Am J Kidney Dis
Biopsy, NeedleDuodenal NeoplasmsGlomerulonephritis, Membranous
Dr. Rick Yutaka Hayashi, MD
NPI1922027572PAC ID0345327490
- Medicare services, 2024
- 1,604
- Medicare patients, 2024
- 411
- Part D claims, 2024
- 1,785
- Publications
- 1
- MIPS score, 2024
- 88
- Practice address
- 226 N Kuakini Street, Honolulu, HI 96817
- Practice phone
- Call (808) 531-3511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hayashi'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. Rick Yutaka Hayashi is a nephrologist in Honolulu, Hawaii
Dr. Hayashi practices at REHAB Hospital of the Pacific in Honolulu, Hawaii, part of REHAB Hospital of the Pacific.
Dr. Hayashi's NPI, 1922027572, was assigned on July 18, 2006. Dr. Hayashi graduated from University of Hawaii John A. Burns School of Medicine in 2000. Dr. Hayashi holds Hawaii license MD-14540.
NPI and contact details
- NPI
- 1922027572NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345327490
- NPI enumeration date
- July 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (808) 531-3511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rick Yutaka Hayashi practices at REHAB Hospital of the Pacific in Honolulu, Hawaii
Dr. Hayashi's primary practice is REHAB Hospital of the Pacific, at 226 N Kuakini Street, Honolulu, HI 96817 in Honolulu County. The practice phone is (808) 531-3511.
- REHAB Hospital of the Pacific226 N Kuakini Street, Honolulu, HI 96817 · Honolulu CountyPhone(808) 531-3511
Source: Dmand AI Affiliation Data
Dr. Rick Yutaka Hayashi is affiliated with 11 sites of care and 1 medical group
Dr. Hayashi's primary practice is REHAB Hospital of the Pacific in Honolulu, Hawaii, part of REHAB Hospital of the Pacific. Dr. Hayashi is also affiliated with The Queen's Medical Center. The medical group on file is Hawaii Kidney Specialists. Dmand AI also links Dr. Hayashi to 3 more hospitals, 5 dialysis centers and 1 group practice or clinic, each named with a free account.
The Queen's Medical CenterHawaii Kidney Specialists3 hospitalsNames with a free account5 dialysis centersNames with a free account1 group practice or clinicName with a free account
See all 12 affiliations for Dr. HayashiSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Rick Yutaka Hayashi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hayashi practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| REHAB Hospital of the Pacific | Available with a free account |
| +10 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Hayashi practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across REHAB Hospital of the Pacific and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Rick Yutaka Hayashi is one of 63 nephrologists in Hawaii
Nephrology is Dr. Hayashi's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Hayashi is licensed in Hawaii.
Specialties and state licenses
- Nephrology, HawaiiPrimary
Nephrologists near Dr. Hayashi
Counts of nephrologists 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. Rick Yutaka Hayashi billed Medicare for 1,604 services in 2024
CMS data shows 1,604 Medicare services from Dr. Hayashi across 10 procedure codes in 2024, for 411 Medicare patients. Medicare paid $155,524 for them.
Medicare services, 20241,604
Medicare patients411
Paid by Medicare$155,524
Procedure codes10
Dr. Hayashi's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8392024: 1,02122%
- Tests and treatments
- 2023: 4922024: 37923%
- Other services
- 2023: 02024: 204
Where Dr. Hayashi's Medicare services took place, 2024
- In an office93258%
- In a facility67242%
Dr. Hayashi compared with the Hawaii median for nephrologists, 2024
- Dr. Hayashi
- Hawaii median
- Medicare services
- 1,604vs 7162.2 times
- Medicare patients
- 411vs 22186% above
- Part D claims
- 1,491vs 6382.3 times
Medians across 61 nephrologists in Hawaii with Dmand AI profiles that report each measure.
Dr. Hayashi'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. Hayashi and other nephrologists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rick Yutaka Hayashi treated 411 Medicare patients in 2024, average age 74
CMS counts 411 Medicare patients who saw Dr. Hayashi in 2024. The largest group is 75 to 84, with 127 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 12% are also on Medicaid. Their average risk score is 4.82, 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. Hayashi's median patient age at 69, with 45% women.
Medicare patients, 2024411
Average age74
Average risk score4.82
Also on Medicaid12%
Dr. Hayashi's Medicare patients by age, 2024
Dr. Hayashi's Medicare patients by sex, 2024
- Women19247%
- Men21953%
Chronic conditions among Dr. Hayashi's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes67%
- Heart failure42%
- Ischemic heart disease41%
- Atrial fibrillation31%
- Arthritis27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hayashi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rick Yutaka Hayashi wrote 1,785 Medicare Part D claims in 2024
In 2024, Dr. Hayashi wrote 1,785 Medicare Part D claims for 286 patients. 77% of them were for generic drugs. CMS names the drug for 1,491 of them, across 34 drugs with 11 or more claims each, at $527,122 in total drug cost. In 2023, CMS named 1,470 claims across 34 drugs.
