 | 20 | $135 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 15 | $115 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 13 | $167 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 213 | 210 |
| Omeprazole | 83 | 35 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 71 | 71 |
| Mesalamine | 55 | 16 |
| Budesonidebrand: Budesonide Dr | 46 | 21 |
| Dicyclomine Hcl | 40 | 13 |
| Pantoprazole Sodium | 34 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,089 across 67 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
- 2007-02-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jeffrey Andreini's NPI number?
- Jeffrey Andreini's National Provider Identifier (NPI) is 1235266735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Andreini's specialty?
- Jeffrey Andreini is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Andreini located?
- Jeffrey Andreini's practice location on file with NPPES is 2700 W 9th Ave, Oshkosh, WI 54904-7247.
- What is Jeffrey Andreini's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Andreini is (920) 236-1630.
- Does Jeffrey Andreini accept Medicare?
- Jeffrey Andreini is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Andreini's NPI active?
- Yes — Jeffrey Andreini's NPI (1235266735) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.