Dr. Shayne Mark Castanera, MD
- Medicare services, 2024
- 408
- Medicare patients, 2024
- 113
- Part D claims, 2024
- 277
- Hospital affiliations
- 1
- Industry payments
- $842
- Practice address
- 98-1079 Moanalua Road, Aiea, HI 96701
- Practice phone
- Call (808) 486-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Castanera's professional email, personal email and mobile number
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Dr. Shayne Mark Castanera is an internist in Aiea, Hawaii
Dr. Castanera practices at Pali Momi Medical Center in Aiea, Hawaii, part of Hawaiʻi Pacific Health.
Dr. Castanera's NPI, 1053337469, was assigned on July 15, 2006. Dr. Castanera graduated from University of Hawaii John A. Burns School of Medicine in 1988. Dr. Castanera holds Hawaii license MD6965.
- NPI
- 1053337469NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456318427
- NPI enumeration date
- July 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 486-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Shayne Mark Castanera practices at Pali Momi Medical Center in Aiea, Hawaii
Dr. Castanera's primary practice is Pali Momi Medical Center, at 98-1079 Moanalua Road, Aiea, HI 96701 in Honolulu County. The practice phone is (808) 486-6000.
- Pali Momi Medical Center98-1079 Moanalua Road, Aiea, HI 96701 · Honolulu CountyPhone(808) 486-6000
Source: Dmand AI Affiliation Data
Dr. Shayne Mark Castanera is affiliated with 3 sites of care
Dr. Castanera's primary practice is Pali Momi Medical Center in Aiea, Hawaii, part of Hawaiʻi Pacific Health. Dmand AI also links Dr. Castanera to 1 clinical lab and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Shayne Mark Castanera's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castanera practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pali Momi Medical Center | Available with a free account |
| +2 more affiliated sites | 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 Hawaiʻi Pacific Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Shayne Mark Castanera is one of 771 internists in Hawaii
Internal medicine is Dr. Castanera's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Castanera is board certified in internal medicine by the American Board of Internal Medicine. Dr. Castanera is licensed in Hawaii.
Specialties and state licenses
- Internal medicine, HawaiiPrimary
Internists near Dr. Castanera
Counts of internists 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. Shayne Mark Castanera billed Medicare for 408 services in 2024
CMS data shows 408 Medicare services from Dr. Castanera across 4 procedure codes in 2024, for 113 Medicare patients. Medicare paid $37,272 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Castanera's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7422024: 40845%
Dr. Castanera compared with the Hawaii median for internists, 2024
- Dr. Castanera
- Hawaii median
- Medicare services
- 408vs 34219% above
- Medicare patients
- 113vs 12812% below
- Part D claims
- 126vs 67081% below
Medians across 699 internists in Hawaii with Dmand AI profiles that report each measure.
Dr. Castanera'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. Castanera?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Castanera and other internists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Shayne Mark Castanera treated 113 Medicare patients in 2024, average age 81
CMS counts 113 Medicare patients who saw Dr. Castanera in 2024. The largest group is 85 and over, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.80, 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. Castanera's median patient age at 75, with 51% women.
Dr. Castanera's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Castanera's Medicare patients by sex, 2024
- Women6255%
- Men5145%
Chronic conditions among Dr. Castanera's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease59%
- Arthritis50%
- Diabetes46%
- Ischemic heart disease46%
- Heart failure41%
- Osteoporosis32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Castanera's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Shayne Mark Castanera wrote 277 Medicare Part D claims in 2024
In 2024, Dr. Castanera wrote 277 Medicare Part D claims for 107 patients. 83% of them were for generic drugs. CMS names the drug for 126 of them, across 9 drugs with 11 or more claims each, at $11,352 in total drug cost. In 2023, CMS named 163 claims across 9 drugs.
Dr. Castanera's Part D claims by kind of drug, 2024
- Generic231 claims83%
- Brand-name46 claims17%
Dr. Castanera'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. Castanera's Part D claims, 2024
- Antibiotics18%50 of 277 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: 1632024: 12623%
Drugs named by CMS: 9 in 2024, 9 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
How Dr. Shayne Mark Castanera takes part in Medicare
Dr. Castanera accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Shayne Mark Castanera received $842 in industry payments from 2016 to 2024
CMS Open Payments shows 37 general payments to Dr. Castanera from 7 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $535.
General payments to Dr. Castanera by program year, 2016 to 2024
Companies that paid Dr. Castanera the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Shayne Mark Castanera graduated from University of Hawaii John A. Burns School of Medicine
Dr. Castanera graduated from University of Hawaii John A. Burns School of Medicine in 1988.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Shayne Mark Castanera'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) |
| 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. Shayne Mark Castanera
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. Shayne Mark Castanera's NPI number?
Dr. Shayne Mark Castanera's NPI number is 1053337469. It was assigned on July 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Shayne Mark Castanera?
Dr. Shayne Mark Castanera is an internist in Aiea, Hawaii. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Shayne Mark Castanera practice?
Dr. Castanera practices at 98-1079 Moanalua Road, Aiea, HI 96701. Dr. Castanera's primary practice is Pali Momi Medical Center in Aiea, Hawaii, part of Hawaiʻi Pacific Health. Dmand AI also links Dr. Castanera to 1 clinical lab and 1 physician office.
What is Dr. Shayne Mark Castanera's office phone number?
The practice phone on file for Dr. Castanera is (808) 486-6000.
What is Dr. Shayne Mark Castanera's medical license number?
Dr. Castanera holds Hawaii license MD6965.
Which hospitals is Dr. Shayne Mark Castanera affiliated with?
Dr. Castanera practices at Pali Momi Medical Center in Aiea, Hawaii.
Does Dr. Shayne Mark Castanera accept Medicare?
Yes. CMS data shows Dr. Castanera billed Medicare for 408 services in 2024, and Dr. Castanera accepts Medicare assignment.
How many Medicare patients does Dr. Shayne Mark Castanera see?
CMS counts 113 Medicare patients who saw Dr. Castanera in 2024, with an average age of 81.
Is Dr. Shayne Mark Castanera board certified?
Yes. Dr. Castanera is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Shayne Mark Castanera bill to Medicare?
In 2024, Dr. Castanera's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Show 4 more questionsShow fewer questions
Where did Dr. Shayne Mark Castanera go to medical school?
Dr. Castanera graduated from University of Hawaii John A. Burns School of Medicine in 1988.
What drugs does Dr. Shayne Mark Castanera prescribe most?
In 2024 Medicare Part D data, Dr. Castanera's most prescribed drugs by claims were Metoprolol Succinate, Furosemide and Jardiance.
Has Dr. Shayne Mark Castanera received payments from drug or device companies?
CMS Open Payments shows $842 in general payments to Dr. Castanera from 7 companies from 2016 to 2024. The largest total came from Allergan Inc.
How long has Dr. Shayne Mark Castanera been practicing?
Dr. Castanera graduated from medical school in 1988, 38 years ago.
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