Doctor profile · Federal record
Dr. GEORGE KUNNACKAL JOHN, M.D., MSC
Gastroenterology Physician (CMS: INTERNAL MEDICINE) · Internal Medicine Physician · BALTIMORE, MD
- NPI 1639432834
- Accepts Medicare
- MIPS 86.7 / 100 · 2023
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 8 locations across 1 states.
- Primary practice
-
22 S GREENE ST
BALTIMORE, MD 212011544
(410) 328-5780
fax (410) 328-8315 - Mailing address
-
920 ELKRIDGE LANDING RD
LINTHICUM, MD 210902917
Maryland — 7 locations
- Additional location
-
100 West Rd Ste 115
Towson, MD 212042358
(410) 494-0144
fax (410) 494-0147 - Additional location
-
515 S Tollgate Rd Ste 100
Bel Air, MD 210145251
(443) 643-3050
fax (443) 643-1692 - Additional location
-
5890 Waterloo Rd
Columbia, MD 210452617
(667) 214-2100
fax (410) 799-9097 - Additional location
-
700 Geipe Rd
Catonsville, MD 212284147
(410) 753-2255
fax (410) 242-4404 - Additional location
-
7625 Maple Lawn Blvd Ste 110
Fulton, MD 207592565
(301) 490-5025
fax (301) 490-5260 - Additional location
-
800 Linden Ave Fl 9
Baltimore, MD 212014622
(410) 552-2539
fax (410) 255-8415 - Additional location
-
827 Linden Ave
Baltimore, MD 212014606
(410) 328-8730
Credentials & registration
- NPI registered
- June 2012 — 14 yrs on file
- Profile last updated
- June 30, 2025
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Maryland #D84345
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639432834. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,335
Distinct HCPCS
10
Medicare allowed
$194,249
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 262 | 206 | $131 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 210 | 210 | $125 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 170 | 168 | $95 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 149 | 149 | $252 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 109 | 104 | $132 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 85 | 67 | $130 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 54 | 50 | $92 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 46 | 38 | $81 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $171 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 37 | 37 | $184 |
In context: peer comparison
Among 49 peers in this city , average services per provider: 49. This provider delivers 27× the peer median.Open Payments
Industry payments received
All-time total
$1,248
Transactions
44
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 9 | $354.43 | |
| Ardelyx, Inc. | 3 | $159.25 | |
| Janssen Biotech, Inc. | 7 | $133.54 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 7 | $118.66 | |
| Intercept Pharmaceuticals, Inc. | 2 | $90.02 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 4 | $74.06 | |
| Ferring Pharmaceuticals Inc. | 1 | $66.15 | |
| QOL Medical, LLC | 2 | $64.51 | |
| PFIZER INC. | 3 | $54.11 | |
| Regeneron Healthcare Solutions, Inc. | 2 | $48.53 | |
| Gilead Sciences, Inc. | 2 | $43.65 | |
| GENZYME CORPORATION | 2 | $41.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,488
Patients
600
Total drug cost
$92,559
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 502 | 193 | $11,489 |
| Famotidine | Generic | 441 | 169 | $13,473 |
| Omeprazole | Generic | 123 | 44 | $3,182 |
| Sucralfate | Generic | 81 | 40 | $5,417 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 52 | 52 | $4,080 |
| Colestipol Hcl | Generic | 40 | 19 | $4,773 |
| Linzess (Linaclotide) | Brand | 40 | 12 | $32,315 |
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 36 | 34 | $676 |
| Metoclopramide Hcl | Generic | 35 | 14 | $215 |
| Hyoscyamine Sulfate | Generic | 28 | 0 | $975 |