Dr. Chun K. Ryu, MD
- Part D claims, 2024
- 691
- Hospital affiliations
- 1
- Industry payments
- $624
- State licenses
- 2
- Year NPI issued
- 2008
- Practice address
- 12601 Garden Grove Blvd, Garden Grove, CA 92843
- Practice phone
- Call (714) 537-5160
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ryu'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. Chun K. Ryu is a psychiatrist in Garden Grove, California
Dr. Ryu practices at Garden Grove Hospital Medical Center in Garden Grove, California, part of Prime Healthcare Services.
Dr. Ryu's NPI, 1972775252, was assigned on March 27, 2008. Dr. Ryu graduated from Seoul National University College of Medicine in 1962. Dr. Ryu holds California license A25717.
- NPI
- 1972775252NPI Registry (opens in a new tab)
- NPI enumeration date
- March 27, 2008
- NPI status
- Active
- Practice phone
- (714) 537-5160
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1962
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Chun K. Ryu practices at Garden Grove Hospital Medical Center in Garden Grove, California
Dr. Ryu's primary practice is Garden Grove Hospital Medical Center, at 12601 Garden Grove Blvd, Garden Grove, CA 92843 in Orange County. The practice phone is (714) 537-5160.
- Garden Grove Hospital Medical Center12601 Garden Grove Blvd, Garden Grove, CA 92843 · Orange CountyPhone(714) 537-5160
Source: Dmand AI Affiliation Data
Dr. Chun K. Ryu is affiliated with 1 site of care
Dr. Ryu's primary practice is Garden Grove Hospital Medical Center in Garden Grove, California, part of Prime Healthcare Services.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chun K. Ryu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ryu practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Garden Grove Hospital Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Prime Healthcare Services and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Chun K. Ryu is one of 6,803 psychiatrists in California
Psychiatry is Dr. Ryu's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Ryu is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Ryu's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
- Illinois license
Psychiatrists near Dr. Ryu
Counts of psychiatrists 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. Chun K. Ryu's patients have a median age of 49
Across all payers, Dmand AI patient panel data puts Dr. Ryu's median patient age at 49, with 31% women.
Dr. Ryu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women31%
- Men69%
Source: Dmand AI Patient Panel Data
Dr. Chun K. Ryu wrote 691 Medicare Part D claims in 2024
In 2024, Dr. Ryu wrote 691 Medicare Part D claims for 13 patients. 95% of them were for generic drugs. CMS names the drug for 555 of them, across 21 drugs with 11 or more claims each, at $68,902 in total drug cost. In 2023, CMS named 429 claims across 14 drugs.
Dr. Ryu's Part D claims by kind of drug, 2024
- Generic656 claims95%
- Brand-name35 claims5%
Dr. Ryu'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4292024: 55529%
Drugs named by CMS: 21 in 2024, 14 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
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Dr. Chun K. Ryu received $624 in industry payments from 2016 to 2025
CMS Open Payments shows 13 general payments to Dr. Ryu from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $147.
General payments to Dr. Ryu by program year, 2016 to 2025
Companies that paid Dr. Ryu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chun K. Ryu graduated from Seoul National University College of Medicine
Dr. Ryu graduated from Seoul National University College of Medicine in 1962.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Sources for Dr. Chun K. Ryu'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Chun K. Ryu
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. Chun K. Ryu's NPI number?
Dr. Chun K. Ryu's NPI number is 1972775252. It was assigned on March 27, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Chun K. Ryu?
Dr. Chun K. Ryu is a psychiatrist in Garden Grove, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Chun K. Ryu practice?
Dr. Ryu practices at 12601 Garden Grove Blvd, Garden Grove, CA 92843. Dr. Ryu's primary practice is Garden Grove Hospital Medical Center in Garden Grove, California, part of Prime Healthcare Services.
What is Dr. Chun K. Ryu's office phone number?
The practice phone on file for Dr. Ryu is (714) 537-5160.
What is Dr. Chun K. Ryu's medical license number?
Dr. Ryu holds California license A25717, one of the licenses on file in 2 states.
Which states has Dr. Chun K. Ryu been licensed in?
Dmand AI has state licenses on file for Dr. Ryu in California (1973 to 2027) and Illinois (since 1972).
Which hospitals is Dr. Chun K. Ryu affiliated with?
Dr. Ryu practices at Garden Grove Hospital Medical Center in Garden Grove, California.
Is Dr. Chun K. Ryu board certified?
Yes. Dr. Ryu is board certified in psychiatry by the American Board of Psychiatry and Neurology.
Where did Dr. Chun K. Ryu go to medical school?
Dr. Ryu graduated from Seoul National University College of Medicine in 1962.
What drugs does Dr. Chun K. Ryu prescribe most?
In 2024 Medicare Part D data, Dr. Ryu's most prescribed drugs by claims were Clozapine, Quetiapine Fumarate and Olanzapine.
Has Dr. Chun K. Ryu received payments from drug or device companies?
CMS Open Payments shows $624 in general payments to Dr. Ryu from 7 companies from 2016 to 2025. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Chun K. Ryu been practicing?
Dr. Ryu graduated from medical school in 1962, 64 years ago.
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