Dr. Wen Sun S. Lum, MD
- Medicare services, 2024
- 281
- Medicare patients, 2024
- 286
- Part D claims, 2022
- 49
- Hospital affiliations
- 3
- Medical group
- 1
- Practice address
- 615 N Michigan St, South Bend, IN 46601
- Practice phone
- Call (574) 647-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lum's professional email, personal email and mobile number
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Dr. Wen Sun S. Lum is an internist in South Bend, Indiana
Dr. Lum practices at Memorial Hospital of South Bend in South Bend, Indiana, part of Beacon Health System.
Dr. Lum's NPI, 1497781124, was assigned on June 24, 2006. Dr. Lum holds Indiana license 01068990A.
- NPI
- 1497781124NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517977788
- NPI enumeration date
- June 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (574) 647-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- 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. Wen Sun S. Lum practices at Memorial Hospital of South Bend in South Bend, Indiana
Dr. Lum's primary practice is Memorial Hospital of South Bend, at 615 N Michigan St, South Bend, IN 46601 in St. Joseph County. The practice phone is (574) 647-1000.
- Memorial Hospital of South Bend615 N Michigan St, South Bend, IN 46601 · St. Joseph CountyPhone(574) 647-1000
Source: Dmand AI Affiliation Data
Dr. Wen Sun S. Lum is affiliated with 3 sites of care and 1 medical group
Dr. Lum's primary practice is Memorial Hospital of South Bend in South Bend, Indiana, part of Beacon Health System. Dr. Lum is also affiliated with Community Hospital of Bremen. The medical group on file is Beacon Medical Group Schwartz-Wiekamp. Dmand AI also links Dr. Lum to 1 more hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Wen Sun S. Lum's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lum practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Hospital of South Bend | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Wen Sun S. Lum is one of 1,987 internists in Indiana
Internal medicine is Dr. Lum's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lum is licensed in Indiana.
Specialties and state licenses
- Internal medicine, IndianaPrimary
Internists near Dr. Lum
Counts of internists 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. Wen Sun S. Lum billed Medicare for 281 services in 2024
CMS data shows 281 Medicare services from Dr. Lum across 2 procedure codes in 2024, for 286 Medicare patients. Medicare paid $31,845 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lum's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3552024: 28121%
Dr. Lum compared with the Indiana median for internists, 2024
- Dr. Lum
- Indiana median
- Medicare services
- 281vs 52046% below
- Medicare patients
- 286vs 21235% above
- Part D claims
- 49vs 15969% below
Medians across 1,948 internists in Indiana with Dmand AI profiles that report each measure.
Dr. Lum'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lum and other internists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Wen Sun S. Lum treated 286 Medicare patients in 2024, average age 75
CMS counts 286 Medicare patients who saw Dr. Lum in 2024. The largest group is 75 to 84, with 94 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.99, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lum's median patient age at 76, with 59% women.
Dr. Lum's Medicare patients by age, 2024
Dr. Lum's Medicare patients by sex, 2024
- Women15454%
- Men13246%
Chronic conditions among Dr. Lum's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Mood disorders45%
- Depression43%
- Ischemic heart disease43%
- Chronic kidney disease42%
- Heart failure41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lum's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Wen Sun S. Lum wrote 49 Medicare Part D claims in 2022
In 2022, Dr. Lum wrote 49 Medicare Part D claims. They cover 4 drugs, with $8,436 in total drug cost. In 2021, CMS named 13 claims across 1 drug.
Dr. Lum's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 132022: 49277%
Drugs named by CMS: 4 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Wen Sun S. Lum takes part in Medicare
Dr. Lum accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Wen Sun S. Lum'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 DataDmand AI Org Hierarchy 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Wen Sun S. Lum
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. Wen Sun S. Lum's NPI number?
Dr. Wen Sun S. Lum's NPI number is 1497781124. It was assigned on June 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Wen Sun S. Lum?
Dr. Wen Sun S. Lum is an internist in South Bend, Indiana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Wen Sun S. Lum practice?
Dr. Lum practices at 615 N Michigan St, South Bend, IN 46601. Dr. Lum's primary practice is Memorial Hospital of South Bend in South Bend, Indiana, part of Beacon Health System. Dmand AI also links Dr. Lum to 1 hospital.
What is Dr. Wen Sun S. Lum's office phone number?
The practice phone on file for Dr. Lum is (574) 647-1000.
What is Dr. Wen Sun S. Lum's medical license number?
Dr. Lum holds Indiana license 01068990A.
Which hospitals is Dr. Wen Sun S. Lum affiliated with?
Dr. Lum practices at Memorial Hospital of South Bend in South Bend, Indiana. Dr. Lum is also affiliated with Community Hospital of Bremen. Dmand AI links Dr. Lum to 1 more hospital.
What medical group is Dr. Wen Sun S. Lum part of?
Dr. Lum is linked to Beacon Medical Group Schwartz-Wiekamp.
Does Dr. Wen Sun S. Lum accept Medicare?
Yes. CMS data shows Dr. Lum billed Medicare for 281 services in 2024, and Dr. Lum accepts Medicare assignment.
How many Medicare patients does Dr. Wen Sun S. Lum see?
CMS counts 286 Medicare patients who saw Dr. Lum in 2024, with an average age of 75.
What services does Dr. Wen Sun S. Lum bill to Medicare?
In 2024, Dr. Lum's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).
What drugs does Dr. Wen Sun S. Lum prescribe most?
In 2022 Medicare Part D data, Dr. Lum's most prescribed drugs by claims were Eliquis, Atorvastatin Calcium and Furosemide.
How long has Dr. Wen Sun S. Lum been practicing?
Dr. Lum graduated from medical school in 2002, 24 years ago.
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