Part D claims, 20241,785
Drugs named by CMS34
Total drug cost$527,122
Part D patients286
Dr. Hayashi's Part D claims by kind of drug, 2024
- Generic1,370 claims77%
- Brand-name and other415 claims23%
Dr. Hayashi'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. Hayashi's Part D claims, 2024
- Antibiotics2%34 of 1,785 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: 1,4702024: 1,4911%
Drugs named by CMS: 34 in 2024, 34 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. Rick Yutaka Hayashi scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Hayashi for performance year 2024, reported as part of a group. Dr. Hayashi accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hayashi as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Hayashi's MIPS scores, performance year 2024
- 88of 100Final score
- 60.1of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 83of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Rick Yutaka Hayashi has 1 publication on record
Dmand AI links 1 paper to Dr. Hayashi in 2018. Dr. Hayashi's most frequent co-author is Zao Simon Zhang, MD.
Papers1
Dr. Hayashi's most frequent co-authors
Recent publications by Dr. Hayashi
See who Dr. Hayashi researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hayashi works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Rick Yutaka Hayashi received $5,612 in industry payments from 2016 to 2025
CMS Open Payments shows 236 general payments to Dr. Hayashi from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Relypsa, Inc. paid the most, $808.
General payments to Dr. Hayashi by program year, 2016 to 2025
General payments to Dr. Hayashi by kind, 2016 to 2025
$5.6Kin total
- Food and beverage$5,23893%
- Education$3757%
Companies that paid Dr. Hayashi 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. Rick Yutaka Hayashi graduated from University of Hawaii John A. Burns School of Medicine
Dr. Hayashi graduated from University of Hawaii John A. Burns School of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rick Yutaka Hayashi'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 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)Clinician Public Reporting: Overall MIPS Performance (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. Rick Yutaka Hayashi
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. Rick Yutaka Hayashi's NPI number?
Dr. Rick Yutaka Hayashi's NPI number is 1922027572. It was assigned on July 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Rick Yutaka Hayashi?
Dr. Rick Yutaka Hayashi is a nephrologist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Rick Yutaka Hayashi practice?
Dr. Hayashi practices at 226 N Kuakini Street, Honolulu, HI 96817. Dr. Hayashi's primary practice is REHAB Hospital of the Pacific in Honolulu, Hawaii, part of REHAB Hospital of the Pacific. Dmand AI also links Dr. Hayashi to 3 hospitals, 5 dialysis centers and 1 group practice or clinic.
What is Dr. Rick Yutaka Hayashi's office phone number?
The practice phone on file for Dr. Hayashi is (808) 531-3511.
What is Dr. Rick Yutaka Hayashi's medical license number?
Dr. Hayashi holds Hawaii license MD-14540.
Which hospitals is Dr. Rick Yutaka Hayashi affiliated with?
Dr. Hayashi practices at REHAB Hospital of the Pacific in Honolulu, Hawaii. Dr. Hayashi is also affiliated with The Queen's Medical Center. Dmand AI links Dr. Hayashi to 3 more hospitals.
What medical group is Dr. Rick Yutaka Hayashi part of?
Dr. Hayashi is linked to Hawaii Kidney Specialists.
Does Dr. Rick Yutaka Hayashi accept Medicare?
Yes. CMS data shows Dr. Hayashi billed Medicare for 1,604 services in 2024, and Dr. Hayashi accepts Medicare assignment.
Does Dr. Rick Yutaka Hayashi offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Hayashi as offering telehealth services.
What is Dr. Rick Yutaka Hayashi's MIPS score?
Dr. Hayashi's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Rick Yutaka Hayashi see?
CMS counts 411 Medicare patients who saw Dr. Hayashi in 2024, with an average age of 74.
What services does Dr. Rick Yutaka Hayashi bill to Medicare?
In 2024, Dr. Hayashi's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99215) and medicare service (G2211).
Where did Dr. Rick Yutaka Hayashi go to medical school?
Dr. Hayashi graduated from University of Hawaii John A. Burns School of Medicine in 2000.
What drugs does Dr. Rick Yutaka Hayashi prescribe most?
In 2024 Medicare Part D data, Dr. Hayashi's most prescribed drugs by claims were Allopurinol, Farxiga and Kerendia.
Has Dr. Rick Yutaka Hayashi received payments from drug or device companies?
CMS Open Payments shows $5,612 in general payments to Dr. Hayashi from 31 companies from 2016 to 2025. The largest total came from Relypsa, Inc.
How long has Dr. Rick Yutaka Hayashi been practicing?
Dr. Hayashi graduated from medical school in 2000, 26 years ago.
Does Dr. Rick Yutaka Hayashi do research?
Dmand AI links 1 publication to Dr. Hayashi.
Who does Dr. Rick Yutaka Hayashi publish with?
Dr. Hayashi's most frequent co-authors are Zao Simon Zhang, MD (1 shared paper).
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