Dr. Boris Reznik, MD
- Medicare services, 2024
- 279
- Medicare patients, 2024
- 209
- Part D claims, 2024
- 579
- Publications
- 3
- MIPS score, 2024
- 100
- Practice address
- 115 Mall Drive, Hanford, CA 93230
- Practice phone
- Call (559) 582-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Reznik's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Boris Reznik is a gastroenterologist in Hanford, California
Dr. Reznik practices at Adventist Health Hanford in Hanford, California, part of Adventist Health.
Dr. Reznik's NPI, 1710087846, was assigned on September 25, 2006. Dr. Reznik graduated from Russian State Medical University in 1980. Dr. Reznik holds California license A91193.
- NPI
- 1710087846NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133156839
- NPI enumeration date
- September 25, 2006
- NPI status
- Active
- Practice phone
- (559) 582-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Boris Reznik practices at Adventist Health Hanford in Hanford, California
Dr. Reznik's primary practice is Adventist Health Hanford, at 115 Mall Drive, Hanford, CA 93230 in Kings County. The practice phone is (559) 582-9000.
- Adventist Health Hanford115 Mall Drive, Hanford, CA 93230 · Kings CountyPhone(559) 582-9000
Source: Dmand AI Affiliation Data
Dr. Boris Reznik is affiliated with 4 sites of care and 2 medical groups
Dr. Reznik's primary practice is Adventist Health Hanford in Hanford, California, part of Adventist Health. Dr. Reznik is also affiliated with Adventist Health Tulare. The medical group on file is Adventist Health Community Care-Hanford. Dmand AI also links Dr. Reznik to 1 more hospital, 1 rural health clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Boris Reznik's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Reznik practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Hanford | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Adventist Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Boris Reznik is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Reznik's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Reznik is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Reznik's licenses on file in 3 states: California, Utah and New Mexico.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Utah license
- New Mexico license
Clinical focus
Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver, gastroenteritis, gastrointestinal bleeding and hepatitis c among the conditions Dr. Reznik treats.
Gastroenterologists near Dr. Reznik
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Boris Reznik billed Medicare for 279 services in 2024
CMS data shows 279 Medicare services from Dr. Reznik across 9 procedure codes in 2024, for 209 Medicare patients. Medicare paid $30,009 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Reznik's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1712024: 1826%
- Office and hospital visits
- 2023: 592024: 648%
- Other services
- 2023: 752024: 3356%
Dr. Reznik compared with the California median for gastroenterologists, 2024
- Dr. Reznik
- California median
- Medicare services
- 279vs 58652% below
- Medicare patients
- 209vs 30231% below
- Part D claims
- 402vs 3806% above
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Reznik's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Reznik?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Reznik and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Boris Reznik treated 209 Medicare patients in 2024, average age 70
CMS counts 209 Medicare patients who saw Dr. Reznik in 2024. The largest group is 65 to 74, with 95 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 69% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Reznik's median patient age at 54, with 63% women.
Dr. Reznik's Medicare patients by age, 2024
Dr. Reznik's Medicare patients by sex, 2024
- Women11153%
- Men9847%
Chronic conditions among Dr. Reznik's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes47%
- Ischemic heart disease38%
- Chronic kidney disease28%
- Anxiety27%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Reznik's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Boris Reznik wrote 579 Medicare Part D claims in 2024
In 2024, Dr. Reznik wrote 579 Medicare Part D claims for 194 patients. 57% of them were for generic drugs. CMS names the drug for 402 of them, across 17 drugs with 11 or more claims each, at $342,135 in total drug cost. In 2023, CMS named 483 claims across 18 drugs.
Dr. Reznik's Part D claims by kind of drug, 2024
- Generic330 claims57%
- Brand-name249 claims43%
Dr. Reznik's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Reznik's Part D claims, 2024
- Antibiotics6%37 of 579 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4832024: 40217%
Drugs named by CMS: 17 in 2024, 18 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Boris Reznik scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Reznik for performance year 2024, reported as part of a group. CMS counts 197 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Reznik, more than 90% of the clinicians it reports for that procedure.
