Dr. Ron D. Ah Loy, MD
- Medicare services, 2024
- 252
- Medicare patients, 2024
- 209
- Part D claims, 2024
- 212
- Hospital affiliations
- 1
- Industry payments
- $3,368
- Practice address
- 67 1125 Mamalahoa Highway, Kamuela, HI 96743
- Practice phone
- Call (808) 885-4444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ah Loy's professional email, personal email and mobile number
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Dr. Ron D. Ah Loy is a gastroenterologist in Kamuela, Hawaii
Dr. Ah Loy practices at Queen's North Hawaiʻi Community Hospital in Kamuela, Hawaii, part of The Queen's Health Systems.
Dr. Ah Loy's NPI, 1598795403, was assigned on July 4, 2006. Dr. Ah Loy graduated from University of Hawaii John A. Burns School of Medicine in 1978. Dr. Ah Loy holds Hawaii license MD4748.
- NPI
- 1598795403NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901796630
- NPI enumeration date
- July 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (808) 885-4444
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ron D. Ah Loy practices at Queen's North Hawaiʻi Community Hospital in Kamuela, Hawaii
Dr. Ah Loy's primary practice is Queen's North Hawaiʻi Community Hospital, at 67 1125 Mamalahoa Highway, Kamuela, HI 96743 in Hawaii County. The practice phone is (808) 885-4444.
- Queen's North Hawaiʻi Community Hospital67 1125 Mamalahoa Highway, Kamuela, HI 96743 · Hawaii CountyPhone(808) 885-4444
Source: Dmand AI Affiliation Data
Dr. Ron D. Ah Loy is affiliated with 2 sites of care
Dr. Ah Loy's primary practice is Queen's North Hawaiʻi Community Hospital in Kamuela, Hawaii, part of The Queen's Health Systems. Dmand AI also links Dr. Ah Loy to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ron D. Ah Loy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ah Loy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Queen's North Hawaiʻi Community Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across The Queen's Health Systems and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ron D. Ah Loy is one of 76 gastroenterologists in Hawaii
Gastroenterology is Dr. Ah Loy's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Ah Loy is licensed in Hawaii.
Specialties and state licenses
- Gastroenterology, HawaiiPrimary
Gastroenterologists near Dr. Ah Loy
Counts of gastroenterologists 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. Ron D. Ah Loy billed Medicare for 252 services in 2024
CMS data shows 252 Medicare services from Dr. Ah Loy across 10 procedure codes in 2024, for 209 Medicare patients. Medicare paid $34,930 for them.
Dr. Ah Loy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1492024: 12417%
- Office and hospital visits
- 2023: 722024: 7910%
- Other services
- 2023: 322024: 4953%
Where Dr. Ah Loy's Medicare services took place, 2024
- In an office5622%
- In a facility19678%
Dr. Ah Loy compared with the Hawaii median for gastroenterologists, 2024
- Dr. Ah Loy
- Hawaii median
- Medicare services
- 252vs 30116% below
- Medicare patients
- 209vs 17023% above
- Part D claims
- 156vs 30048% below
Medians across 72 gastroenterologists in Hawaii with Dmand AI profiles that report each measure.
Dr. Ah Loy'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.
Need commercial claims for Dr. Ah Loy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ah Loy and other gastroenterologists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ron D. Ah Loy treated 209 Medicare patients in 2024, average age 73
CMS counts 209 Medicare patients who saw Dr. Ah Loy in 2024. The largest group is 65 to 74, with 140 patients. 75% of them have high cholesterol, and 56% have high blood pressure. Their average risk score is 0.77, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ah Loy's median patient age at 65, with 46% women.
Dr. Ah Loy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ah Loy's Medicare patients by sex, 2024
- Women12158%
- Men8842%
Chronic conditions among Dr. Ah Loy's Medicare patients, 2024
- High cholesterol75%
- High blood pressure56%
- Arthritis34%
- Diabetes22%
- Ischemic heart disease19%
- Anxiety14%
- Cancer14%
- Mood disorders13%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ah Loy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ron D. Ah Loy wrote 212 Medicare Part D claims in 2024
In 2024, Dr. Ah Loy wrote 212 Medicare Part D claims for 140 patients. 77% of them were for generic drugs. CMS names the drug for 156 of them, across 6 drugs with 11 or more claims each, at $29,274 in total drug cost. In 2023, CMS named 144 claims across 7 drugs.
