Dr. Hi Sup Sim, MD
- Medicare services, 2024
- 5,776
- Medicare patients, 2024
- 700
- Part D claims, 2024
- 10,001
- MIPS score, 2024
- 31
- Hospital affiliations
- 2
- Practice address
- 251 Lewis Lane, Suite 203, Havre De Grace, MD 21078
- Practice phone
- Call (443) 738-2872
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Summit Ambulatory Surgery Center - Havre de Grace
Surgery Center - Medicare-Certified · Havre De Grace, Maryland
Find Dr. Sim's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Hi Sup Sim is an internist in Havre De Grace, Maryland
Dr. Sim practices at Summit Ambulatory Surgery Center - Havre de Grace in Havre De Grace, Maryland.
Dr. Sim's NPI, 1659320505, was assigned on May 9, 2006. Dr. Sim holds Maryland license D0046412.
- NPI
- 1659320505NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012932338
- NPI enumeration date
- May 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (443) 738-2872
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hi Sup Sim practices at Summit Ambulatory Surgery Center - Havre de Grace in Havre De Grace, Maryland
Dr. Sim's primary practice is Summit Ambulatory Surgery Center - Havre de Grace, at 251 Lewis Lane, Suite 203, Havre De Grace, MD 21078. The practice phone is (443) 738-2872.
- Summit Ambulatory Surgery Center - Havre de Grace251 Lewis Lane, Suite 203, Havre De Grace, MD 21078Phone(443) 738-2872
Source: Dmand AI Affiliation Data
Dr. Hi Sup Sim is affiliated with 10 sites of care and 3 medical groups
Dr. Sim's primary practice is Summit Ambulatory Surgery Center - Havre de Grace in Havre De Grace, Maryland. Dr. Sim is also affiliated with University of Maryland Upper Chesapeake Medical Center Bel Air. The medical group on file is Agape Physical Therapy. Dmand AI also links Dr. Sim to 1 more hospital, 3 group practices and clinics, 3 home health agencies, 2 medical groups and 1 skilled nursing facility, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Hi Sup Sim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sim practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Ambulatory Surgery Center - Havre de Grace | Available with a free account |
| +9 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hi Sup Sim is one of 3,320 internists in Maryland
Internal medicine is Dr. Sim's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Sim is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Sim
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. Hi Sup Sim billed Medicare for 5,776 services in 2024
CMS data shows 5,776 Medicare services from Dr. Sim across 27 procedure codes in 2024, for 700 Medicare patients. Medicare paid $274,697 for them.
Dr. Sim's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4,1012024: 4,4138%
- Other services
- 2023: 7142024: 79511%
- Tests and treatments
- 2023: 7552024: 34754%
- Lab and pathology
- 2023: 3092024: 17643%
- Surgery
- 2023: 232024: 4596%
Where Dr. Sim's Medicare services took place, 2024
- In an office3,52261%
- In a facility2,25439%
Dr. Sim compared with the Maryland median for internists, 2024
- Dr. Sim
- Maryland median
- Medicare services
- 5,776vs 6568.8 times
- Medicare patients
- 700vs 2512.8 times
- Part D claims
- 9,171vs 30929.7 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Sim'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hi Sup Sim treated 700 Medicare patients in 2024, average age 77
CMS counts 700 Medicare patients who saw Dr. Sim in 2024. The largest group is 75 to 84, with 246 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sim's median patient age at 76, with 60% women.
Dr. Sim's Medicare patients by age, 2024
Dr. Sim's Medicare patients by sex, 2024
- Women44363%
- Men25737%
Chronic conditions among Dr. Sim's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Anxiety40%
- Diabetes37%
- Mood disorders32%
- Ischemic heart disease31%
- Chronic kidney disease29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sim'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
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hi Sup Sim wrote 10,001 Medicare Part D claims in 2024
In 2024, Dr. Sim wrote 10,001 Medicare Part D claims for 727 patients. 88% of them were for generic drugs. CMS names the drug for 9,171 of them, across 154 drugs with 11 or more claims each, at $611,121 in total drug cost. In 2023, CMS named 7,264 claims across 140 drugs.
