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Dr. Charles Minoru Okamura, MD
NPI1427254192PAC ID8426147067
- Medicare services, 2024
- 11
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 657
- Publications
- 3
- Hospital affiliations
- 1
- Practice address
- 1011 Waianuenue Ave, Hilo, HI 96720
- Practice phone
- Call (801) 325-0153
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Yukio Okutsu State Veteran's Home
Hilo, Hawaii
Find Dr. Okamura's professional email, personal email and mobile number
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Dr. Charles Minoru Okamura is an internist in Hilo, Hawaii
Dr. Okamura practices at Yukio Okutsu State Veteran's Home in Hilo, Hawaii.
Dr. Okamura's NPI, 1427254192, was assigned on June 21, 2007. Dr. Okamura graduated from New York Medical College in 2007. Dr. Okamura holds Hawaii license 21499.
NPI and contact details
- NPI
- 1427254192NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426147067
- NPI enumeration date
- June 21, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (801) 325-0153
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles Minoru Okamura practices at Yukio Okutsu State Veteran's Home in Hilo, Hawaii
Dr. Okamura's primary practice is Yukio Okutsu State Veteran's Home, at 1011 Waianuenue Ave, Hilo, HI 96720 in Hawaii County. The practice phone is (801) 325-0153.
- Yukio Okutsu State Veteran's Home1011 Waianuenue Ave, Hilo, HI 96720 · Hawaii CountyPhone(801) 325-0153
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charles Minoru Okamura is affiliated with 7 sites of care and 2 medical groups
Dr. Okamura's primary practice is Yukio Okutsu State Veteran's Home in Hilo, Hawaii. Dr. Okamura is also affiliated with Hilo Benioff Medical Center. The medical group on file is Quantum Healthcare Medical Associates Inc. Dmand AI also links Dr. Okamura to 2 more skilled nursing facilities, 1 physician office, 1 group practice or clinic, 1 hospice and 1 medical group, each named with a free account.
Yukio Okutsu State Veteran's HomePrimary
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. Charles Minoru Okamura's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Okamura practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Yukio Okutsu State Veteran's Home | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles Minoru Okamura is one of 771 internists in Hawaii
Internal medicine is Dr. Okamura's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Okamura is licensed in Hawaii.
Specialties and state licenses
- Internal medicine, HawaiiPrimary
Internists near Dr. Okamura
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. Charles Minoru Okamura billed Medicare for 11 services in 2024
CMS data shows 11 Medicare services from Dr. Okamura across 1 procedure code in 2024, for 14 Medicare patients. Medicare paid $664 for them. Every service was in an office.
Medicare services, 202411
Medicare patients14
Paid by Medicare$664
Procedure codes1
Dr. Okamura's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 1132024: 1190%
Dr. Okamura compared with the Hawaii median for internists, 2024
- Dr. Okamura
- Hawaii median
- Medicare services
- 11vs 34297% below
- Medicare patients
- 14vs 12889% below
- Part D claims
- 448vs 67033% below
Medians across 699 internists in Hawaii with Dmand AI profiles that report each measure.
Dr. Okamura'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. Okamura and other internists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles Minoru Okamura treated 14 Medicare patients in 2024, average age 74
CMS counts 14 Medicare patients who saw Dr. Okamura in 2024. The largest group is under 65, with 0 patients. 75% of them have high blood pressure. Their average risk score is 0.74, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Okamura's median patient age at 76, with 44% women.
Medicare patients, 202414
Average age74
Average risk score0.74
Dr. Okamura's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Okamura's Medicare patients, 2024
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Okamura's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles Minoru Okamura wrote 657 Medicare Part D claims in 2024
In 2024, Dr. Okamura wrote 657 Medicare Part D claims for 41 patients. 85% of them were for generic drugs. CMS names the drug for 448 of them, across 23 drugs with 11 or more claims each, at $11,089 in total drug cost. In 2023, CMS named 280 claims across 14 drugs.