Dr. Ah Loy's Part D claims by kind of drug, 2024
- Generic164 claims77%
- Brand-name48 claims23%
Dr. Ah Loy'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1442024: 1568%
Drugs named by CMS: 6 in 2024, 7 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. Ron D. Ah Loy ranks in the 90th percentile for colonoscopy in Medicare
Dr. Ah Loy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ah Loy as offering telehealth. CMS counts 161 procedures of colonoscopy by Dr. Ah Loy, more than 90% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Ah Loy ranks in Medicare procedure volume
- Colonoscopy
- 90th percentile161 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 76th percentile97 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. Ron D. Ah Loy received $3,368 in industry payments from 2016 to 2025
CMS Open Payments shows 100 general payments to Dr. Ah Loy from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,110.
General payments to Dr. Ah Loy by program year, 2016 to 2025
General payments to Dr. Ah Loy by kind, 2016 to 2025
- Food and beverage$3,05891%
- Gifts$1635%
- Education$1484%
Companies that paid Dr. Ah Loy 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. Ron D. Ah Loy graduated from University of Hawaii John A. Burns School of Medicine
Dr. Ah Loy graduated from University of Hawaii John A. Burns School of Medicine in 1978.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ron D. Ah Loy'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)Doctors and Clinicians Utilization Data (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 Dr. Ron D. Ah Loy
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. Ron D. Ah Loy's NPI number?
Dr. Ron D. Ah Loy's NPI number is 1598795403. It was assigned on July 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ron D. Ah Loy?
Dr. Ron D. Ah Loy is a gastroenterologist in Kamuela, Hawaii. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Ron D. Ah Loy practice?
Dr. Ah Loy practices at 67 1125 Mamalahoa Highway, Kamuela, HI 96743. Dr. Ah Loy's primary practice is Queen's North Hawaiʻi Community Hospital in Kamuela, Hawaii, part of The Queen's Health Systems. Dmand AI also links Dr. Ah Loy to 1 physician office.
What is Dr. Ron D. Ah Loy's office phone number?
The practice phone on file for Dr. Ah Loy is (808) 885-4444.
What is Dr. Ron D. Ah Loy's medical license number?
Dr. Ah Loy holds Hawaii license MD4748.
Which hospitals is Dr. Ron D. Ah Loy affiliated with?
Dr. Ah Loy practices at Queen's North Hawaiʻi Community Hospital in Kamuela, Hawaii.
Does Dr. Ron D. Ah Loy accept Medicare?
Yes. CMS data shows Dr. Ah Loy billed Medicare for 252 services in 2024, and Dr. Ah Loy accepts Medicare assignment.
Does Dr. Ron D. Ah Loy offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ah Loy as offering telehealth services.
How many Medicare patients does Dr. Ron D. Ah Loy see?
CMS counts 209 Medicare patients who saw Dr. Ah Loy in 2024, with an average age of 73.
What services does Dr. Ron D. Ah Loy bill to Medicare?
In 2024, Dr. Ah Loy's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (43239) and medicare service (G0105).
Show 4 more questionsShow fewer questions
Where did Dr. Ron D. Ah Loy go to medical school?
Dr. Ah Loy graduated from University of Hawaii John A. Burns School of Medicine in 1978.
What drugs does Dr. Ron D. Ah Loy prescribe most?
In 2024 Medicare Part D data, Dr. Ah Loy's most prescribed drugs by claims were Gavilyte-G, Gavilyte-C and Peg-3350 And Electrolytes.
Has Dr. Ron D. Ah Loy received payments from drug or device companies?
CMS Open Payments shows $3,368 in general payments to Dr. Ah Loy from 17 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Ron D. Ah Loy been practicing?
Dr. Ah Loy graduated from medical school in 1978, 48 years ago.
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