Dr. John P. Kolnik, DO
- Medicare services, 2024
- 987
- Medicare patients, 2024
- 614
- Part D claims, 2024
- 2,448
- MIPS score, 2024
- 81
- Hospital affiliations
- 2
- Practice address
- 502 Centennial Blvd, Suite 1, Voorhees, NJ 08043
- Practice phone
- Call (856) 874-0790
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Centennial Surgery Center - Voorhees
Surgery Center - Medicare-Certified · Voorhees, New Jersey
Find Dr. Kolnik'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. John P. Kolnik is a gastroenterologist in Voorhees, New Jersey
Dr. Kolnik practices at Centennial Surgery Center - Voorhees in Voorhees, New Jersey.
Dr. Kolnik's NPI, 1902894496, was assigned on October 10, 2005. Dr. Kolnik graduated from Philadelphia College of Osteopathic Medicine in 1992. Dr. Kolnik holds New Jersey license 25MB06094100.
- NPI
- 1902894496NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436259603
- NPI enumeration date
- October 10, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (856) 874-0790
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John P. Kolnik practices at Centennial Surgery Center - Voorhees in Voorhees, New Jersey
Dr. Kolnik's primary practice is Centennial Surgery Center - Voorhees, at 502 Centennial Blvd, Suite 1, Voorhees, NJ 08043. The practice phone is (856) 874-0790.
- Centennial Surgery Center - Voorhees502 Centennial Blvd, Suite 1, Voorhees, NJ 08043Phone(856) 874-0790
Source: Dmand AI Affiliation Data
Dr. John P. Kolnik is affiliated with 4 sites of care and 1 medical group
Dr. Kolnik's primary practice is Centennial Surgery Center - Voorhees in Voorhees, New Jersey. Dr. Kolnik is also affiliated with Virtua Voorhees Hospital. The medical group on file is Virtua Medical Group. Dmand AI also links Dr. Kolnik to 1 more hospital and 1 group practice or clinic, 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. John P. Kolnik's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kolnik practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Centennial Surgery Center - Voorhees | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John P. Kolnik is one of 691 gastroenterologists in New Jersey
Gastroenterology is Dr. Kolnik's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Kolnik is licensed in New Jersey.
Specialties and state licenses
- Gastroenterology, New JerseyPrimary
Gastroenterologists near Dr. Kolnik
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. John P. Kolnik billed Medicare for 987 services in 2024
CMS data shows 987 Medicare services from Dr. Kolnik across 12 procedure codes in 2024, for 614 Medicare patients. Medicare paid $101,252 for them.
Dr. Kolnik's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7292024: 6895%
- Surgery
- 2023: 2902024: 2983%
Where Dr. Kolnik's Medicare services took place, 2024
- In an office46747%
- In a facility52053%
Dr. Kolnik compared with the New Jersey median for gastroenterologists, 2024
- Dr. Kolnik
- New Jersey median
- Medicare services
- 987vs 68544% above
- Medicare patients
- 614vs 37564% above
- Part D claims
- 2,151vs 6113.5 times
Medians across 674 gastroenterologists in New Jersey with Dmand AI profiles that report each measure.
Dr. Kolnik'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kolnik and other gastroenterologists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John P. Kolnik treated 614 Medicare patients in 2024, average age 74
CMS counts 614 Medicare patients who saw Dr. Kolnik in 2024. The largest group is 65 to 74, with 298 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Kolnik's median patient age at 66, with 49% women.
Dr. Kolnik's Medicare patients by age, 2024
Dr. Kolnik's Medicare patients by sex, 2024
- Women31251%
- Men30249%
Chronic conditions among Dr. Kolnik's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease35%
- Diabetes33%
- Anxiety27%
- Chronic kidney disease24%
- Atrial fibrillation23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Kolnik's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women49%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John P. Kolnik wrote 2,448 Medicare Part D claims in 2024
In 2024, Dr. Kolnik wrote 2,448 Medicare Part D claims for 567 patients. 86% of them were for generic drugs. CMS names the drug for 2,151 of them, across 42 drugs with 11 or more claims each, at $570,315 in total drug cost. In 2023, CMS named 2,221 claims across 37 drugs.
