Ronald Frederick Schaefer, MD
Critical Care Medicine (Internal Medicine) Physician · Honolulu, HI
Ronald Frederick Schaefer, MD is a critical care medicine (internal medicine) physician with a practice address in Honolulu, Hawaii, and NPI 1679641278, issued on Dec 1, 2006. Check the license (Hawaii 5871, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ronald Frederick Schaefer
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 5871 HI
Self-reported in NPPES; status is on the state search - Practice location
- 888 S King St, Honolulu, HI 96813
- Phone
- (808) 722-6314
- Enumerated
- Dec 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 36 in Hawaii → Look up another NPI →
Also registered at 888 S King St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ronald Frederick Schaefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license 5871Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $272.56
10 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ronald Frederick Schaefer among 36 critical care medicine (internal medicine) physician records in Hawaii
Ronald Frederick Schaefer, MD is one of 36 critical care medicine (internal medicine) physician records with a practice address in Hawaii. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Hawaii
There are 36 critical care medicine (internal medicine) physician records in Hawaii.
All 36 in Hawaii → Every provider in Honolulu → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Russell Gilbert, M.D.Honolulu, HI 968131417918798
- Sonia HowmanHonolulu, HI 968131457414724
- Sailaja Kolli, M.D.Honolulu, HI 968131205925369
- Marc Kruger, M.D.Honolulu, HI 968131275572026
- Artur Krupa, M.D.Honolulu, HI 968131093788440
- Gary Kuniyoshi, MDHonolulu, HI 968131558388223
- Jordan Lee, M.D.Honolulu, HI 968131174847842
- Poh Leng, M.D.Honolulu, HI 968131477520120
Common questions
What is Ronald Frederick Schaefer, MD's NPI number?
Ronald Frederick Schaefer, MD's National Provider Identifier (NPI) is 1679641278, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Frederick Schaefer, MD located?
The NPPES record lists a practice address at 888 S King St, Honolulu, HI, 96813. Phone: (808) 722-6314. Providers update this record themselves, so call before visiting.
How can I verify Ronald Frederick Schaefer, MD's license?
NPPES lists Hawaii license number 5871, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.