Dr. Naoko Onizuka, MD, MPH, PhD
- Medicare services, 2024
- 83
- Medicare patients, 2024
- 121
- Part D claims, 2024
- 58
- Publications
- 19
- Hospital affiliations
- 1
- Practice address
- 3800 Park Nicollet Blvd, Saint Louis Park, MN 55416
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Park Nicollet Child and Family Behavioral Health Center - HOPD
Acute Care Hospital outpatient department · Saint Louis Park, Minnesota
Find Dr. Onizuka'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. Naoko Onizuka is an orthopedic surgeon in Minneapolis, Minnesota
Dr. Onizuka practices at Park Nicollet Child and Family Behavioral Health Center - HOPD in Saint Louis Park, Minnesota.
Dr. Onizuka's NPI, 1336672930, was assigned on April 10, 2017. Dr. Onizuka holds Minnesota license 67089.
- NPI
- 1336672930NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921363888
- NPI enumeration date
- April 10, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Naoko Onizuka practices at Park Nicollet Child and Family Behavioral Health Center - HOPD in Saint Louis Park, Minnesota
Dr. Onizuka's primary practice is Park Nicollet Child and Family Behavioral Health Center - HOPD, at 3800 Park Nicollet Blvd, Saint Louis Park, MN 55416.
- Park Nicollet Child and Family Behavioral Health Center - HOPD3800 Park Nicollet Blvd, Saint Louis Park, MN 55416
Source: Dmand AI Affiliation Data
Dr. Naoko Onizuka is affiliated with 5 sites of care and 2 medical groups
Dr. Onizuka's primary practice is Park Nicollet Child and Family Behavioral Health Center - HOPD in Saint Louis Park, Minnesota. Dr. Onizuka is also affiliated with Methodist Hospital. The medical group on file is Park Nicollet Clinic. Dmand AI also links Dr. Onizuka to 2 more group practices and clinics, 1 clinical lab and 1 medical group, each named with a free account. Dr. Onizuka's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Naoko Onizuka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onizuka practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Park Nicollet Child and Family Behavioral Health Center - HOPD | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Naoko Onizuka is one of 533 orthopedic surgeons in Minnesota
Orthopaedic surgery is Dr. Onizuka's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Onizuka is licensed in Minnesota.
Specialties and state licenses
- Orthopaedic surgery, MinnesotaPrimary
Orthopedic surgeons near Dr. Onizuka
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. Naoko Onizuka billed Medicare for 83 services in 2024
CMS data shows 83 Medicare services from Dr. Onizuka across 5 procedure codes in 2024, for 121 Medicare patients. Medicare paid $40,164 for them.
Dr. Onizuka's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 262024: 4262%
- Surgery
- 2023: 332024: 4124%
Where Dr. Onizuka's Medicare services took place, 2024
- In an office2834%
- In a facility5566%
Dr. Onizuka compared with the Minnesota median for orthopedic surgeons, 2024
- Dr. Onizuka
- Minnesota median
- Medicare services
- 83vs 34676% below
- Medicare patients
- 121vs 16527% below
- Part D claims
- 26vs 6862% below
Medians across 514 orthopedic surgeons in Minnesota with Dmand AI profiles that report each measure.
Dr. Onizuka's most billed Medicare procedure codes, 2024
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. Onizuka and other orthopedic surgeons in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Naoko Onizuka treated 121 Medicare patients in 2024, average age 80
CMS counts 121 Medicare patients who saw Dr. Onizuka in 2024. The largest group is 85 and over, with 56 patients. 72% of them have high blood pressure, and 68% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.78, 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. Onizuka's median patient age at 73, with 68% women.
Dr. Onizuka's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Onizuka's Medicare patients by sex, 2024
- Women7562%
- Men4638%
Chronic conditions among Dr. Onizuka's Medicare patients, 2024
- High blood pressure72%
- High cholesterol68%
- Osteoporosis66%
- Arthritis60%
- Mood disorders50%
- Depression44%
- Anxiety38%
- Chronic kidney disease36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Onizuka's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women68%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Naoko Onizuka wrote 58 Medicare Part D claims in 2024
In 2024, Dr. Onizuka wrote 58 Medicare Part D claims for 46 patients. 98% of them were for generic drugs. CMS names the drug for 26 of them, across 1 drug with 11 or more claims each, at $106 in total drug cost. In 2023, CMS named 63 claims across 3 drugs.
