Doctor profile · Federal record
Dr. Eva Sum, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · West Chester, PA
- NPI 1679735518
- Accepts Medicare
- 24 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
915 Old Fern Hill RD, Building B Suite 300
West Chester, PA 193804269
(610) 431-3122
fax (610) 431-4799
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- August 26, 2015
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Pennsylvania #MD431793
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1679735518. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,884
Distinct HCPCS
10
Medicare allowed
$160,882
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1745 |
Injection, infliximab, excludes biosimilar, 10 mg | 920 | 13 | $33 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 197 | 147 | $133 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 173 | 172 | $84 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 173 | 172 | $258 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 141 | 138 | $94 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 55 | 55 | $173 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 52 | 45 | $94 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 51 | 36 | $81 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 37 | 37 | $134 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 25 | 18 | $51 |
In context: peer comparison
Among 3 peers in West Chester Gastroenterology Physician, average services per provider: 80. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$1,746
Transactions
86
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 31 | $481.56 | |
| Janssen Biotech, INC. | 12 | $289.50 | |
| Takeda Pharmaceuticals U.S.A., INC. | 10 | $214.37 | |
| Celgene Corporation | 6 | $116.50 | |
| Pfizer INC. | 4 | $78.79 | |
| Genzyme Corporation | 3 | $78.44 | |
| Regeneron Healthcare Solutions, INC. | 3 | $69.92 | |
| Celltrion USA INC. | 3 | $65.73 | |
| Lilly USA, LLC | 3 | $60.93 | |
| Phathom Pharmaceuticals, INC. | 3 | $50.84 | |
| Aimmune Therapeutics, INC. | 2 | $42.57 | |
| Ferring Pharmaceuticals INC. | 2 | $35.62 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 2 | $33.74 | |
| Madrigal Pharmaceuticals | 1 | $29.59 | |
| Ipsen Biopharmaceuticals, INC | 1 | $25.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
655
Patients
231
Total drug cost
$172,080
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 256 | 99 | $5,395 |
| Omeprazole | Generic | 181 | 70 | $2,876 |
| Pantoprazole Sodium | Generic | 51 | 18 | $1,042 |
| Linzess (Linaclotide) | Brand | 48 | 15 | $56,283 |
| Zenpep (Lipase/Protease/Amylase) | Brand | 28 | 0 | $99,686 |
| Ondansetron Odt (Ondansetron) | Brand | 23 | 0 | $798 |
| Dicyclomine Hcl | Generic | 20 | 13 | $855 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 16 | 0 | $932 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 16 | 16 | $2,762 |
| Esomeprazole Magnesium | Generic | 16 | 0 | $1,452 |
Hospital affiliations
Frequently asked questions
What is Dr. Eva Sum's medical specialty?
Dr. Eva Sum practices Gastroenterology Physician in West Chester, PA.
Where does Dr. Eva Sum practice?
Dr. Eva Sum practices at 915 Old Fern Hill RD, West Chester, PA 193804269. Office phone: 6104313122.
What is Dr. Eva Sum's NPI?
Dr. Eva Sum's National Provider Identifier (NPI) is 1679735518, issued by NPPES.
Does Dr. Eva Sum accept Medicare assignment?
Yes. Dr. Eva Sum accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Eva Sum commonly perform?
Top Medicare-reported procedures in 2023: Injection, infliximab, excludes biosimilar, 10 mg (HCPCS J1745); Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380). Source: CMS Medicare Physician & Other Practitioners file.