Dr. Alexander Sang-Hyun Lee, MD
- Medicare services, 2024
- 136
- Medicare patients, 2024
- 93
- Part D claims, 2024
- 154
- Hospital affiliations
- 5
- Industry payments
- $67
- Practice address
- 5451 Walnut Ave, Chino, CA 91710
- Practice phone
- Call (909) 627-6111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lee's professional email, personal email and mobile number
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Dr. Alexander Sang-Hyun Lee is an emergency medicine physician in Chino, California
Dr. Lee practices at Chino Valley Medical Center in Chino, California, part of Prime Healthcare Services.
Dr. Lee's NPI, 1083658884, was assigned on June 15, 2006. Dr. Lee graduated from Virginia Commonwealth University, School of Medicine in 1996. Dr. Lee holds California license A77568.
- NPI
- 1083658884NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951207323
- NPI enumeration date
- June 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 627-6111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander Sang-Hyun Lee practices at Chino Valley Medical Center in Chino, California
Dr. Lee's primary practice is Chino Valley Medical Center, at 5451 Walnut Ave, Chino, CA 91710 in San Bernardino County. The practice phone is (909) 627-6111.
- Chino Valley Medical Center5451 Walnut Ave, Chino, CA 91710 · San Bernardino CountyPhone(909) 627-6111
Source: Dmand AI Affiliation Data
Dr. Alexander Sang-Hyun Lee is affiliated with 6 sites of care and 8 medical groups
Dr. Lee's primary practice is Chino Valley Medical Center in Chino, California, part of Prime Healthcare Services. Dr. Lee is also affiliated with Providence St. Mary Medical Center. The medical group on file is Montclair Emergency Medical Associates. Dmand AI also links Dr. Lee to 3 more hospitals, 7 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander Sang-Hyun Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chino Valley Medical Center | Available with a free account |
| +5 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander Sang-Hyun Lee is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Lee is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Lee
Counts of emergency medicine physicians 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. Alexander Sang-Hyun Lee billed Medicare for 136 services in 2024
CMS data shows 136 Medicare services from Dr. Lee across 4 procedure codes in 2024, for 93 Medicare patients. Medicare paid $11,684 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lee's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 752024: 8919%
- Tests and treatments
- 2023: 142024: 47236%
Dr. Lee compared with the California median for emergency medicine physicians, 2024
- Dr. Lee
- California median
- Medicare services
- 136vs 26549% below
- Medicare patients
- 93vs 24362% below
- Part D claims
- 37vs 6240% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Lee'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. Alexander Sang-Hyun Lee treated 93 Medicare patients in 2024, average age 70
CMS counts 93 Medicare patients who saw Dr. Lee in 2024. The largest group is 65 to 74, with 41 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 75% are also on Medicaid. Their average risk score is 2.73, 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. Lee's median patient age at 42, with 58% women.
Dr. Lee's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lee's Medicare patients by sex, 2024
- Women4346%
- Men5054%
Chronic conditions among Dr. Lee's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Diabetes65%
- Arthritis46%
- Mood disorders45%
- Anxiety39%
- Depression39%
- Chronic kidney disease38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lee's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander Sang-Hyun Lee wrote 154 Medicare Part D claims in 2024
In 2024, Dr. Lee wrote 154 Medicare Part D claims for 87 patients. 95% of them were for generic drugs. CMS names the drug for 37 of them, across 3 drugs with 11 or more claims each, at $92 in total drug cost. In 2023, CMS named 35 claims across 2 drugs.
Dr. Lee's Part D claims by kind of drug, 2024
- Generic146 claims95%
- Brand-name and other8 claims5%
Dr. Lee'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. Lee's Part D claims, 2024
- Opioids9%14 of 154 claims
- Antibiotics28%43 of 154 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: 352024: 376%
Drugs named by CMS: 3 in 2024, 2 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. Alexander Sang-Hyun Lee takes part in Medicare
Dr. Lee 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. Alexander Sang-Hyun Lee received $67 in industry payments from 2017 to 2022
CMS Open Payments shows 2 general payments to Dr. Lee from 2 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $46.
General payments to Dr. Lee by program year, 2017 to 2022
Companies that paid Dr. Lee the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexander Sang-Hyun Lee graduated from Virginia Commonwealth University, School of Medicine
Dr. Lee graduated from Virginia Commonwealth University, School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexander Sang-Hyun Lee'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. Alexander Sang-Hyun Lee
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. Alexander Sang-Hyun Lee's NPI number?
Dr. Alexander Sang-Hyun Lee's NPI number is 1083658884. It was assigned on June 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander Sang-Hyun Lee?
Dr. Alexander Sang-Hyun Lee is an emergency medicine physician in Chino, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Alexander Sang-Hyun Lee practice?
Dr. Lee practices at 5451 Walnut Ave, Chino, CA 91710. Dr. Lee's primary practice is Chino Valley Medical Center in Chino, California, part of Prime Healthcare Services. Dmand AI also links Dr. Lee to 3 hospitals, 7 medical groups and 1 group practice or clinic.
What is Dr. Alexander Sang-Hyun Lee's office phone number?
The practice phone on file for Dr. Lee is (909) 627-6111.
What is Dr. Alexander Sang-Hyun Lee's medical license number?
Dr. Lee holds California license A77568.
Which hospitals is Dr. Alexander Sang-Hyun Lee affiliated with?
Dr. Lee practices at Chino Valley Medical Center in Chino, California. Dr. Lee is also affiliated with Providence St. Mary Medical Center. Dmand AI links Dr. Lee to 3 more hospitals.
What medical group is Dr. Alexander Sang-Hyun Lee part of?
Dr. Lee is linked to Montclair Emergency Medical Associates. Dmand AI links Dr. Lee to 7 more medical groups.
Does Dr. Alexander Sang-Hyun Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 136 services in 2024, and Dr. Lee accepts Medicare assignment.
How many Medicare patients does Dr. Alexander Sang-Hyun Lee see?
CMS counts 93 Medicare patients who saw Dr. Lee in 2024, with an average age of 70.
What services does Dr. Alexander Sang-Hyun Lee bill to Medicare?
In 2024, Dr. Lee's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and critical care (99291).
Show 4 more questionsShow fewer questions
Where did Dr. Alexander Sang-Hyun Lee go to medical school?
Dr. Lee graduated from Virginia Commonwealth University, School of Medicine in 1996.
What drugs does Dr. Alexander Sang-Hyun Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Prednisone, Meloxicam and Hydrocodone-Acetaminophen.
Has Dr. Alexander Sang-Hyun Lee received payments from drug or device companies?
CMS Open Payments shows $67 in general payments to Dr. Lee from 2 companies from 2017 to 2022. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Alexander Sang-Hyun Lee been practicing?
Dr. Lee graduated from medical school in 1996, 30 years ago.
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