Dr. Onizuka's Part D claims by kind of drug, 2024
- Generic57 claims98%
- Brand-name and other1 claims2%
Dr. Onizuka'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. Onizuka's Part D claims, 2024
- Opioids64%37 of 58 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: 632024: 2659%
Drugs named by CMS: 1 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
Dr. Naoko Onizuka ranks in the 62nd percentile for removal of tissue in Medicare
Dr. Onizuka accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of removal of tissue by Dr. Onizuka, more than 62% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Onizuka ranks in Medicare procedure volume
- Removal of tissue
- 62nd percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Naoko Onizuka has 19 publications on record
Dmand AI links 19 papers to Dr. Onizuka, published from 2014 to 2024. 2024 was the busiest year, with 5. The most frequent topics are Gene Expression Regulation, Hip Fractures and Homeodomain Proteins. Dr. Onizuka has published most often in Geriatr Orthop Surg Rehabil. Dr. Onizuka's most frequent co-authors are Julie A. Switzer, Arthur Only, MD and Kristine E. Ensrud, MD.
Dr. Onizuka's papers by year, 2014 to 2024
Topics Dr. Onizuka writes about most
- Gene Expression Regulation
- Hip Fractures
- Homeodomain Proteins
- Knee Joint
- Osteoarthritis, Knee
- Radiography
- Transcription Factors
Dr. Onizuka's most frequent co-authors
- Julie A. Switzer8 shared papers
- Arthur Only, MD3 shared papers
- Kristine E. Ensrud, MD1 shared paper
Recent publications by Dr. Onizuka
Geriatr Orthop Surg Rehabil
Lancet Healthy Longev
See who Dr. Onizuka researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Onizuka 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. Naoko Onizuka received $1,724 in industry payments from 2021 to 2023
CMS Open Payments shows 9 general payments to Dr. Onizuka from 5 drug and device companies from 2021 to 2023. Travel and lodging make up the largest share, 68% of the total. Si-bone, Inc. paid the most, $1,337.
General payments to Dr. Onizuka by program year, 2021 to 2023
General payments to Dr. Onizuka by kind, 2021 to 2023
- Travel and lodging$1,17768%
- Food and beverage$54632%
Companies that paid Dr. Onizuka the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Naoko Onizuka'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 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 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)Doctors and Clinicians Utilization Data (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) |
| 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. Naoko Onizuka
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. Naoko Onizuka's NPI number?
Dr. Naoko Onizuka's NPI number is 1336672930. It was assigned on April 10, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Naoko Onizuka?
Dr. Naoko Onizuka is an orthopedic surgeon in Minneapolis, Minnesota. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Naoko Onizuka practice?
Dr. Onizuka practices at 3800 Park Nicollet Blvd, Saint Louis Park, MN 55416. Dr. Onizuka's primary practice is Park Nicollet Child and Family Behavioral Health Center - HOPD in Saint Louis Park, Minnesota. Dmand AI also links Dr. Onizuka to 2 group practices and clinics, 1 clinical lab and 1 medical group.
What is Dr. Naoko Onizuka's medical license number?
Dr. Onizuka holds Minnesota license 67089.
Which hospitals is Dr. Naoko Onizuka affiliated with?
Dr. Onizuka is affiliated with Methodist Hospital.
What medical group is Dr. Naoko Onizuka part of?
Dr. Onizuka is linked to Park Nicollet Clinic. Dmand AI links Dr. Onizuka to 1 more medical group.
Does Dr. Naoko Onizuka accept Medicare?
Yes. CMS data shows Dr. Onizuka billed Medicare for 83 services in 2024, and Dr. Onizuka accepts Medicare assignment.
How many Medicare patients does Dr. Naoko Onizuka see?
CMS counts 121 Medicare patients who saw Dr. Onizuka in 2024, with an average age of 80.
What services does Dr. Naoko Onizuka bill to Medicare?
In 2024, Dr. Onizuka's most billed Medicare services were surgery: bones and joints (27236), surgery: bones and joints (27245) and office visit, established patient (99214).
What drugs does Dr. Naoko Onizuka prescribe most?
In 2024 Medicare Part D data, Dr. Onizuka's most prescribed drugs by claims were Oxycodone HCl.
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Has Dr. Naoko Onizuka received payments from drug or device companies?
CMS Open Payments shows $1,724 in general payments to Dr. Onizuka from 5 companies from 2021 to 2023. The largest total came from Si-bone, Inc.
How long has Dr. Naoko Onizuka been practicing?
Dr. Onizuka graduated from medical school in 2004, 22 years ago.
Does Dr. Naoko Onizuka do research?
Dmand AI links 19 publications to Dr. Onizuka, published from 2014 to 2024.
Who does Dr. Naoko Onizuka publish with?
Dr. Onizuka's most frequent co-authors are Julie A. Switzer (8 shared papers), Arthur Only, MD (3 shared papers) and Kristine E. Ensrud, MD (1 shared paper).
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