Dr. Richard S. Stack, MD
- Medicare services, 2024
- 67
- Medicare patients, 2026
- 51
- Part D claims, 2026
- 1,193
- Hospital affiliations
- 2
- Industry payments
- $1,759
- Practice address
- 1190 Waianuenue Avenue, Hilo, HI 96720
- Practice phone
- Call (808) 932-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Stack'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. Richard S. Stack is a urologist in Hilo, Hawaii
Dr. Stack practices at Hilo Benioff Medical Center in Hilo, Hawaii, part of State of Hawaiʻi.
Dr. Stack's NPI, 1376519017, was assigned on February 23, 2006. Dr. Stack holds New Jersey license MA50961.
- NPI
- 1376519017NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052531258
- NPI enumeration date
- February 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 932-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Richard S. Stack practices at Hilo Benioff Medical Center in Hilo, Hawaii
Dr. Stack's primary practice is Hilo Benioff Medical Center, at 1190 Waianuenue Avenue, Hilo, HI 96720 in Hawaii County. The practice phone is (808) 932-3000.
- Hilo Benioff Medical Center1190 Waianuenue Avenue, Hilo, HI 96720 · Hawaii CountyPhone(808) 932-3000
Source: Dmand AI Affiliation Data
Dr. Richard S. Stack is affiliated with 2 sites of care and 2 medical groups
Dr. Stack's primary practice is Hilo Benioff Medical Center in Hilo, Hawaii, part of State of Hawaiʻi. Dr. Stack is also affiliated with Ka'u Hospital. The medical group on file is Hilo Benioff Medical Center. Dmand AI also links Dr. Stack to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Richard S. Stack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stack practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hilo Benioff Medical Center | Available with a free account |
| +1 more site and 1 medical group | 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 State of Hawaiʻi and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Richard S. Stack is one of 55 urologists in Hawaii
Urology is Dr. Stack's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Stack is licensed in New Jersey.
Specialties and state licenses
- Urology, New JerseyPrimary
Urologists near Dr. Stack
Counts of urologists 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. Richard S. Stack billed Medicare for 67 services in 2024
CMS data shows 67 Medicare services from Dr. Stack across 4 procedure codes in 2024, for 51 Medicare patients. Medicare paid $8,025 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Stack's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 132024: 30131%
- Imaging
- 2023: 222024: 22No change
- Office and hospital visits
- 2023: 222024: 1532%
Dr. Stack compared with the Hawaii median for urologists, 2024
- Dr. Stack
- Hawaii median
- Medicare services
- 67vs 54888% below
- Medicare patients
- 51vs 30483% below
- Part D claims
- 1,059vs 89418% above
Medians across 51 urologists in Hawaii with Dmand AI profiles that report each measure.
Dr. Stack'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. Stack?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Stack and other urologists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Richard S. Stack treated 51 Medicare patients in 2026, average age 74
CMS counts 51 Medicare patients who saw Dr. Stack in 2026. The largest group is 65 to 74, with 23 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.58, 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. Stack's median patient age at 73, with 23% women.
Dr. Stack's Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Stack's Medicare patients, 2026
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease41%
- Diabetes37%
- Cancer33%
- Ischemic heart disease31%
- Arthritis24%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Stack'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
- Women23%
- Men77%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. Richard S. Stack wrote 1,193 Medicare Part D claims in 2026
In 2026, Dr. Stack wrote 1,193 Medicare Part D claims for 291 patients. 93% of them were for generic drugs. CMS names the drug for 1,059 of them, across 17 drugs with 11 or more claims each, at $80,519 in total drug cost. In 2023, CMS named 927 claims across 17 drugs.
Dr. Stack's Part D claims by kind of drug, 2026
- Generic1,114 claims93%
- Brand-name and other79 claims7%
Dr. Stack'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. Stack's Part D claims, 2026
- Opioids1%14 of 1,193 claims
- Antibiotics11%129 of 1,193 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: 9272024: 1,05914%
Drugs named by CMS: 17 in 2024, 17 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), 2026 data
Dr. Richard S. Stack ranks in the 60th percentile for prostate resection in Medicare
Dr. Stack accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of prostate resection by Dr. Stack, more than 60% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Stack ranks in Medicare procedure volume
- Prostate resection
- 60th 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. Richard S. Stack received $1,759 in industry payments from 2016 to 2025
CMS Open Payments shows 35 general payments to Dr. Stack from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 62% of the total. Boston Scientific Corporation paid the most, $978.
General payments to Dr. Stack by program year, 2016 to 2025
General payments to Dr. Stack by kind, 2016 to 2025
- Food and beverage$1,08962%
- Travel and lodging$66438%
- Education$50%
Companies that paid Dr. Stack the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Richard S. Stack'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) |
| 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. Richard S. Stack
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. Richard S. Stack's NPI number?
Dr. Richard S. Stack's NPI number is 1376519017. It was assigned on February 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Richard S. Stack?
Dr. Richard S. Stack is a urologist in Hilo, Hawaii. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Richard S. Stack practice?
Dr. Stack practices at 1190 Waianuenue Avenue, Hilo, HI 96720. Dr. Stack's primary practice is Hilo Benioff Medical Center in Hilo, Hawaii, part of State of Hawaiʻi. Dmand AI also links Dr. Stack to 1 medical group, and a free account names each one.
What is Dr. Richard S. Stack's office phone number?
The practice phone on file for Dr. Stack is (808) 932-3000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Richard S. Stack's email address?
Dmand AI checks professional and personal email addresses for Dr. Stack through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Richard S. Stack's medical license number?
Dr. Stack holds New Jersey license MA50961.
Which hospitals is Dr. Richard S. Stack affiliated with?
Dr. Stack practices at Hilo Benioff Medical Center in Hilo, Hawaii. Dr. Stack is also affiliated with Ka'u Hospital.
What medical group is Dr. Richard S. Stack part of?
Dr. Stack is linked to Hilo Benioff Medical Center. Dmand AI links Dr. Stack to 1 more medical group, named with a free account.
Who does Dr. Richard S. Stack practice with?
Dmand AI links 117 HCPs to Dr. Stack's primary medical group, 5 of them urologists. A free account lists them, with verified contacts.
Does Dr. Richard S. Stack accept Medicare?
Yes. CMS data shows Dr. Stack billed Medicare for 67 services in 2024, and Dr. Stack accepts Medicare assignment.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Richard S. Stack see?
CMS counts 51 Medicare patients who saw Dr. Stack in 2026, with an average age of 74.
What services does Dr. Richard S. Stack bill to Medicare?
In 2024, Dr. Stack's most billed Medicare services were diagnostic imaging (74420), surgery: urinary system (52332) and hospital inpatient care (99222).
What drugs does Dr. Richard S. Stack prescribe most?
In 2024 Medicare Part D data, Dr. Stack's most prescribed drugs by claims were Tamsulosin HCl, Finasteride and Solifenacin Succinate.
Has Dr. Richard S. Stack received payments from drug or device companies?
CMS Open Payments shows $1,759 in general payments to Dr. Stack from 13 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Richard S. Stack been practicing?
Dr. Stack graduated from medical school in 1986, 40 years ago.
What EHR does Dr. Richard S. Stack's practice use?
Dmand AI tracks the EHR system at Hilo Benioff Medical Center and at 1 more site and 1 medical group. The vendor and product are available with a free Dmand AI account.
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