NPPES file of Aug 9, 2026

Chung-Huan Johnny Sun, M.D.

Neurocritical Care Physician · Honolulu, HI

Chung-Huan Johnny Sun, M.D. is a neurocritical care physician with a practice address in Honolulu, Hawaii, and NPI 1912326182, issued on Apr 15, 2014. Check the license (Hawaii MD-21173, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912326182
Name
Chung-Huan Johnny Sun
Credential
M.D.
Primary taxonomy
Neurocritical Care Physician 2084A2900X
License numbers
MD-21173 HI
A153846 CA
Self-reported in NPPES; status is on the state search
Practice location
1301 Punchbowl St, Honolulu, HI 96813
Phone
(808) 691-1000
Enumerated
Apr 15, 2014
Record last updated
May 13, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
000151 HI
Medicare enrollment
Enrolled (PECOS I20200708000777); accepts Medicare assignment
Medical or professional school
Emory University School Of Medicine, 2014
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

4 nearest neurocritical care physician records → All 5 in Hawaii → Look up another NPI →

Also registered at 1301 Punchbowl St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brenda Abbotnakandakari, RNDiabetes Educator Registered Nurse1760705248
  2. Janette AbramowitzPsychiatry Physician1275952335
  3. Natalie AdolfPhysician Assistant1396282414
  4. Hessam Afshari, MDEmergency Medicine Physician1811217573
  5. Cheryl Ann Afuso-Sumimoto, APRNOncology Clinical Nurse Specialist1750929253
  6. Kyan Renie AgbayaniInternal Medicine Physician1083101323

Verify Chung-Huan Johnny Sun in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersHawaii Medical Board
    Search for license MD-21173    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Hawaii license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Queens University Medical GroupHonolulu, HI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Neurocritical Care Physician providers in Hawaii

There are 5 neurocritical care physician records in Hawaii.

All 5 in Hawaii → Every provider in Honolulu → Neurocritical Care Physician nationwide →

The 4 neurocritical care physician records with the nearest ZIP codes

  1. Stacy Brown, MDHonolulu, HI 968131639582042
  2. Matthew Koenig, M.D.Honolulu, HI 968131225142151
  3. Kazuma Nakagawa, MDHonolulu, HI 968131881674539
  4. Samuel Tsappidi, MDHonolulu, HI 968131255537122

Common questions

What is Chung-Huan Johnny Sun, M.D.'s NPI number?

Chung-Huan Johnny Sun, M.D.'s National Provider Identifier (NPI) is 1912326182, issued on Apr 15, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Chung-Huan Johnny Sun, M.D. located?

The NPPES record lists a practice address at 1301 Punchbowl St, Honolulu, HI, 96813. Phone: (808) 691-1000. Providers update this record themselves, so call before visiting.

How can I verify Chung-Huan Johnny Sun, M.D.'s license?

NPPES lists Hawaii license number MD-21173, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.