Part D claims, 2024657
Drugs named by CMS23
Total drug cost$11,089
Part D patients41
Dr. Okamura's Part D claims by kind of drug, 2024
- Generic560 claims85%
- Brand-name97 claims15%
Dr. Okamura'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. Okamura's Part D claims, 2024
- Opioids4%23 of 657 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: 2802024: 44860%
Drugs named by CMS: 23 in 2024, 14 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. Charles Minoru Okamura takes part in Medicare
Dr. Okamura 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. Charles Minoru Okamura has 3 publications on record
Dmand AI links 3 papers to Dr. Okamura, published from 2014 to 2019. Dr. Okamura's most frequent co-authors are David L. Abramson, MD, Nicole M. Adler, MD and Eddie Louie, MD.
Papers3
Years published2014 to 2019
Dr. Okamura's papers by year, 2014 to 2019
Dr. Okamura's most frequent co-authors
Recent publications by Dr. Okamura
See who Dr. Okamura researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Okamura works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Charles Minoru Okamura received $524 in industry payments from 2016 to 2025
CMS Open Payments shows 20 general payments to Dr. Okamura from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $201.
General payments to Dr. Okamura by program year, 2016 to 2025
Companies that paid Dr. Okamura 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. Charles Minoru Okamura graduated from New York Medical College
Dr. Okamura graduated from New York Medical College in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles Minoru Okamura'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 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) |
| 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 |
| 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. Charles Minoru Okamura
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. Charles Minoru Okamura's NPI number?
Dr. Charles Minoru Okamura's NPI number is 1427254192. It was assigned on June 21, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles Minoru Okamura?
Dr. Charles Minoru Okamura is an internist in Hilo, Hawaii. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Charles Minoru Okamura practice?
Dr. Okamura practices at 1011 Waianuenue Ave, Hilo, HI 96720. Dr. Okamura's primary practice is Yukio Okutsu State Veteran's Home in Hilo, Hawaii. Dmand AI also links Dr. Okamura to 2 skilled nursing facilities, 1 physician office, 1 group practice or clinic, 1 hospice and 1 medical group.
What is Dr. Charles Minoru Okamura's office phone number?
The practice phone on file for Dr. Okamura is (801) 325-0153.
What is Dr. Charles Minoru Okamura's medical license number?
Dr. Okamura holds Hawaii license 21499.
Which hospitals is Dr. Charles Minoru Okamura affiliated with?
Dr. Okamura is affiliated with Hilo Benioff Medical Center.
What medical group is Dr. Charles Minoru Okamura part of?
Dr. Okamura is linked to Quantum Healthcare Medical Associates Inc. Dmand AI links Dr. Okamura to 1 more medical group.
Does Dr. Charles Minoru Okamura accept Medicare?
Yes. CMS data shows Dr. Okamura billed Medicare for 11 services in 2024, and Dr. Okamura accepts Medicare assignment.
How many Medicare patients does Dr. Charles Minoru Okamura see?
CMS counts 14 Medicare patients who saw Dr. Okamura in 2024, with an average age of 74.
What services does Dr. Charles Minoru Okamura bill to Medicare?
In 2024, Dr. Okamura's most billed Medicare services were care management and other visits (99497).
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Where did Dr. Charles Minoru Okamura go to medical school?
Dr. Okamura graduated from New York Medical College in 2007.
What drugs does Dr. Charles Minoru Okamura prescribe most?
In 2024 Medicare Part D data, Dr. Okamura's most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Losartan Potassium.
Has Dr. Charles Minoru Okamura received payments from drug or device companies?
CMS Open Payments shows $524 in general payments to Dr. Okamura from 5 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Charles Minoru Okamura been practicing?
Dr. Okamura graduated from medical school in 2007, 19 years ago.
Does Dr. Charles Minoru Okamura do research?
Dmand AI links 3 publications to Dr. Okamura, published from 2014 to 2019.
Who does Dr. Charles Minoru Okamura publish with?
Dr. Okamura's most frequent co-authors are David L. Abramson, MD (1 shared paper), Nicole M. Adler, MD (1 shared paper) and Eddie Louie, MD (1 shared paper).
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