Eva Sum, M.D.
NPI 1679735518 · Gastroenterology Physician · West Chester, PA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eva Sum, M.D. is a Gastroenterology Physician provider in West Chester, PA (NPI 1679735518).
Provider details
- NPI number
- 1679735518
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD431793 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,035 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 180 | $129 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 172 | $86 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 168 | $251 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 135 | $89 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 90 | $131 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 251 | 98 |
| Omeprazole | 189 | 82 |
| Pantoprazole Sodium | 55 | 22 |
| Dicyclomine Hcl | 38 | 14 |
| Linaclotidebrand: Linzess | 31 | — |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 30 | 30 |
| Lipase/Protease/Amylasebrand: Zenpep | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,746 across 90 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-01
- Last updated
- 2015-08-26
Frequently asked questions
- What is Eva Sum's NPI number?
- Eva Sum's National Provider Identifier (NPI) is 1679735518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eva Sum's specialty?
- Eva Sum is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Eva Sum located?
- Eva Sum's practice location on file with NPPES is 915 Old Fern Hill Rd, West Chester, PA 19380-4269.
- What is Eva Sum's phone number?
- The practice phone number listed in the NPPES registry for Eva Sum is (610) 431-3122.
- Does Eva Sum accept Medicare?
- Eva Sum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eva Sum's NPI active?
- Yes — Eva Sum's NPI (1679735518) is active in the NPPES registry as of the last update on 2015-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.