Doctor profile · Federal record
Dr. John Kolnik, D.O.
Gastroenterology Physician (CMS: Gastroenterology) · Specialist · Haddon Heights, NJ
- NPI 1902894496
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
217 White Horse Pike
Haddon Heights, NJ 080351703
(856) 547-1661
fax (856) 547-6117 - Additional location
-
1000 Atlantic Ave Ste 205B
Camden, NJ 081041132
(856) 237-8045
fax (856) 751-2333 - Mailing address
-
301 Lippincott Dr Ste 410
Marlton, NJ 080534197
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- February 23, 2026
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New Jersey #25MB06094100
- Medicaid
- NJ #727420303
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902894496. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,019
Distinct HCPCS
10
Medicare allowed
$133,749
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 201 | 102 | $84 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 188 | 168 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 181 | 157 | $137 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 90 | 90 | $163 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 89 | 89 | $99 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 78 | 78 | $267 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 57 | 55 | $139 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 53 | 53 | $120 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 33 | 33 | $187 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 25 | 25 | $180 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 70. This provider delivers 15× the peer median.Open Payments
Industry payments received
All-time total
$654
Transactions
47
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 22 | $257.33 | |
| ABBVIE INC. | 10 | $147.03 | |
| Boston Scientific Corporation | 1 | $40.21 | |
| Braintree Laboratories, Inc. | 2 | $29.91 | |
| Phathom Pharmaceuticals, Inc. | 2 | $29.28 | |
| PFIZER INC. | 2 | $29.23 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $28.89 | |
| Lilly USA, LLC | 2 | $27.95 | |
| Gilead Sciences, Inc. | 1 | $17.94 | |
| Intercept Pharmaceuticals, Inc. | 1 | $17.18 | |
| Ardelyx, Inc. | 1 | $15.69 | |
| QOL Medical, LLC | 1 | $13.64 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,825
Patients
622
Total drug cost
$216,177
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 504 | 157 | $8,377 |
| Pantoprazole Sodium | Generic | 263 | 93 | $4,799 |
| Famotidine | Generic | 197 | 71 | $3,537 |
| Dicyclomine Hcl | Generic | 151 | 59 | $5,232 |
| Esomeprazole Magnesium | Generic | 102 | 32 | $8,187 |
| Lansoprazole | Generic | 84 | 23 | $3,965 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 82 | 23 | $48,703 |
| Amitriptyline Hcl | Generic | 75 | 26 | $1,181 |
| Motegrity (Prucalopride Succinate) | Brand | 64 | 11 | $53,994 |
| Mesalamine | Generic | 63 | 14 | $45,705 |
Hospital affiliations
Frequently asked questions
What is Dr. John Kolnik's medical specialty?
Dr. John Kolnik practices Gastroenterology Physician in Haddon Heights, NJ.
Where does Dr. John Kolnik practice?
Dr. John Kolnik practices at 217 White Horse Pike, Haddon Heights, NJ 080351703. Office phone: 8565471661.
What is Dr. John Kolnik's NPI?
Dr. John Kolnik's National Provider Identifier (NPI) is 1902894496, issued by NPPES.
Does Dr. John Kolnik accept Medicare assignment?
Yes. Dr. John Kolnik accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Kolnik commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.