Dr. Karen Eunkyung Oh, DO
- Medicare services, 2020
- 20
- Part D claims, 2024
- 1,773
- Industry payments
- $166
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 23000 Crenshaw Blvd, Torrance, CA 90505
- Practice phone
- Call (310) 437-7399
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pacific West Surgery Center, LLC
Torrance, California
Find Dr. Oh's professional email, personal email and mobile number
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Dr. Karen Eunkyung Oh is an internist in Torrance, California
Dr. Oh practices at Pacific West Surgery Center, LLC in Torrance, California.
Dr. Oh's NPI, 1902006588, was assigned on July 20, 2007. Dr. Oh graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1988. Dr. Oh holds California license 20A5905.
- NPI
- 1902006588NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294886131
- NPI enumeration date
- July 20, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 437-7399
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen Eunkyung Oh practices at Pacific West Surgery Center, LLC in Torrance, California
Dr. Oh's primary practice is Pacific West Surgery Center, LLC, at 23000 Crenshaw Blvd, Torrance, CA 90505 in Los Angeles County. The practice phone is (310) 437-7399.
- Pacific West Surgery Center, LLC23000 Crenshaw Blvd, Torrance, CA 90505 · Los Angeles CountyPhone(310) 437-7399
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karen Eunkyung Oh is affiliated with 2 sites of care
Dr. Oh's primary practice is Pacific West Surgery Center, LLC in Torrance, California. Dmand AI also links Dr. Oh to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Karen Eunkyung Oh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oh practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pacific West Surgery Center, LLC | 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. Karen Eunkyung Oh is one of 16,751 internists in California
Internal medicine is Dr. Oh's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Oh is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Oh
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. Karen Eunkyung Oh billed Medicare for 20 services in 2020
CMS data shows 20 Medicare services from Dr. Oh across 1 procedure code in 2020, all of them office visits. Medicare paid $1,389 for them. Every service was in an office.
Dr. Oh compared with the California median for internists, 2020
- Dr. Oh
- California median
- Medicare services
- 20vs 36194% below
- Part D claims
- 1,255vs 4213.0 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Oh's most billed Medicare procedure codes, 2020
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. Karen Eunkyung Oh's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Oh's median patient age at 59, with 67% women.
Dr. Oh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women67%
- Men31%
Source: Dmand AI Patient Panel Data
Dr. Karen Eunkyung Oh wrote 1,773 Medicare Part D claims in 2024
In 2024, Dr. Oh wrote 1,773 Medicare Part D claims for 115 patients. 92% of them were for generic drugs. CMS names the drug for 1,255 of them, across 30 drugs with 11 or more claims each, at $49,995 in total drug cost. In 2023, CMS named 1,394 claims across 42 drugs.
Dr. Oh's Part D claims by kind of drug, 2024
- Generic1,629 claims92%
- Brand-name and other144 claims8%
Dr. Oh'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. Oh's Part D claims, 2024
- Opioids2%32 of 1,773 claims
- Antibiotics2%40 of 1,773 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: 1,3942024: 1,25510%
Drugs named by CMS: 30 in 2024, 42 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. Karen Eunkyung Oh offers telehealth to Medicare patients
Dr. Oh accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Oh as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Karen Eunkyung Oh received $166 in industry payments from 2016 to 2019
CMS Open Payments shows 5 general payments to Dr. Oh from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Scilex Pharmaceuticals Inc. paid the most, $65.
General payments to Dr. Oh by program year, 2016 to 2019
Companies that paid Dr. Oh the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen Eunkyung Oh graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Oh graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen Eunkyung Oh'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Karen Eunkyung Oh
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. Karen Eunkyung Oh's NPI number?
Dr. Karen Eunkyung Oh's NPI number is 1902006588. It was assigned on July 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Eunkyung Oh?
Dr. Karen Eunkyung Oh is an internist in Torrance, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Karen Eunkyung Oh practice?
Dr. Oh practices at 23000 Crenshaw Blvd, Torrance, CA 90505. Dr. Oh's primary practice is Pacific West Surgery Center, LLC in Torrance, California. Dmand AI also links Dr. Oh to 1 physician office.
What is Dr. Karen Eunkyung Oh's office phone number?
The practice phone on file for Dr. Oh is (310) 437-7399.
What is Dr. Karen Eunkyung Oh's medical license number?
Dr. Oh holds California license 20A5905.
Does Dr. Karen Eunkyung Oh accept Medicare?
Yes. CMS data shows Dr. Oh billed Medicare for 20 services in 2020, and Dr. Oh accepts Medicare assignment.
Does Dr. Karen Eunkyung Oh offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Oh as offering telehealth services.
What services does Dr. Karen Eunkyung Oh bill to Medicare?
In 2020, Dr. Oh's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Karen Eunkyung Oh go to medical school?
Dr. Oh graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1988.
What drugs does Dr. Karen Eunkyung Oh prescribe most?
In 2024 Medicare Part D data, Dr. Oh's most prescribed drugs by claims were Amlodipine Besylate, Rosuvastatin Calcium and Losartan Potassium.
Has Dr. Karen Eunkyung Oh received payments from drug or device companies?
CMS Open Payments shows $166 in general payments to Dr. Oh from 5 companies from 2016 to 2019. The largest total came from Scilex Pharmaceuticals Inc.
How long has Dr. Karen Eunkyung Oh been practicing?
Dr. Oh graduated from medical school in 1988, 38 years ago.
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