Dr. Sim's Part D claims by kind of drug, 2024
- Generic8,833 claims88%
- Brand-name1,111 claims11%
- Other57 claims1%
Dr. Sim'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. Sim's Part D claims, 2024
- Opioids2%155 of 10,001 claims
- Antibiotics5%535 of 10,001 claims
- Antipsychotics, patients 65 and over1%84 of 10,001 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: 7,2642024: 9,17126%
Drugs named by CMS: 154 in 2024, 140 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. Hi Sup Sim scored 31 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 31 out of 100 for Dr. Sim for performance year 2024, reported individually. Dr. Sim accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sim as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Sim's MIPS scores, performance year 2024
- 31of 100Final score
- 15of 100Quality
- 0of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Hi Sup Sim received $17,994 in industry payments from 2016 to 2025
CMS Open Payments shows 1,097 general payments to Dr. Sim from 55 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,204.
General payments to Dr. Sim by program year, 2016 to 2025
General payments to Dr. Sim by kind, 2016 to 2025
- Food and beverage$17,80399%
- Education$1691%
- Speaker and faculty fees$220%
Companies that paid Dr. Sim the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Hi Sup Sim's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Hi Sup Sim
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. Hi Sup Sim's NPI number?
Dr. Hi Sup Sim's NPI number is 1659320505. It was assigned on May 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hi Sup Sim?
Dr. Hi Sup Sim is an internist in Havre De Grace, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Hi Sup Sim practice?
Dr. Sim practices at 251 Lewis Lane, Suite 203, Havre De Grace, MD 21078. Dr. Sim's primary practice is Summit Ambulatory Surgery Center - Havre de Grace in Havre De Grace, Maryland. Dmand AI also links Dr. Sim to 1 hospital, 3 group practices and clinics, 3 home health agencies, 2 medical groups and 1 skilled nursing facility.
What is Dr. Hi Sup Sim's office phone number?
The practice phone on file for Dr. Sim is (443) 738-2872.
What is Dr. Hi Sup Sim's medical license number?
Dr. Sim holds Maryland license D0046412.
Which hospitals is Dr. Hi Sup Sim affiliated with?
Dr. Sim is affiliated with University of Maryland Upper Chesapeake Medical Center Bel Air. Dmand AI links Dr. Sim to 1 more hospital.
What medical group is Dr. Hi Sup Sim part of?
Dr. Sim is linked to Agape Physical Therapy. Dmand AI links Dr. Sim to 2 more medical groups.
Does Dr. Hi Sup Sim accept Medicare?
Yes. CMS data shows Dr. Sim billed Medicare for 5,776 services in 2024, and Dr. Sim accepts Medicare assignment.
Does Dr. Hi Sup Sim offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Sim as offering telehealth services.
What is Dr. Hi Sup Sim's MIPS score?
Dr. Sim's MIPS final score for performance year 2024 is 31 out of 100, reported individually.
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How many Medicare patients does Dr. Hi Sup Sim see?
CMS counts 700 Medicare patients who saw Dr. Sim in 2024, with an average age of 77.
What services does Dr. Hi Sup Sim bill to Medicare?
In 2024, Dr. Sim's most billed Medicare services were nursing facility care (99307), office visit, established patient (99214) and nursing facility care (99308).
What drugs does Dr. Hi Sup Sim prescribe most?
In 2024 Medicare Part D data, Dr. Sim's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Hi Sup Sim received payments from drug or device companies?
CMS Open Payments shows $17,994 in general payments to Dr. Sim from 55 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Hi Sup Sim been practicing?
Dr. Sim graduated from medical school in 1990, 36 years ago.
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