Dr. Kent Takao Yamaguchi Jr., MD
- Part D claims, 2024
- 49
- Publications
- 11
- Hospital affiliations
- 1
- Industry payments
- $13,287
- Medical group
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Yamaguchi'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. Kent Takao Yamaguchi Jr. is an orthopedic surgeon in Stockton, California
Dr. Yamaguchi practices at Permanente Medical Group Inc in Stockton, California.
Dr. Yamaguchi's NPI, 1649614819, was assigned on April 18, 2013. Dr. Yamaguchi graduated from UCSF School of Medicine in 1972. Dr. Yamaguchi holds California license A133598.
- NPI
- 1649614819NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810249083
- NPI enumeration date
- April 18, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kent Takao Yamaguchi Jr. practices at Permanente Medical Group Inc in Stockton, California
Dr. Yamaguchi's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kent Takao Yamaguchi Jr. is affiliated with 3 sites of care and 1 medical group
Dr. Yamaguchi's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Yamaguchi is also affiliated with Santa Rosa Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Yamaguchi to 1 more group practice or clinic, 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. Kent Takao Yamaguchi Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yamaguchi practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kent Takao Yamaguchi Jr. is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Yamaguchi's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Yamaguchi is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Dr. Yamaguchi's licenses on file in 2 states: California and Washington.
Specialties and state licenses
- Orthopaedic surgery, CaliforniaPrimary
- Washington license
Clinical focus
Dmand AI lists arm, wrist, hand fracture and dislocation among the conditions Dr. Yamaguchi treats.
Orthopedic surgeons near Dr. Yamaguchi
Counts of orthopedic 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. Kent Takao Yamaguchi Jr.'s patients have a median age of 48
Across all payers, Dmand AI patient panel data puts Dr. Yamaguchi's median patient age at 48, with 52% women.
Dr. Yamaguchi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Kent Takao Yamaguchi Jr. wrote 49 Medicare Part D claims in 2024
In 2024, Dr. Yamaguchi wrote 49 Medicare Part D claims for 25 patients. 100% of them were for generic drugs. CMS names the drug for 32 of them, across 2 drugs with 11 or more claims each, at $326 in total drug cost. In 2023, CMS named 51 claims across 3 drugs.
Dr. Yamaguchi'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. Yamaguchi's Part D claims, 2024
- Opioids47%23 of 49 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: 512024: 3237%
Drugs named by CMS: 2 in 2024, 3 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. Kent Takao Yamaguchi Jr. takes part in Medicare
Dr. Yamaguchi 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. Kent Takao Yamaguchi Jr. has 11 publications on record
Dmand AI links 11 papers to Dr. Yamaguchi, published from 2011 to 2025. 2017 was the busiest year, with 2. The most frequent topics are Gas Chromatography-Mass Spectrometry and Phenanthrenes. Dr. Yamaguchi has published most often in J Hand Surg Glob Online. Dr. Yamaguchi's most frequent co-authors are David Lee Skaggs, MD, Behrooz A. Akbarnia, MD and Lindsay Manning Andras, MD.
Dr. Yamaguchi's papers by year, 2011 to 2025
Topics Dr. Yamaguchi writes about most
- Gas Chromatography-Mass Spectrometry
- Phenanthrenes
Dr. Yamaguchi's most frequent co-authors
- David Lee Skaggs, MD2 shared papers
- Behrooz A. Akbarnia, MD1 shared paper
- Lindsay Manning Andras, MD1 shared paper
Recent publications by Dr. Yamaguchi
J Hand Surg Glob Online
See who Dr. Yamaguchi researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Yamaguchi works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kent Takao Yamaguchi Jr. received $13,287 in industry payments from 2016 to 2025
CMS Open Payments shows 23 general payments to Dr. Yamaguchi from 11 drug and device companies from 2016 to 2025. Grants make up the largest share, 75% of the total. Arthrex, Inc. paid the most, $9,990.
General payments to Dr. Yamaguchi by program year, 2016 to 2025
General payments to Dr. Yamaguchi by kind, 2016 to 2025
- Grants$9,99075%
- Food and beverage$2,65120%
- Travel and lodging$5474%
- Gifts$991%
Companies that paid Dr. Yamaguchi 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. Kent Takao Yamaguchi Jr. graduated from UCSF School of Medicine
Dr. Yamaguchi graduated from UCSF School of Medicine in 1972.
- Medical school
- Board certified in orthopaedic surgery
- Board certified in surgery of the hand
Source: Dmand AI Professional Profile Data
Dr. Kent Takao Yamaguchi Jr. accepts plans from 2 insurance carriers
Dr. Yamaguchi is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Yamaguchi accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kent Takao Yamaguchi Jr.'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 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. Kent Takao Yamaguchi Jr.
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. Kent Takao Yamaguchi Jr.'s NPI number?
Dr. Kent Takao Yamaguchi Jr.'s NPI number is 1649614819. It was assigned on April 18, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Kent Takao Yamaguchi Jr.?
Dr. Kent Takao Yamaguchi Jr. is an orthopedic surgeon in Stockton, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Kent Takao Yamaguchi Jr. practice?
Dr. Yamaguchi practices at 7373 West Ln, Stockton, CA 95210. Dr. Yamaguchi's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Yamaguchi to 1 group practice or clinic.
What is Dr. Kent Takao Yamaguchi Jr.'s office phone number?
The practice phone on file for Dr. Yamaguchi is (209) 476-2000.
What is Dr. Kent Takao Yamaguchi Jr.'s medical license number?
Dr. Yamaguchi holds California license A133598, one of the licenses on file in 2 states.
Which states has Dr. Kent Takao Yamaguchi Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Yamaguchi in California (2014 to 2026) and Washington (2019 to 2020).
Which hospitals is Dr. Kent Takao Yamaguchi Jr. affiliated with?
Dr. Yamaguchi is affiliated with Santa Rosa Medical Center.
What medical group is Dr. Kent Takao Yamaguchi Jr. part of?
Dr. Yamaguchi is linked to The Permanente Medical Group, Inc.
Does Dr. Kent Takao Yamaguchi Jr. accept Medicare?
Yes. CMS lists Dr. Yamaguchi as accepting Medicare assignment.
Is Dr. Kent Takao Yamaguchi Jr. board certified?
Yes. Dr. Yamaguchi is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.
Show 7 more questionsShow fewer questions
Where did Dr. Kent Takao Yamaguchi Jr. go to medical school?
Dr. Yamaguchi graduated from UCSF School of Medicine in 1972.
What drugs does Dr. Kent Takao Yamaguchi Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Yamaguchi's most prescribed drugs by claims were Oxycodone HCl and Ibuprofen.
Has Dr. Kent Takao Yamaguchi Jr. received payments from drug or device companies?
CMS Open Payments shows $13,287 in general payments to Dr. Yamaguchi from 11 companies from 2016 to 2025. The largest total came from Arthrex, Inc.
How long has Dr. Kent Takao Yamaguchi Jr. been practicing?
Dr. Yamaguchi graduated from medical school in 1972, 54 years ago.
Does Dr. Kent Takao Yamaguchi Jr. do research?
Dmand AI links 11 publications to Dr. Yamaguchi, published from 2011 to 2025.
Who does Dr. Kent Takao Yamaguchi Jr. publish with?
Dr. Yamaguchi's most frequent co-authors are David Lee Skaggs, MD (2 shared papers), Behrooz A. Akbarnia, MD (1 shared paper) and Lindsay Manning Andras, MD (1 shared paper).
What insurance does Dr. Kent Takao Yamaguchi Jr. accept?
Dr. Yamaguchi is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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