Dr. Stephen Yoo, MD
- Part D claims, 2024
- 159
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $10,091
- Medical group
- 1
- Practice address
- 25825 South Vermont Avenue, Harbor City, CA 90710
- Practice phone
- Call (310) 325-5111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Yoo'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. Stephen Yoo is a colorectal surgeon in Harbor City, California
Dr. Yoo practices at Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.
Dr. Yoo's NPI, 1679695340, was assigned on April 4, 2007. Dr. Yoo graduated from Loma Linda University School Of Medicine in 2003. Dr. Yoo holds California license A107821.
- NPI
- 1679695340NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123170784
- NPI enumeration date
- April 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-5111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen Yoo practices at Kaiser Permanente South Bay Medical Center in Harbor City, California
Dr. Yoo's primary practice is Kaiser Permanente South Bay Medical Center, at 25825 South Vermont Avenue, Harbor City, CA 90710 in Los Angeles County. The practice phone is (310) 325-5111.
- Kaiser Permanente South Bay Medical Center25825 South Vermont Avenue, Harbor City, CA 90710 · Los Angeles CountyPhone(310) 325-5111
Source: Dmand AI Affiliation Data
Dr. Stephen Yoo is affiliated with 1 site of care and 1 medical group
Dr. Yoo's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen Yoo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yoo practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South Bay Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen Yoo is one of 187 colorectal surgeons in California
Colon and rectal surgery is Dr. Yoo's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. Yoo is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery. Dmand AI has Dr. Yoo's licenses on file in 2 states: California and Michigan.
Specialties and state licenses
- Colon and rectal surgery, CaliforniaPrimary
- Surgery, Michigan
Clinical focus
Dmand AI lists hemorrhoids among the conditions Dr. Yoo treats.
Colorectal surgeons near Dr. Yoo
Counts of colorectal surgeons 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. Stephen Yoo's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Yoo's median patient age at 58, with 59% women.
Dr. Yoo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women59%
- Men41%
Source: Dmand AI Patient Panel Data
Dr. Stephen Yoo wrote 159 Medicare Part D claims in 2024
In 2024, Dr. Yoo wrote 159 Medicare Part D claims for 75 patients. 99% of them were for generic drugs. CMS names the drug for 110 of them, across 4 drugs with 11 or more claims each, at $2,176 in total drug cost. In 2023, CMS named 162 claims across 4 drugs.
Dr. Yoo's Part D claims by kind of drug, 2024
- Generic158 claims99%
- Brand-name and other1 claims1%
Dr. Yoo'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. Yoo's Part D claims, 2024
- Opioids38%60 of 159 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: 1622024: 11032%
Drugs named by CMS: 4 in 2024, 4 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. Stephen Yoo takes part in Medicare
Dr. Yoo 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. Stephen Yoo has 1 publication on record
Dmand AI links 1 paper to Dr. Yoo in 2018. Dr. Yoo's most frequent co-authors are Ashley Coggins, MD and Kerby Oberg, MD.
Dr. Yoo's most frequent co-authors
Recent publications by Dr. Yoo
See who Dr. Yoo researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Yoo works with, so you can find a warm path to the right colorectal surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephen Yoo received $10,091 in industry payments from 2016 to 2024
CMS Open Payments shows 27 general payments to Dr. Yoo from 1 drug or device company from 2016 to 2024. Speaker and faculty fees make up the largest share, 40% of the total. Intuitive Surgical, Inc. paid the most, $10,091.
General payments to Dr. Yoo by program year, 2016 to 2024
General payments to Dr. Yoo by kind, 2016 to 2024
- Speaker and faculty fees$4,00040%
- Education$3,25032%
- Travel and lodging$2,55825%
- Food and beverage$2833%
Companies that paid Dr. Yoo the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen Yoo graduated from Loma Linda University School Of Medicine
Dr. Yoo graduated from Loma Linda University School Of Medicine in 2003.
- Medical school
- Board certified in colon & rectal surgery
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Stephen Yoo accepts plans from 6 insurance carriers
Dr. Yoo is in network with 6 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Yoo accepts, by number of carriers
- Medicare6
- PPO5
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Stephen Yoo'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Stephen Yoo
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. Stephen Yoo's NPI number?
Dr. Stephen Yoo's NPI number is 1679695340. It was assigned on April 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen Yoo?
Dr. Stephen Yoo is a colorectal surgeon in Harbor City, California. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).
Where does Dr. Stephen Yoo practice?
Dr. Yoo practices at 25825 South Vermont Avenue, Harbor City, CA 90710. Dr. Yoo's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.
What is Dr. Stephen Yoo's office phone number?
The practice phone on file for Dr. Yoo is (310) 325-5111.
What is Dr. Stephen Yoo's medical license number?
Dr. Yoo holds California license A107821, one of the licenses on file in 2 states.
Which states has Dr. Stephen Yoo been licensed in?
Dmand AI has state licenses on file for Dr. Yoo in California (2009 to 2027) and Michigan (2003 to 2012).
Which hospitals is Dr. Stephen Yoo affiliated with?
Dr. Yoo practices at Kaiser Permanente South Bay Medical Center in Harbor City, California.
What medical group is Dr. Stephen Yoo part of?
Dr. Yoo is linked to Southern California Permanente Medical Group.
Does Dr. Stephen Yoo accept Medicare?
Yes. CMS lists Dr. Yoo as accepting Medicare assignment.
Is Dr. Stephen Yoo board certified?
Yes. Dr. Yoo is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery.
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Where did Dr. Stephen Yoo go to medical school?
Dr. Yoo graduated from Loma Linda University School Of Medicine in 2003.
What drugs does Dr. Stephen Yoo prescribe most?
In 2024 Medicare Part D data, Dr. Yoo's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Clotrimazole-Betamethasone and Gavilyte-C.
Has Dr. Stephen Yoo received payments from drug or device companies?
CMS Open Payments shows $10,091 in general payments to Dr. Yoo from 1 company from 2016 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Stephen Yoo been practicing?
Dr. Yoo graduated from medical school in 2003, 23 years ago.
Does Dr. Stephen Yoo do research?
Dmand AI links 1 publication to Dr. Yoo.
Who does Dr. Stephen Yoo publish with?
Dr. Yoo's most frequent co-authors are Ashley Coggins, MD (1 shared paper) and Kerby Oberg, MD (1 shared paper).
What insurance does Dr. Stephen Yoo accept?
Dr. Yoo is in network with 6 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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