Dr. Doh Joon Park, DO
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 397
- Hospital affiliations
- 1
- Industry payments
- $184
- Medical group
- 1
- Practice address
- 9965 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Park's professional email, personal email and mobile number
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Dr. Doh Joon Park is an internist in Fontana, California
Dr. Park practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Park's NPI, 1659996528, was assigned on June 16, 2020. Dr. Park graduated from Touro University California - Vallejo in 2020. Dr. Park holds Iowa license R-11980.
- NPI
- 1659996528NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961824933
- NPI enumeration date
- June 16, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Doh Joon Park practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Park's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Doh Joon Park is affiliated with 2 sites of care and 1 medical group
Dr. Park's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dr. Park is also affiliated with Fontana Medical Center. The medical group on file is Southern California Permanente Medical Group.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Doh Joon 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 |
|---|---|
| Kaiser Permanente - Fontana Medical Center | 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. Doh Joon Park is one of 16,751 internists in California
Internal medicine is Dr. Park's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Park is board certified in internal medicine by the American Board of Internal Medicine. Dr. Park is licensed in Iowa.
Specialties and state licenses
- Internal medicine, IowaPrimary
Clinical focus
Dmand AI lists sepsis among the conditions Dr. Park treats.
Internists near Dr. Park
Counts of internists 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. Doh Joon Park treated 11 Medicare patients in 2024, average age 71
CMS counts 11 Medicare patients who saw Dr. Park in 2024. Their average risk score is 2.34, 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. Park's median patient age at 74, with 54% 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
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Doh Joon Park wrote 397 Medicare Part D claims in 2024
In 2024, Dr. Park wrote 397 Medicare Part D claims for 154 patients. 87% of them were for generic drugs. CMS names the drug for 170 of them, across 9 drugs with 11 or more claims each, at $1,856 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Park's Part D claims by kind of drug, 2024
- Generic345 claims87%
- Brand-name and other52 claims13%
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%16 of 397 claims
- Antibiotics26%103 of 397 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: 122024: 1701317%
Drugs named by CMS: 9 in 2024, 1 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. Doh Joon Park takes part in Medicare
Dr. Park 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. Doh Joon Park received $184 in industry payments from 2021 to 2023
CMS Open Payments shows 11 general payments to Dr. Park from 8 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $47.
General payments to Dr. Park by program year, 2021 to 2023
Companies that paid Dr. Park the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Doh Joon Park graduated from Touro University California - Vallejo
Dr. Park graduated from Touro University California - Vallejo in 2020. Dr. Park is a member of AOA.
- Medical school
- Board certified in internal medicine
- Board certified in 2023 - 2027
- Board certified in 2022 - 2023
Source: Dmand AI Professional Profile Data
Dr. Doh Joon Park accepts plans from 3 insurance carriers
Dr. Park is in network with 3 carriers, including United Healthcare, Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Park accepts, by number of carriers
- HMO2
- Medicare2
- POS2
- EPO1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Doh Joon 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 DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 |
| 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. Doh Joon 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. Doh Joon Park's NPI number?
Dr. Doh Joon Park's NPI number is 1659996528. It was assigned on June 16, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Doh Joon Park?
Dr. Doh Joon Park is an internist in Fontana, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Doh Joon Park practice?
Dr. Park practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Park's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California.
What is Dr. Doh Joon Park's office phone number?
The practice phone on file for Dr. Park is (909) 427-5000.
What is Dr. Doh Joon Park's medical license number?
Dr. Park holds Iowa license R-11980.
Which hospitals is Dr. Doh Joon Park affiliated with?
Dr. Park is affiliated with Fontana Medical Center.
What medical group is Dr. Doh Joon Park part of?
Dr. Park is linked to Southern California Permanente Medical Group.
Does Dr. Doh Joon Park accept Medicare?
Yes. CMS lists Dr. Park as accepting Medicare assignment.
How many Medicare patients does Dr. Doh Joon Park see?
CMS counts 11 Medicare patients who saw Dr. Park in 2024, with an average age of 71.
Is Dr. Doh Joon Park board certified?
Yes. Dr. Park is board certified in internal medicine by the American Board of Internal Medicine.
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Where did Dr. Doh Joon Park go to medical school?
Dr. Park graduated from Touro University California - Vallejo in 2020.
What drugs does Dr. Doh Joon Park prescribe most?
In 2024 Medicare Part D data, Dr. Park's most prescribed drugs by claims were Atorvastatin Calcium, Cefpodoxime Proxetil and Ciprofloxacin HCl.
Has Dr. Doh Joon Park received payments from drug or device companies?
CMS Open Payments shows $184 in general payments to Dr. Park from 8 companies from 2021 to 2023. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Doh Joon Park been practicing?
Dr. Park graduated from medical school in 2020, 6 years ago.
What insurance does Dr. Doh Joon Park accept?
Dr. Park is in network with 3 carriers, including United Healthcare, Kaiser Permanente and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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