Dr. Gyu Cheol Choi, MD
- Medicare services, 2024
- 1,290
- Medicare patients, 2024
- 357
- Part D claims, 2024
- 7,028
- Hospital affiliations
- 5
- Medical group
- 1
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Choi's professional email, personal email and mobile number
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Dr. Gyu Cheol Choi is an internist in Mendon, Massachusetts
Dr. Choi practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Choi's NPI, 1770036451, was assigned on July 28, 2016. Dr. Choi holds Massachusetts license 283576.
- NPI
- 1770036451NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345576914
- NPI enumeration date
- July 28, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gyu Cheol Choi practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Choi's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gyu Cheol Choi is affiliated with 12 sites of care and 1 medical group
Dr. Choi's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Choi is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Choi to 4 more hospitals, 5 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gyu Cheol Choi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Choi practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +11 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gyu Cheol Choi is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Choi's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Choi is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Choi
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. Gyu Cheol Choi billed Medicare for 1,290 services in 2024
CMS data shows 1,290 Medicare services from Dr. Choi across 15 procedure codes in 2024, for 357 Medicare patients. Medicare paid $52,949 for them.
Dr. Choi's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7652024: 8177%
- Other services
- 2023: 3232024: 42933%
- Tests and treatments
- 2023: 692024: 4436%
Where Dr. Choi's Medicare services took place, 2024
- In an office1,27699%
- In a facility141%
Dr. Choi compared with the Massachusetts median for internists, 2024
- Dr. Choi
- Massachusetts median
- Medicare services
- 1,290vs 4313.0 times
- Medicare patients
- 357vs 19484% above
- Part D claims
- 6,440vs 40216.0 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Choi'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. Gyu Cheol Choi treated 357 Medicare patients in 2024, average age 75
CMS counts 357 Medicare patients who saw Dr. Choi in 2024. The largest group is 65 to 74, with 152 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Choi's median patient age at 71, with 36% women.
Dr. Choi's Medicare patients by age, 2024
Dr. Choi's Medicare patients by sex, 2024
- Women13839%
- Men21961%
Chronic conditions among Dr. Choi's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis37%
- Ischemic heart disease29%
- Chronic kidney disease28%
- Bipolar disorder23%
- Diabetes23%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Choi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gyu Cheol Choi wrote 7,028 Medicare Part D claims in 2024
In 2024, Dr. Choi wrote 7,028 Medicare Part D claims for 614 patients. 91% of them were for generic drugs. CMS names the drug for 6,440 of them, across 112 drugs with 11 or more claims each, at $533,579 in total drug cost. In 2023, CMS named 5,944 claims across 102 drugs.
Dr. Choi's Part D claims by kind of drug, 2024
- Generic6,379 claims91%
- Brand-name630 claims9%
- Other19 claims0%
Dr. Choi'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. Choi's Part D claims, 2024
- Opioids1%97 of 7,028 claims
- Antibiotics2%143 of 7,028 claims
- Antipsychotics, patients 65 and over0%27 of 7,028 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: 5,9442024: 6,4408%
Drugs named by CMS: 112 in 2024, 102 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. Gyu Cheol Choi offers telehealth to Medicare patients
Dr. Choi accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Choi as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Gyu Cheol Choi'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Gyu Cheol Choi
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. Gyu Cheol Choi's NPI number?
Dr. Gyu Cheol Choi's NPI number is 1770036451. It was assigned on July 28, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Gyu Cheol Choi?
Dr. Gyu Cheol Choi is an internist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gyu Cheol Choi practice?
Dr. Choi practices at 55 North Ave, Mendon, MA 01756. Dr. Choi's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Choi to 4 hospitals, 5 home health agencies and 1 group practice or clinic.
What is Dr. Gyu Cheol Choi's office phone number?
The practice phone on file for Dr. Choi is (508) 334-1000.
What is Dr. Gyu Cheol Choi's medical license number?
Dr. Choi holds Massachusetts license 283576.
Which hospitals is Dr. Gyu Cheol Choi affiliated with?
Dr. Choi is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Choi to 4 more hospitals.
What medical group is Dr. Gyu Cheol Choi part of?
Dr. Choi is linked to UMass Memorial Medical Group.
Does Dr. Gyu Cheol Choi accept Medicare?
Yes. CMS data shows Dr. Choi billed Medicare for 1,290 services in 2024, and Dr. Choi accepts Medicare assignment.
Does Dr. Gyu Cheol Choi offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Choi as offering telehealth services.
How many Medicare patients does Dr. Gyu Cheol Choi see?
CMS counts 357 Medicare patients who saw Dr. Choi in 2024, with an average age of 75.
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What services does Dr. Gyu Cheol Choi bill to Medicare?
In 2024, Dr. Choi's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
What drugs does Dr. Gyu Cheol Choi prescribe most?
In 2024 Medicare Part D data, Dr. Choi's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Rosuvastatin Calcium.
How long has Dr. Gyu Cheol Choi been practicing?
Dr. Choi graduated from medical school in 2016, 10 years ago.
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