Dr. Richard S. Stack , MD
Urology โข Tripler Amc, HI
1 Jarrett White Rd, Tripler Army Medical Center, Attn: Mchk-Qs
Tripler Amc, HI 968595001
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on February 23, 2006; this date does not establish years in practice.
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Published CMS data list 67 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 74420 โ Imaging of urinary tract following injection of a contrast agent: 22 service units.
- 52332 โ Insertion of stent in ureter using an endoscope: 18 service units.
- 99222 โ Initial hospital care with straightforward or low-level medical decision making: 15 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 1,059 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Tamsulosin Hcl โ 368 prescription fills, including refills.
- Finasteride โ 248 prescription fills, including refills.
- Solifenacin Succinate โ 58 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 17 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 85% of clinicians listed under Urology in Hawaii (2024, 26 clinicians with data). Median for this group: 1,091. Middle half: 454 to 1,690.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 141 in 2020 to 67 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1 Jarrett White Rd
Tripler Army Medical Center, Attn: Mchk-Qs
Tripler Amc, HI 968595001
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Hilo Benioff Medical Center; Kau Hospital. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1986
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
51 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $10,059 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $8,025 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
2,707 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$80,519 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $329.72 across 9 records.
By nature of payment
- Food and Beverage: $329.72 across 9 records.
Reporting-company totals
- Boston Scientific Corporation: $176.77 across 2 records.
- UROGEN PHARMA, INC.: $135.70 across 6 records.
- Telix Pharmaceuticals: $17.25 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
40 years (graduated 1986)
CMS Doctors and Clinicians data list 1986 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Stack has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Stack as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Tripler Amc and Hawaii
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 85% of clinicians listed under Urology in Hawaii (2024, 26 clinicians with data). Median for this group: 1,091. Middle half: 454 to 1,690.
Too few clinicians listed under Urology in Tripler Amc have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Urology in Hawaii (2024, 26 clinicians with data). Median for this group: $86,729. Middle half: $40,676 to $126,944.
Too few clinicians listed under Urology in Tripler Amc have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Urology in Hawaii (2024, 26 clinicians with data). Median for this group: $61,540. Middle half: $28,638 to $87,964.
Too few clinicians listed under Urology in Tripler Amc have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Urology in Hawaii (2024, 33 clinicians with data). Median for this group: 1,187. Middle half: 757 to 1,931.
Too few clinicians listed under Urology in Tripler Amc have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Urology in Hawaii (2024, 33 clinicians with data). Median for this group: $203,003. Middle half: $49,088 to $412,395.
Too few clinicians listed under Urology in Tripler Amc have Medicare Part D data for 2024 to compare.
4 active clinicians are listed under Urology with a practice address in Tripler Amc, HI (57 in Hawaii).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 52% from 141 in 2020 to 67 in 2024.
- 2020: 141
- 2021: 77
- 2022: 70
- 2023: 57
- 2024: 67
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $10,683 in 2020 and $10,059 in 2024.
- 2020: $10,683
- 2021: $14,192
- 2022: $10,714
- 2023: $5,470
- 2024: $10,059
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Paid by Medicare
Paid by Medicare varied from year to year: $8,354 in 2020 and $8,025 in 2024.
- 2020: $8,354
- 2021: $11,178
- 2022: $7,749
- 2023: $4,367
- 2024: $8,025
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 606% from 150 in 2020 to 1,059 in 2024.
- 2020: 150
- 2021: 588
- 2022: 711
- 2023: 927
- 2024: 1,059
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30-day fills
30-day fills increased 755% from 317 in 2020 to 2,707 in 2024.
- 2020: 317
- 2021: 1,323
- 2022: 1,722
- 2023: 2,365
- 2024: 2,707
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Part D drug cost
Part D drug cost increased 3254% from $2,401 in 2020 to $80,519 in 2024.
- 2020: $2,401
- 2021: $57,006
- 2022: $72,740
- 2023: $84,361
- 2024: $80,519
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $201.67 in 2019 to $329.72 in 2025.
