Boris Reznik, M.D.
NPI 1710087846 · Gastroenterology Physician · Hanford, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Boris Reznik, M.D. is a Gastroenterology Physician provider in Hanford, CA (NPI 1710087846).
Provider details
- NPI number
- 1710087846
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD2005-0407 (NM)
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 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
279 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 | 88 | $84 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 40 | $128 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 33 | $175 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 24 | $170 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 22 | $150 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Linaclotidebrand: Linzess | 75 | 20 |
| Omeprazole | 54 | 18 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 40 | 38 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 34 | 33 |
| Pantoprazole Sodium | 27 | 13 |
| Ursodiol | 19 | — |
| Furosemide | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$499 across 8 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
- 2006-09-25
- Last updated
- 2008-10-08
Frequently asked questions
- What is Boris Reznik's NPI number?
- Boris Reznik's National Provider Identifier (NPI) is 1710087846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Boris Reznik's specialty?
- Boris Reznik is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Boris Reznik located?
- Boris Reznik's practice location on file with NPPES is 470 Greenfield Ave Ste 37, Hanford, CA 93230-3513.
- What is Boris Reznik's phone number?
- The practice phone number listed in the NPPES registry for Boris Reznik is (559) 589-9460.
- Does Boris Reznik accept Medicare?
- Boris Reznik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Boris Reznik's NPI active?
- Yes — Boris Reznik's NPI (1710087846) is active in the NPPES registry as of the last update on 2008-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.