Dr. Christine Hyunsun Park, MD
- Medicare services, 2024
- 387
- Medicare patients, 2024
- 163
- Part D claims, 2024
- 1,109
- Hospital affiliations
- 2
- Industry payments
- $14,186
- Practice address
- 27700 Medical Center Rd, Mission Viejo, CA 92691
- Practice phone
- Call (949) 365-2447
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mission Hospital - Unit
Acute Care Hospital-Unit · Mission Viejo, California
Find Dr. Park's professional email, personal email and mobile number
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Dr. Christine Hyunsun Park is a rheumatologist in Mission Viejo, California
Dr. Park practices at Mission Hospital - Unit in Mission Viejo, California.
Dr. Park's NPI, 1003963364, was assigned on January 5, 2007. Dr. Park graduated from University of Illinois College of Medicine - Chicago in 1988. Dr. Park holds California license G073810.
- NPI
- 1003963364NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587737481
- NPI enumeration date
- January 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 365-2447
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christine Hyunsun Park practices at Mission Hospital - Unit in Mission Viejo, California
Dr. Park's primary practice is Mission Hospital - Unit, at 27700 Medical Center Rd, Mission Viejo, CA 92691 in Orange County. The practice phone is (949) 365-2447.
- Mission Hospital - Unit27700 Medical Center Rd, Mission Viejo, CA 92691 · Orange CountyPhone(949) 365-2447
Source: Dmand AI Affiliation Data
Dr. Christine Hyunsun Park is affiliated with 2 sites of care
Dr. Park's primary practice is Mission Hospital - Unit in Mission Viejo, California. Dr. Park is also affiliated with Providence Mission Hospital. Dr. Park's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Christine Hyunsun Park's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Park practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mission Hospital - Unit | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christine Hyunsun Park is one of 821 rheumatologists in California
Rheumatology is Dr. Park's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Park is board certified in rheumatology by the American Board of Internal Medicine. Dmand AI has Dr. Park's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
- Illinois license
Clinical focus
Dmand AI lists arteritis, arthritis, gout, joint arthropathy, lupus, muscle pain, fibromyalgia, and limb pain and rheumatoid arthritis among the conditions Dr. Park treats.
Rheumatologists near Dr. Park
Counts of rheumatologists 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. Christine Hyunsun Park billed Medicare for 387 services in 2024
CMS data shows 387 Medicare services from Dr. Park across 5 procedure codes in 2024, all of them office visits, for 163 Medicare patients. Medicare paid $34,015 for them. Every service was in an office.
Dr. Park's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3522024: 38710%
Dr. Park compared with the California median for rheumatologists, 2024
- Dr. Park
- California median
- Medicare services
- 387vs 90057% below
- Medicare patients
- 163vs 21625% below
- Part D claims
- 863vs 96210% below
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Park'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Park and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christine Hyunsun Park treated 163 Medicare patients in 2024, average age 75
CMS counts 163 Medicare patients who saw Dr. Park in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have arthritis, and 75% have high cholesterol. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Park's median patient age at 60, with 67% women.
Dr. Park's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Park's Medicare patients by sex, 2024
- Women12577%
- Men3823%
Chronic conditions among Dr. Park's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure69%
- Mood disorders31%
- Depression30%
- Anxiety28%
- Osteoporosis27%
- Diabetes26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Park's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women67%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christine Hyunsun Park wrote 1,109 Medicare Part D claims in 2024
In 2024, Dr. Park wrote 1,109 Medicare Part D claims for 137 patients. 83% of them were for generic drugs. CMS names the drug for 863 of them, across 19 drugs with 11 or more claims each, at $825,359 in total drug cost. In 2023, CMS named 1,010 claims across 25 drugs.