Dr. Reznik's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Quality
- 96of 100Promoting Interoperability
- 40of 100Improvement Activities
- 87of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Reznik ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 90th percentile197 procedures
- Colonoscopy
- 82nd percentile112 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Boris Reznik has 3 publications on record
Dmand AI links 3 papers to Dr. Reznik, published from 2014 to 2019. The most frequent topics are Gene Expression Regulation, Histones and RNA, Messenger.
Topics Dr. Reznik writes about most
- Gene Expression Regulation
- Histones
- RNA, Messenger
- RNA, Small Interfering
- RNA Stability
Recent publications by Dr. Reznik
Biochem Soc Trans
See who Dr. Reznik researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Reznik works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Boris Reznik received $10,958 in industry payments from 2016 to 2025
CMS Open Payments shows 443 general payments to Dr. Reznik from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Abbvie Inc. paid the most, $5,459.
General payments to Dr. Reznik by program year, 2016 to 2025
General payments to Dr. Reznik by kind, 2016 to 2025
- Food and beverage$10,41695%
- Speaker and faculty fees$2252%
- Travel and lodging$2222%
- Education$951%
Companies that paid Dr. Reznik the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Boris Reznik graduated from Russian State Medical University
Dr. Reznik graduated from Russian State Medical University in 1980.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Boris Reznik accepts plans from 6 insurance carriers
Dr. Reznik is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Blue Cross Blue Shield of Michigan
- CMS Medicare
- Humana
Plan types Dr. Reznik accepts, by number of carriers
- Medicare4
- PPO3
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Boris Reznik's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Boris Reznik
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Boris Reznik's NPI number?
Dr. Boris Reznik's NPI number is 1710087846. It was assigned on September 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Boris Reznik?
Dr. Boris Reznik is a gastroenterologist in Hanford, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Boris Reznik practice?
Dr. Reznik practices at 115 Mall Drive, Hanford, CA 93230. Dr. Reznik's primary practice is Adventist Health Hanford in Hanford, California, part of Adventist Health. Dmand AI also links Dr. Reznik to 1 hospital, 1 rural health clinic and 1 medical group.
What is Dr. Boris Reznik's office phone number?
The practice phone on file for Dr. Reznik is (559) 582-9000.
What is Dr. Boris Reznik's medical license number?
Dr. Reznik holds California license A91193, one of the licenses on file in 3 states.
Which states has Dr. Boris Reznik been licensed in?
Dmand AI has state licenses on file for Dr. Reznik in California (2005 to 2027), Utah (2003 to 2026) and New Mexico (2005 to 2009).
Which hospitals is Dr. Boris Reznik affiliated with?
Dr. Reznik practices at Adventist Health Hanford in Hanford, California. Dr. Reznik is also affiliated with Adventist Health Tulare. Dmand AI links Dr. Reznik to 1 more hospital.
What medical group is Dr. Boris Reznik part of?
Dr. Reznik is linked to Adventist Health Community Care-Hanford. Dmand AI links Dr. Reznik to 1 more medical group.
Does Dr. Boris Reznik accept Medicare?
Yes. CMS data shows Dr. Reznik billed Medicare for 279 services in 2024.
What is Dr. Boris Reznik's MIPS score?
Dr. Reznik's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Boris Reznik see?
CMS counts 209 Medicare patients who saw Dr. Reznik in 2024, with an average age of 70.
Is Dr. Boris Reznik board certified?
Yes. Dr. Reznik is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Boris Reznik bill to Medicare?
In 2024, Dr. Reznik's most billed Medicare services were surgery: digestive system (43239), hospital inpatient care (99222) and medicare service (G0121).
Where did Dr. Boris Reznik go to medical school?
Dr. Reznik graduated from Russian State Medical University in 1980.
What drugs does Dr. Boris Reznik prescribe most?
In 2024 Medicare Part D data, Dr. Reznik's most prescribed drugs by claims were Linzess, Omeprazole and Peg-3350 And Electrolytes.
Has Dr. Boris Reznik received payments from drug or device companies?
CMS Open Payments shows $10,958 in general payments to Dr. Reznik from 23 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Boris Reznik been practicing?
Dr. Reznik graduated from medical school in 1980, 46 years ago.
Does Dr. Boris Reznik do research?
Dmand AI links 3 publications to Dr. Reznik, published from 2014 to 2019.
What insurance does Dr. Boris Reznik accept?
Dr. Reznik is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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