Dr. Dong Jun John Park, MD
- Medicare services, 2021
- 131
- Part D claims, 2024
- 139
- Industry payments
- $880
- State licenses
- 2
- Year NPI issued
- 2006
- Practice address
- 3833 Worsham Ave, Long Beach, CA 90808
- Practice phone
- Call (562) 595-5421
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Long Beach Gastroenterology Associates
Long Beach, California
Find Dr. Park's professional email, personal email and mobile number
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Dr. Dong Jun John Park is an ophthalmologist in Long Beach, California
Dr. Park practices at Long Beach Gastroenterology Associates in Long Beach, California.
Dr. Park's NPI, 1700865052, was assigned on January 14, 2006. Dr. Park graduated from Rush Medical College in 2025. Dr. Park holds California license A98835.
- NPI
- 1700865052NPI Registry (opens in a new tab)
- NPI enumeration date
- January 14, 2006
- NPI status
- Active
- Practice phone
- (562) 595-5421
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2025
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Dong Jun John Park practices at Long Beach Gastroenterology Associates in Long Beach, California
Dr. Park's primary practice is Long Beach Gastroenterology Associates, at 3833 Worsham Ave, Long Beach, CA 90808 in Los Angeles County. The practice phone is (562) 595-5421.
- Long Beach Gastroenterology Associates3833 Worsham Ave, Long Beach, CA 90808 · Los Angeles CountyPhone(562) 595-5421
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dong Jun John Park is affiliated with 1 site of care
Dr. Park's primary practice is Long Beach Gastroenterology Associates in Long Beach, California.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Dong Jun John Park's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Park practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Long Beach Gastroenterology Associates | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dong Jun John Park is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Park's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Park is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Park's licenses on file in 2 states: California and Minnesota.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Minnesota license
Ophthalmologists near Dr. Park
Counts of ophthalmologists 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. Dong Jun John Park billed Medicare for 131 services in 2021
CMS data shows 131 Medicare services from Dr. Park across 3 procedure codes in 2021. Medicare paid $10,272 for them. Every service was in an office.
Dr. Park's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 862021: 11129%
- Tests and treatments
- 2020: 152021: 2033%
Dr. Park compared with the California median for ophthalmologists, 2021
- Dr. Park
- California median
- Medicare services
- 131vs 1,07988% below
- Part D claims
- 116vs 61881% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Park's most billed Medicare procedure codes, 2021
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 ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dong Jun John Park's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Park's median patient age at 74, with 72% women.
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 74
Patient panel by sex, all payers
- Women72%
- Men28%
Source: Dmand AI Patient Panel Data
Dr. Dong Jun John Park wrote 139 Medicare Part D claims in 2024
In 2024, Dr. Park wrote 139 Medicare Part D claims for 41 patients. 80% of them were for generic drugs. CMS names the drug for 116 of them, across 6 drugs with 11 or more claims each, at $757 in total drug cost. In 2023, CMS named 173 claims across 6 drugs.
Dr. Park's Part D claims by kind of drug, 2024
- Generic111 claims80%
- Brand-name28 claims20%
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
- Opioids16%22 of 139 claims
- Antibiotics28%39 of 139 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: 1732024: 11633%
Drugs named by CMS: 6 in 2024, 6 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. Dong Jun John Park received $880 in industry payments from 2017 to 2024
CMS Open Payments shows 21 general payments to Dr. Park from 8 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Merz North America, Inc. paid the most, $227.
General payments to Dr. Park by program year, 2017 to 2024
Companies that paid Dr. Park the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dong Jun John Park graduated from Rush Medical College
Dr. Park graduated from Rush Medical College in 2025.
- Medical school
- Board certified in ophthalmology
- Board certified in plastic surgery
Source: Dmand AI Professional Profile Data
Sources for Dr. Dong Jun John 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 | 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 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 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. Dong Jun John 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. Dong Jun John Park's NPI number?
Dr. Dong Jun John Park's NPI number is 1700865052. It was assigned on January 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dong Jun John Park?
Dr. Dong Jun John Park is an ophthalmologist in Long Beach, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Dong Jun John Park practice?
Dr. Park practices at 3833 Worsham Ave, Long Beach, CA 90808. Dr. Park's primary practice is Long Beach Gastroenterology Associates in Long Beach, California.
What is Dr. Dong Jun John Park's office phone number?
The practice phone on file for Dr. Park is (562) 595-5421.
What is Dr. Dong Jun John Park's medical license number?
Dr. Park holds California license A98835, one of the licenses on file in 2 states.
Which states has Dr. Dong Jun John Park been licensed in?
Dmand AI has state licenses on file for Dr. Park in California (2007 to 2027) and Minnesota (2005 to 2008).
Does Dr. Dong Jun John Park accept Medicare?
Yes. CMS data shows Dr. Park billed Medicare for 131 services in 2021.
Is Dr. Dong Jun John Park board certified?
Yes. Dr. Park is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Dong Jun John Park bill to Medicare?
In 2021, Dr. Park's most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and eye exam or test (92082).
Where did Dr. Dong Jun John Park go to medical school?
Dr. Park graduated from Rush Medical College in 2025.
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What drugs does Dr. Dong Jun John Park prescribe most?
In 2024 Medicare Part D data, Dr. Park's most prescribed drugs by claims were Cephalexin, Neomycin-Polymyxin-Dexameth and Hydrocodone-Acetaminophen.
Has Dr. Dong Jun John Park received payments from drug or device companies?
CMS Open Payments shows $880 in general payments to Dr. Park from 8 companies from 2017 to 2024. The largest total came from Merz North America, Inc.
How long has Dr. Dong Jun John Park been practicing?
Dr. Park graduated from medical school in 2025, 1 years ago.
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