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Dr. Eva E. Sum, MD
NPI1679735518PAC ID4082776851
- Medicare services, 2024
- 1,035
- Medicare patients, 2024
- 560
- Part D claims, 2024
- 823
- Publications
- 4
- Hospital affiliations
- 5
- Practice address
- 915 Old Fern Hill Rd, West Chester, PA 19380
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
West Chester Endoscopy Center - HOPD
Acute Care Hospital outpatient department · West Chester, Pennsylvania
Find Dr. Sum's professional email, personal email and mobile number
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Dr. Eva E. Sum is a gastroenterologist in West Chester, Pennsylvania
Dr. Sum practices at West Chester Endoscopy Center - HOPD in West Chester, Pennsylvania.
Dr. Sum's NPI, 1679735518, was assigned on July 1, 2008. Dr. Sum graduated from University of Louisville School of Medicine in 2002. Dr. Sum holds Pennsylvania license MD431793.
NPI and contact details
- NPI
- 1679735518NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082776851
- NPI enumeration date
- July 1, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Eva E. Sum practices at West Chester Endoscopy Center - HOPD in West Chester, Pennsylvania
Dr. Sum's primary practice is West Chester Endoscopy Center - HOPD, at 915 Old Fern Hill Rd, West Chester, PA 19380.
- West Chester Endoscopy Center - HOPD915 Old Fern Hill Rd, West Chester, PA 19380
Source: Dmand AI Affiliation Data
Dr. Eva E. Sum is affiliated with 7 sites of care and 2 medical groups
Dr. Sum's primary practice is West Chester Endoscopy Center - HOPD in West Chester, Pennsylvania. Dr. Sum is also affiliated with Chester County Hospital. The medical group on file is Regional Gastroenterology Associates of Lancaster (RGAL). Dmand AI also links Dr. Sum to 4 more hospitals, 1 ambulatory surgery center and 1 medical group, each named with a free account.
West Chester Endoscopy Center - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Eva E. Sum's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sum practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| West Chester Endoscopy Center - HOPD | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eva E. Sum is one of 899 gastroenterologists in Pennsylvania
Gastroenterology is Dr. Sum's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Sum is licensed in Pennsylvania.
Specialties and state licenses
- Gastroenterology, PennsylvaniaPrimary
Gastroenterologists near Dr. Sum
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Eva E. Sum billed Medicare for 1,035 services in 2024
CMS data shows 1,035 Medicare services from Dr. Sum across 14 procedure codes in 2024, for 560 Medicare patients. Medicare paid $103,323 for them.
Medicare services, 20241,035
Medicare patients560
Paid by Medicare$103,323
Procedure codes14
Dr. Sum's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4282024: 51420%
- Surgery
- 2023: 4872024: 5054%
- Other services
- 2023: 152024: 167%
- Drugs given in the office
- 2023: 9202024: 0100%
- Tests and treatments
- 2023: 342024: 0100%
Where Dr. Sum's Medicare services took place, 2024
- In an office30029%
- In a facility73571%
Dr. Sum compared with the Pennsylvania median for gastroenterologists, 2024
- Dr. Sum
- Pennsylvania median
- Medicare services
- 1,035vs 4012.6 times
- Medicare patients
- 560vs 29490% above
- Part D claims
- 682vs 37582% above
Medians across 899 gastroenterologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Sum's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Sum?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sum and other gastroenterologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eva E. Sum treated 560 Medicare patients in 2024, average age 73
CMS counts 560 Medicare patients who saw Dr. Sum in 2024. The largest group is 65 to 74, with 294 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sum's median patient age at 63, with 65% women.
Medicare patients, 2024560
Average age73
Average risk score1.38
Also on Medicaid7%
Dr. Sum's Medicare patients by age, 2024
Dr. Sum's Medicare patients by sex, 2024
- Women37667%
- Men18433%
Chronic conditions among Dr. Sum's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis45%
- Ischemic heart disease32%
- Mood disorders31%
- Anxiety28%
- Depression27%
- Diabetes27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sum's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women65%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Eva E. Sum wrote 823 Medicare Part D claims in 2024
In 2024, Dr. Sum wrote 823 Medicare Part D claims for 283 patients. 84% of them were for generic drugs. CMS names the drug for 682 of them, across 12 drugs with 11 or more claims each, at $91,998 in total drug cost. In 2023, CMS named 655 claims across 10 drugs.
