Dr. David Yaw Amoah Dadey , MD, PhD
Neurological Surgery β’ Honolulu, HI
550 S Beretania St Ste 510
Honolulu, HI 968132496
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. David Dadey is listed in NPPES under Neurological Surgery.
-
NPI assigned on April 5, 2017; this date does not establish years in practice.
-
Published CMS data list 13 Medicare Part D prescriptions, including refills, in 2019.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2019. Published rows only; this is not a quality measure.
-
Published Part D records, 2019:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) β 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2019. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
Practice Location & Contact Primary Location
550 S Beretania St Ste 510
Honolulu, HI 968132496
CMS Doctors and Clinicians lists 1 group name: Queens University Medical Group. 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
2017
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
13 standardized 30-day fills in 2019
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
$91 in 2019
The total cost of these prescriptions in 2019, 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 β by Provider and Drug, 2019.
Open Payments general payments, program year 2025
All general payments: $10,632.43 across 108 records.
By nature of payment
- Travel and Lodging: $7,069.68 across 27 records.
- Food and Beverage: $3,562.75 across 81 records.
Reporting-company totals (3 largest of 5)
- Globus Medical, Inc.: $10,122.00 across 96 records.
- icotec Medical Inc.: $167.19 across 1 record.
- Stryker Corporation: $147.89 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
9 years (graduated 2017)
CMS Doctors and Clinicians data list 2017 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
2017
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, βDoes your provider accept Medicare as full payment?β
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Dadey 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. Dadey 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 Honolulu and Hawaii
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Dadey are from 2019.
13 active clinicians are listed under Neurological Surgery with a practice address in Honolulu, HI (19 in Hawaii).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Honolulu
53.8% of these 13 clinicians have the CMS telehealth indicator.
76.9% of these 13 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2019 only.
-
30-day fills
CMS data for 30-day fills are available for 2019 only.
-
Part D drug cost
CMS data for Part D drug cost are available for 2019 only.
-
Industry payments (Open Payments)
Industry payments (Open Payments) increased 466% from $1,877.17 in 2022 to $10,632.43 in 2025.
- 2022: $1,877.17
- 2023: $799.70
- 2024: $1,834.76
- 2025: $10,632.43
Sources: CMS Medicare Part D Prescribers (2019), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· 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 β December 31, 2025): 108 records totaling $10,632.43.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $2,023.77 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $1,793.64 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
TLIF | General | $1,060.70 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $368.50 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $368.50 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $198.00 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $198.00 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $184.00 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $170.43 |
| icotec Medical Inc. |
Food and Beverage
In-kind items and services
|
VADER PEDICLE SYSTEM 6.0, SCREW, Carbon/PEEK, POLYAX., FEN., O 5.5 X 45 MM | General | $167.19 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $159.50 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $156.50 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
MARS | General | $152.72 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $151.50 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
SURPASS EVOLVE | General | $147.89 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
ATTRAX | General | $143.42 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $140.81 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $130.92 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $127.65 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $124.41 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
ATTRAX | General | $114.31 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $113.81 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $112.84 |
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
EXCELSIUS GPS | General | $99.38 |
| Globus Medical, Inc. |
Travel and Lodging
Cash or cash equivalent
|
EXCELSIUS GPS | General | $99.00 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2019.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 13 | 52 | $90.70 | 13 |
Source: CMS Part D by Provider and Drug, 2019; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-01-07NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEUROSURGERY
I20240913001601
HI
2567902778
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
Queens University Medical Group
550 S Beretania St, Honolulu, HI 968132496
Queens University Medical Group
1301 Punchbowl St, Honolulu, HI 968132499
Queens University Medical Group
1380 Lusitana St, Honolulu, HI 968132448
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Neurological Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 550 S BERETANIA ST STE 510, HONOLULU, HI 968132496 (Tel: 8086912727)
Registered at 550 S BERETANIA ST STE 510, HONOLULU, HI 968132496 (Tel: 8086912727)
Recorded as DAVID DADEY, MD, PHD
Neurological Surgery (license number reported to NPPES: CA A156914)
NPI status registered as active in NPPES database
Registered at 875 BLAKE WILBUR DR, PALO ALTO, CA 943042205 (Tel: 6507250701)
Registered at 875 BLAKE WILBUR DR, PALO ALTO, CA 943042205 (Tel: 6507250701)
Recorded as DAVID DADEY, PH.D.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Neurological Surgery Specialists in Honolulu
- Dr. Yi Zhang, MD
- Dr. Eric Oshiro, MD
- Dr. Ramesh Kumar, MD
- Reid Hoshide
- Dr. Michon Morita, MD
- Dr. Matthew Chang, MD
Mailing Address
550 S Beretania St Ste 510
Honolulu, HI 968132496
Phone: 8086912727