Randall F. Sakamoto, OD, PhD
- Medicare patients, 2024
- 35
- Part D claims, 2024
- 199
- Industry payments
- $461
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1441 Kapiolani Blvd, Honolulu, HI 96814
- Practice phone
- Call (808) 550-4939
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jon F Graham MD LLC
Honolulu, Hawaii
Find Randall Sakamoto'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.
Randall F. Sakamoto is an optometrist in Honolulu, Hawaii
Randall Sakamoto practices at Jon F Graham MD LLC in Honolulu, Hawaii.
Randall Sakamoto's NPI, 1336171131, was assigned on July 6, 2006. Randall Sakamoto graduated from Illinois College of Optometry at Chicago in 1981. Randall Sakamoto holds Hawaii license OD-186.
- NPI
- 1336171131NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072566413
- NPI enumeration date
- July 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 550-4939
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Randall F. Sakamoto practices at Jon F Graham MD LLC in Honolulu, Hawaii
Randall Sakamoto's primary practice is Jon F Graham MD LLC, at 1441 Kapiolani Blvd, Honolulu, HI 96814 in Honolulu County. The practice phone is (808) 550-4939.
- Jon F Graham MD LLC1441 Kapiolani Blvd, Honolulu, HI 96814 · Honolulu CountyPhone(808) 550-4939
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Randall F. Sakamoto is affiliated with 2 sites of care and 1 medical group
Randall Sakamoto's primary practice is Jon F Graham MD LLC in Honolulu, Hawaii. Dmand AI also links Randall Sakamoto to 1 group practice or clinic and 1 medical group, each 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 Randall F. Sakamoto's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Randall Sakamoto practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jon F Graham MD LLC | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Randall F. Sakamoto is one of 256 optometrists in Hawaii
Optometrist is Randall Sakamoto's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Randall Sakamoto is licensed in Hawaii.
Specialties and state licenses
- Optometrist, HawaiiPrimary
Optometrists near Randall Sakamoto
Counts of optometrists 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
Randall F. Sakamoto treated 35 Medicare patients in 2024, average age 77
CMS counts 35 Medicare patients who saw Randall Sakamoto in 2024. The largest group is 75 to 84, with 14 patients. 75% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Randall Sakamoto's median patient age at 73, with 60% women.
Randall Sakamoto's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Randall Sakamoto's Medicare patients by sex, 2024
- Women2160%
- Men1440%
Chronic conditions among Randall Sakamoto's Medicare patients, 2024
- High cholesterol75%
- High blood pressure63%
Share of Medicare patients with each condition. A patient can have several.
Randall Sakamoto'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
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Randall F. Sakamoto wrote 199 Medicare Part D claims in 2024
In 2024, Randall Sakamoto wrote 199 Medicare Part D claims for 64 patients. 51% of them were for generic drugs.
Randall Sakamoto's Part D claims by kind of drug, 2024
- Generic102 claims51%
- Brand-name97 claims49%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Randall F. Sakamoto takes part in Medicare
Randall Sakamoto 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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Randall F. Sakamoto received $461 in industry payments in 2025
CMS Open Payments shows 5 general payments to Randall Sakamoto from 4 drug and device companies in 2025. Food and beverage make up the largest share, 84% of the total. Glaukos Corporation paid the most, $174.
General payments to Randall Sakamoto by kind, 2025 to 2025
- Food and beverage$38684%
- Entertainment$7416%
Companies that paid Randall Sakamoto the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Randall F. Sakamoto graduated from Illinois College of Optometry at Chicago
Randall Sakamoto graduated from Illinois College of Optometry at Chicago in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Randall F. Sakamoto'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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) |
| 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 Randall F. Sakamoto
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Randall F. Sakamoto's NPI number?
Randall F. Sakamoto's NPI number is 1336171131. It was assigned on July 6, 2006, and it is active in the NPI Registry.
What does Randall F. Sakamoto specialize in?
Randall F. Sakamoto is an optometrist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Randall F. Sakamoto practice?
Randall Sakamoto practices at 1441 Kapiolani Blvd, Honolulu, HI 96814. Randall Sakamoto's primary practice is Jon F Graham MD LLC in Honolulu, Hawaii. Dmand AI also links Randall Sakamoto to 1 group practice or clinic and 1 medical group.
What is Randall F. Sakamoto's office phone number?
The practice phone on file for Randall Sakamoto is (808) 550-4939.
What is Randall F. Sakamoto's medical license number?
Randall Sakamoto holds Hawaii license OD-186.
Does Randall F. Sakamoto accept Medicare?
Yes. CMS lists Randall Sakamoto as accepting Medicare assignment.
How many Medicare patients does Randall F. Sakamoto see?
CMS counts 35 Medicare patients who saw Randall Sakamoto in 2024, with an average age of 77.
Where did Randall F. Sakamoto go to medical school?
Randall Sakamoto graduated from Illinois College of Optometry at Chicago in 1981.
Has Randall F. Sakamoto received payments from drug or device companies?
CMS Open Payments shows $461 in general payments to Randall Sakamoto from 4 companies from 2025 to 2025. The largest total came from Glaukos Corporation.
How long has Randall F. Sakamoto been practicing?
Randall Sakamoto graduated from medical school in 1981, 45 years ago.
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