- 2019: $201.67
- 2020: $12.96
- 2022: $73.45
- 2025: $329.72
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $329.72.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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AMS 800 Artificial Urinary Sphincter | General | $95.63 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
General - Erectile Dysfunction | General | $81.14 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
|
โ | General | $37.05 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
|
โ | General | $29.43 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
|
ZUSDURI | General | $24.98 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
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JELMYTO | General | $20.71 |
| Telix Pharmaceuticals |
Food and Beverage
In-kind items and services
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ILLUCCIX | General | $17.25 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
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โ | General | $12.61 |
| UROGEN PHARMA, INC. |
Food and Beverage
In-kind items and services
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ZUSDURI | General | $10.92 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2018โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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74420
Imaging of urinary tract following injection of a contrast agent
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22 | 18 | $149.55 | $24.25 |
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52332
Insertion of stent in ureter using an endoscope
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18 | 14 | $761.67 | $141.79 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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15 | 13 | $228.13 | $129.18 |
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52356
Crushing of stone of ureter with insertion of stent using an endoscope
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12 | 11 | $706.83 | $419.60 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Tamsulosin Hcl | Tamsulosin Hcl | 368 | 32,062 | $10,519.22 | 138 |
| Finasteride | Finasteride | 248 | 21,588 | $5,306.61 | 88 |
| Solifenacin Succinate | Solifenacin Succinate | 58 | 5,028 | $9,429.90 | 31 |
| Potassium Citrate Er | Potassium Citrate | 54 | 4,315 | $7,188.74 | 16 |
| Myrbetriq | Mirabegron | 48 | 2,480 | $35,814.27 | 14 |
| Trospium Chloride | Trospium Chloride | 47 | 3,910 | $5,356.01 | 19 |
| Oxybutynin Chloride | Oxybutynin Chloride | 40 | 1,103 | $429.59 | 31 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 29 | 423 | $173.96 | 22 |
| Dutasteride | Dutasteride | 29 | 2,610 | $1,847.57 | 14 |
| Cefdinir | Cefdinir | 26 | 393 | $540.03 | 23 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 23 | 1,071 | $622.72 | 14 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 20 | 221 | $148.02 | 19 |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 16 | 1,450 | $1,118.60 | โ |
| Testosterone Cypionate | Testosterone Cypionate | 15 | 560 | $267.97 | โ |
| Silodosin | Silodosin | 14 | 1,020 | $1,704.86 | โ |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 13 | 33 | $36.25 | 13 |
| Diazepam | Diazepam | 11 | 11 | $14.45 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-05-01NUCC Taxonomy Code: 208800000X
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
NUCC Taxonomy Code: 208800000X
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - UROLOGY
I20141010001737
HI
1052531258
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Hilo Benioff Medical Center
1190 Waianuenue Ave, Hilo, HI 967202089
Phone: 8089323000
Kau Hospital
1285 Waianuenue Ave, Hilo, HI 967201209
Phone: 8084323000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Pathology - Anatomic Pathology & Clinical Pathology
Doctor of Medicine (M.D.)
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Surgery
Doctor of Medicine (M.D.)
Physician Assistant - Surgical
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Urology (license number reported to NPPES: HI MD-14129)
NPI status registered as active in NPPES database
Registered at 1 JARRETT WHITE RD, TRIPLER ARMY MEDICAL CENTER, ATTN: MCHK-QS, TRIPLER AMC, HI 968595001 (Tel: 8084332460)
Registered at 1 JARRETT WHITE RD, TRIPLER ARMY MEDICAL CENTER, ATTN: MCHK-QS, TRIPLER AMC, HI 968595001 (Tel: 8084332460)
Recorded as RICHARD STACK, M.D.
Urology (license number reported to NPPES: NJ MA50961)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
1 Jarrett White Rd, Tripler Army Medical Center, Attn: Mchk-Qs
Tripler Amc, HI 968595001
Phone: 8084332460