Doctor profile · Federal record
Dr. Donald McMahon, D.O.
Gastroenterology Physician (CMS: Gastroenterology) · Student in an Organized Health Care Education/Training Program · Turnersville, NJ
- NPI 1285824839
- Accepts Medicare
- MIPS 90.3 / 100 · 2023
- 22 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
188 Fries Mill RD, Suite N-1
Turnersville, NJ 080122015
(856) 783-2241
fax (856) 783-2243 - Mailing address
-
570 Egg Harbor RD, Suite C-2
Sewell, NJ 080802359
Credentials & registration
- NPI registered
- July 2007 — 19 yrs on file
- Profile last updated
- January 19, 2017
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New Jersey #25MB0862200
- Medicaid
- NJ #0232793
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1285824839. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
293
Distinct HCPCS
8
Medicare allowed
$41,978
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 101 | 101 | $121 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 37 | 34 | $94 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 35 | 35 | $103 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 32 | 30 | $135 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 28 | 28 | $196 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 24 | 24 | $269 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 21 | 21 | $175 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 15 | 15 | $180 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 64. This provider delivers 4.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
303
Patients
66
Total drug cost
$269,126
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 72 | 23 | $1,170 |
| Omeprazole | Generic | 59 | 19 | $1,097 |
| Pantoprazole Sodium | Generic | 29 | 13 | $829 |
| Linzess (Linaclotide) | Brand | 23 | 0 | $24,479 |
| Ondansetron Odt (Ondansetron) | Brand | 22 | 0 | $293 |
| Dicyclomine Hcl | Generic | 19 | 11 | $767 |
| Humira Pen (Adalimumab) | Brand | 16 | 0 | $231,138 |
| Esomeprazole Magnesium | Generic | 15 | 0 | $560 |
| Betamethasone Diprop Augmented (Betamethasone/Propylene Glyc) | Brand | 13 | 0 | $1,322 |
| Mesalamine | Generic | 13 | 0 | $3,999 |
Hospital affiliations
Frequently asked questions
What is Dr. Donald McMahon's medical specialty?
Dr. Donald McMahon practices Gastroenterology Physician in Turnersville, NJ.
Where does Dr. Donald McMahon practice?
Dr. Donald McMahon practices at 188 Fries Mill RD, Turnersville, NJ 080122015. Office phone: 8567832241.
What is Dr. Donald McMahon's NPI?
Dr. Donald McMahon's National Provider Identifier (NPI) is 1285824839, issued by NPPES.
Does Dr. Donald McMahon accept Medicare assignment?
Yes. Dr. Donald McMahon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Donald McMahon commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.