Zachary Kwasnicka, D.O.
NPI 1144684945 · Internal Medicine Physician · Warren, OH
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Kwasnicka, D.O. is a Internal Medicine Physician provider in Warren, OH (NPI 1144684945).
Provider details
- NPI number
- 1144684945
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 58.00741 (OH)
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
10 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
278 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 51 | $124 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 38 | $138 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 38 | $159 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 37 | $238 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 32 | $92 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 65 | 31 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 49 | 48 |
| Omeprazole | 36 | — |
| Linaclotidebrand: Linzess | 31 | — |
| Colestipol Hcl | 30 | — |
| Mesalamine | 17 | — |
| Loperamide Hclbrand: Loperamide | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,000 across 58 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
- 2016-04-07
- Last updated
- 2017-03-27
Frequently asked questions
- What is Zachary Kwasnicka's NPI number?
- Zachary Kwasnicka's National Provider Identifier (NPI) is 1144684945, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Kwasnicka's specialty?
- Zachary Kwasnicka is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Kwasnicka located?
- Zachary Kwasnicka's practice location on file with NPPES is 1296 Tod Pl Nw, Warren, OH 44485-2474.
- What is Zachary Kwasnicka's phone number?
- The practice phone number listed in the NPPES registry for Zachary Kwasnicka is (330) 841-4643.
- Does Zachary Kwasnicka accept Medicare?
- Zachary Kwasnicka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Kwasnicka's NPI active?
- Yes — Zachary Kwasnicka's NPI (1144684945) is active in the NPPES registry as of the last update on 2017-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.