Part D claims, 2024823
Drugs named by CMS12
Total drug cost$91,998
Part D patients283
Dr. Sum's Part D claims by kind of drug, 2024
- Generic693 claims84%
- Brand-name130 claims16%
Dr. Sum's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Sum's Part D claims, 2024
- Antibiotics3%22 of 823 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6552024: 6824%
Drugs named by CMS: 12 in 2024, 10 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Eva E. Sum ranks in the 97th percentile for colonoscopy in Medicare
Dr. Sum accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 286 procedures of colonoscopy by Dr. Sum, more than 97% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Sum ranks in Medicare procedure volume
- Colonoscopy
- 97th percentile286 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 91st percentile213 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Eva E. Sum has 4 publications on record
Dmand AI links 4 papers to Dr. Sum in 2020. 2020 was the busiest year, with 2. The most frequent topics are Dendritic Cells. Dr. Sum's most frequent co-author is Daniel S. Chen, MD.
Papers4
Topics Dr. Sum writes about most
- Dendritic Cells
Dr. Sum's most frequent co-authors
Recent publications by Dr. Sum
Carcinoembryonic AntigenCD40 AntigensCD8-Positive T-Lymphocytes
See who Dr. Sum researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sum works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Eva E. Sum received $8,539 in industry payments from 2016 to 2025
CMS Open Payments shows 501 general payments to Dr. Sum from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $2,555.
General payments to Dr. Sum by program year, 2016 to 2025
General payments to Dr. Sum by kind, 2016 to 2025
$8.5Kin total
- Food and beverage$8,46899%
- Education$711%
Companies that paid Dr. Sum the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Eva E. Sum graduated from University of Louisville School of Medicine
Dr. Sum graduated from University of Louisville School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Eva E. Sum's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Eva E. Sum
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Eva E. Sum's NPI number?
Dr. Eva E. Sum's NPI number is 1679735518. It was assigned on July 1, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Eva E. Sum?
Dr. Eva E. Sum is a gastroenterologist in West Chester, Pennsylvania. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Eva E. Sum practice?
Dr. Sum practices at 915 Old Fern Hill Rd, West Chester, PA 19380. Dr. Sum's primary practice is West Chester Endoscopy Center - HOPD in West Chester, Pennsylvania. Dmand AI also links Dr. Sum to 4 hospitals, 1 ambulatory surgery center and 1 medical group.
What is Dr. Eva E. Sum's medical license number?
Dr. Sum holds Pennsylvania license MD431793.
Which hospitals is Dr. Eva E. Sum affiliated with?
Dr. Sum is affiliated with Chester County Hospital. Dmand AI links Dr. Sum to 4 more hospitals.
What medical group is Dr. Eva E. Sum part of?
Dr. Sum is linked to Regional Gastroenterology Associates of Lancaster (RGAL). Dmand AI links Dr. Sum to 1 more medical group.
Does Dr. Eva E. Sum accept Medicare?
Yes. CMS data shows Dr. Sum billed Medicare for 1,035 services in 2024, and Dr. Sum accepts Medicare assignment.
How many Medicare patients does Dr. Eva E. Sum see?
CMS counts 560 Medicare patients who saw Dr. Sum in 2024, with an average age of 73.
What services does Dr. Eva E. Sum bill to Medicare?
In 2024, Dr. Sum's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (45380) and surgery: digestive system (45385).
Where did Dr. Eva E. Sum go to medical school?
Dr. Sum graduated from University of Louisville School of Medicine in 2002.
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What drugs does Dr. Eva E. Sum prescribe most?
In 2024 Medicare Part D data, Dr. Sum's most prescribed drugs by claims were Famotidine, Omeprazole and Pantoprazole Sodium.
Has Dr. Eva E. Sum received payments from drug or device companies?
CMS Open Payments shows $8,539 in general payments to Dr. Sum from 43 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Eva E. Sum been practicing?
Dr. Sum graduated from medical school in 2002, 24 years ago.
Does Dr. Eva E. Sum do research?
Dmand AI links 4 publications to Dr. Sum.
Who does Dr. Eva E. Sum publish with?
Dr. Sum's most frequent co-authors are Daniel S. Chen, MD (1 shared paper).
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