Dr. Grant Li-Young Chen, MD
- Medicare services, 2024
- 883
- Medicare patients, 2024
- 111
- Part D claims, 2024
- 370
- Hospital affiliations
- 1
- Industry payments
- $1,289
- Practice address
- 1301 Punchbowl St, Honolulu, HI 96813
- Practice phone
- Call (808) 538-9011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chen's professional email, personal email and mobile number
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Dr. Grant Li-Young Chen is a hospitalist in Honolulu, Hawaii
Dr. Chen practices at The Queen's Medical Center in Honolulu, Hawaii, part of The Queen's Health Systems.
Dr. Chen's NPI, 1962536946, was assigned on March 14, 2007. Dr. Chen graduated from University of Hawaii John A. Burns School of Medicine in 2004. Dr. Chen holds Hawaii license MD14305.
- NPI
- 1962536946NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002091915
- NPI enumeration date
- March 14, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 538-9011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Grant Li-Young Chen practices at The Queen's Medical Center in Honolulu, Hawaii
Dr. Chen's primary practice is The Queen's Medical Center, at 1301 Punchbowl St, Honolulu, HI 96813 in Honolulu County. The practice phone is (808) 538-9011.
- The Queen's Medical Center1301 Punchbowl St, Honolulu, HI 96813 · Honolulu CountyPhone(808) 538-9011
Source: Dmand AI Affiliation Data
Dr. Grant Li-Young Chen is affiliated with 2 sites of care
Dr. Chen's primary practice is The Queen's Medical Center in Honolulu, Hawaii, part of The Queen's Health Systems. Dmand AI also links Dr. Chen to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Grant Li-Young Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Queen's Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across The Queen's Health Systems and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Grant Li-Young Chen is one of 159 hospitalists in Hawaii
Hospitalist is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Chen is licensed in Hawaii.
Specialties and state licenses
- Hospitalist, HawaiiPrimary
Hospitalists near Dr. Chen
Counts of hospitalists 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. Grant Li-Young Chen billed Medicare for 883 services in 2024
CMS data shows 883 Medicare services from Dr. Chen across 3 procedure codes in 2024, for 111 Medicare patients. Medicare paid $83,630 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6272024: 88341%
Dr. Chen compared with the Hawaii median for hospitalists, 2024
- Dr. Chen
- Hawaii median
- Medicare services
- 883vs 2243.9 times
- Medicare patients
- 111vs 111Close to median
- Part D claims
- 180vs 782.3 times
Medians across 157 hospitalists in Hawaii with Dmand AI profiles that report each measure.
Dr. Chen'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. Grant Li-Young Chen treated 111 Medicare patients in 2024, average age 74
CMS counts 111 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 40 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 3.54, 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. Chen's median patient age at 71, with 39% women.
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women4944%
- Men6256%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease69%
- Diabetes59%
- Ischemic heart disease51%
- Arthritis39%
- Heart failure39%
- Atrial fibrillation34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen'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
- Women39%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Grant Li-Young Chen wrote 370 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 370 Medicare Part D claims for 118 patients. 87% of them were for generic drugs. CMS names the drug for 180 of them, across 9 drugs with 11 or more claims each, at $28,605 in total drug cost. In 2023, CMS named 144 claims across 7 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic323 claims87%
- Brand-name47 claims13%
Dr. Chen'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. Chen's Part D claims, 2024
- Opioids10%36 of 370 claims
- Antibiotics9%32 of 370 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: 1442024: 18025%
Drugs named by CMS: 9 in 2024, 7 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
How Dr. Grant Li-Young Chen takes part in Medicare
Dr. Chen 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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Dr. Grant Li-Young Chen received $1,289 in industry payments from 2018 to 2025
CMS Open Payments shows 17 general payments to Dr. Chen from 6 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $451.
General payments to Dr. Chen by program year, 2018 to 2025
Companies that paid Dr. Chen the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Grant Li-Young Chen graduated from University of Hawaii John A. Burns School of Medicine
Dr. Chen graduated from University of Hawaii John A. Burns School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Grant Li-Young Chen'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)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) |
| 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. Grant Li-Young Chen
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. Grant Li-Young Chen's NPI number?
Dr. Grant Li-Young Chen's NPI number is 1962536946. It was assigned on March 14, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Grant Li-Young Chen?
Dr. Grant Li-Young Chen is a hospitalist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Grant Li-Young Chen practice?
Dr. Chen practices at 1301 Punchbowl St, Honolulu, HI 96813. Dr. Chen's primary practice is The Queen's Medical Center in Honolulu, Hawaii, part of The Queen's Health Systems. Dmand AI also links Dr. Chen to 1 physician office.
What is Dr. Grant Li-Young Chen's office phone number?
The practice phone on file for Dr. Chen is (808) 538-9011.
What is Dr. Grant Li-Young Chen's medical license number?
Dr. Chen holds Hawaii license MD14305.
Which hospitals is Dr. Grant Li-Young Chen affiliated with?
Dr. Chen practices at The Queen's Medical Center in Honolulu, Hawaii.
Does Dr. Grant Li-Young Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 883 services in 2024, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. Grant Li-Young Chen see?
CMS counts 111 Medicare patients who saw Dr. Chen in 2024, with an average age of 74.
What services does Dr. Grant Li-Young Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Grant Li-Young Chen go to medical school?
Dr. Chen graduated from University of Hawaii John A. Burns School of Medicine in 2004.
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What drugs does Dr. Grant Li-Young Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Oxycodone HCl, Atorvastatin Calcium and Eliquis.
Has Dr. Grant Li-Young Chen received payments from drug or device companies?
CMS Open Payments shows $1,289 in general payments to Dr. Chen from 6 companies from 2018 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Grant Li-Young Chen been practicing?
Dr. Chen graduated from medical school in 2004, 22 years ago.
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