Dr. Kolnik's Part D claims by kind of drug, 2024
- Generic2,117 claims86%
- Brand-name and other331 claims14%
Dr. Kolnik'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. Kolnik's Part D claims, 2024
- Opioids1%17 of 2,448 claims
- Antibiotics2%57 of 2,448 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: 2,2212024: 2,1513%
Drugs named by CMS: 42 in 2024, 37 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. John P. Kolnik scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Kolnik for performance year 2024, reported as part of a group. Dr. Kolnik accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 132 procedures of colonoscopy by Dr. Kolnik, more than 86% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Kolnik's MIPS scores, performance year 2024
- 81of 100Final score
- 62.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Kolnik ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 83rd percentile138 procedures
- Colonoscopy
- 86th percentile132 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); 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. John P. Kolnik received $172,024 in industry payments from 2016 to 2025
CMS Open Payments shows 990 general payments to Dr. Kolnik from 39 drug and device companies from 2016 to 2025. Honoraria make up the largest share, 69% of the total. Horizon Pharma plc paid the most, $135,954.
General payments to Dr. Kolnik by program year, 2016 to 2025
General payments to Dr. Kolnik by kind, 2016 to 2025
- Honoraria$118,37069%
- Speaker and faculty fees$20,90012%
- Travel and lodging$18,73111%
- Food and beverage$13,8478%
- Education$1760%
Companies that paid Dr. Kolnik 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. John P. Kolnik graduated from Philadelphia College of Osteopathic Medicine
Dr. Kolnik graduated from Philadelphia College of Osteopathic Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John P. Kolnik'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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. John P. Kolnik
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. John P. Kolnik's NPI number?
Dr. John P. Kolnik's NPI number is 1902894496. It was assigned on October 10, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John P. Kolnik?
Dr. John P. Kolnik is a gastroenterologist in Voorhees, New Jersey. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. John P. Kolnik practice?
Dr. Kolnik practices at 502 Centennial Blvd, Suite 1, Voorhees, NJ 08043. Dr. Kolnik's primary practice is Centennial Surgery Center - Voorhees in Voorhees, New Jersey. Dmand AI also links Dr. Kolnik to 1 hospital and 1 group practice or clinic.
What is Dr. John P. Kolnik's office phone number?
The practice phone on file for Dr. Kolnik is (856) 874-0790.
What is Dr. John P. Kolnik's medical license number?
Dr. Kolnik holds New Jersey license 25MB06094100.
Which hospitals is Dr. John P. Kolnik affiliated with?
Dr. Kolnik is affiliated with Virtua Voorhees Hospital. Dmand AI links Dr. Kolnik to 1 more hospital.
What medical group is Dr. John P. Kolnik part of?
Dr. Kolnik is linked to Virtua Medical Group.
Does Dr. John P. Kolnik accept Medicare?
Yes. CMS data shows Dr. Kolnik billed Medicare for 987 services in 2024, and Dr. Kolnik accepts Medicare assignment.
What is Dr. John P. Kolnik's MIPS score?
Dr. Kolnik's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. John P. Kolnik see?
CMS counts 614 Medicare patients who saw Dr. Kolnik in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. John P. Kolnik bill to Medicare?
In 2024, Dr. Kolnik's most billed Medicare services were office visit, established patient (99213), hospital inpatient care (99232) and office visit, established patient (99214).
Where did Dr. John P. Kolnik go to medical school?
Dr. Kolnik graduated from Philadelphia College of Osteopathic Medicine in 1992.
What drugs does Dr. John P. Kolnik prescribe most?
In 2024 Medicare Part D data, Dr. Kolnik's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Famotidine.
Has Dr. John P. Kolnik received payments from drug or device companies?
CMS Open Payments shows $172,024 in general payments to Dr. Kolnik from 39 companies from 2016 to 2025. The largest total came from Horizon Pharma plc.
How long has Dr. John P. Kolnik been practicing?
Dr. Kolnik graduated from medical school in 1992, 34 years ago.
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