Dr. Park's Part D claims by kind of drug, 2024
- Generic926 claims83%
- Brand-name and other183 claims17%
Dr. Park'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. Park's Part D claims, 2024
- Opioids4%46 of 1,109 claims
- Antibiotics1%11 of 1,109 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: 1,0102024: 86315%
Drugs named by CMS: 19 in 2024, 25 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. Christine Hyunsun Park offers telehealth to Medicare patients
Dr. Park accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Park as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Christine Hyunsun Park received $14,186 in industry payments from 2016 to 2025
CMS Open Payments shows 550 general payments to Dr. Park from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Janssen Pharmaceuticals, Inc paid the most, $2,744.
General payments to Dr. Park by program year, 2016 to 2025
General payments to Dr. Park by kind, 2016 to 2025
- Food and beverage$13,82097%
- Education$3643%
- Travel and lodging$20%
Companies that paid Dr. Park 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. Christine Hyunsun Park has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Park, most recently Top Doctors:LA Area in 2013.
Awards and honors for Dr. Park
- 2013
- Top Doctors:LA Area
- Top Doctors:San Diego Area
- 2012
- Top Doctors:Southern California
- Undated
- ACR Fellow
Source: Dmand AI Professional Profile Data
Dr. Christine Hyunsun Park graduated from University of Illinois College of Medicine - Chicago
Dr. Park graduated from University of Illinois College of Medicine - Chicago in 1988. Dr. Park is a member of ACR.
- Medical school
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Christine Hyunsun Park accepts plans from 7 insurance carriers
Dr. Park is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Park accepts, by number of carriers
- Medicare7
- PPO6
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Christine Hyunsun Park'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 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Christine Hyunsun Park
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. Christine Hyunsun Park's NPI number?
Dr. Christine Hyunsun Park's NPI number is 1003963364. It was assigned on January 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Christine Hyunsun Park?
Dr. Christine Hyunsun Park is a rheumatologist in Mission Viejo, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Christine Hyunsun Park practice?
Dr. Park practices at 27700 Medical Center Rd, Mission Viejo, CA 92691. Dr. Park's primary practice is Mission Hospital - Unit in Mission Viejo, California.
What is Dr. Christine Hyunsun Park's office phone number?
The practice phone on file for Dr. Park is (949) 365-2447.
What is Dr. Christine Hyunsun Park's medical license number?
Dr. Park holds California license G073810, one of the licenses on file in 2 states.
Which states has Dr. Christine Hyunsun Park been licensed in?
Dmand AI has state licenses on file for Dr. Park in California (1992 to 2026) and Illinois (1988 to 1993).
Which hospitals is Dr. Christine Hyunsun Park affiliated with?
Dr. Park is affiliated with Providence Mission Hospital. Dmand AI links Dr. Park to 1 more hospital.
Does Dr. Christine Hyunsun Park accept Medicare?
Yes. CMS data shows Dr. Park billed Medicare for 387 services in 2024, and Dr. Park accepts Medicare assignment.
Does Dr. Christine Hyunsun Park offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Park as offering telehealth services.
How many Medicare patients does Dr. Christine Hyunsun Park see?
CMS counts 163 Medicare patients who saw Dr. Park in 2024, with an average age of 75.
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Is Dr. Christine Hyunsun Park board certified?
Yes. Dr. Park is board certified in rheumatology by the American Board of Internal Medicine.
What services does Dr. Christine Hyunsun Park bill to Medicare?
In 2024, Dr. Park's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99205).
Where did Dr. Christine Hyunsun Park go to medical school?
Dr. Park graduated from University of Illinois College of Medicine - Chicago in 1988.
What drugs does Dr. Christine Hyunsun Park prescribe most?
In 2024 Medicare Part D data, Dr. Park's most prescribed drugs by claims were Prednisone, Hydroxychloroquine Sulfate and Gabapentin.
Has Dr. Christine Hyunsun Park received payments from drug or device companies?
CMS Open Payments shows $14,186 in general payments to Dr. Park from 37 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Christine Hyunsun Park been practicing?
Dr. Park graduated from medical school in 1988, 38 years ago.
What insurance does Dr. Christine Hyunsun Park accept?
Dr. Park is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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