Margo Vassar, M.D.
Cardiovascular Disease Physician · Honolulu, HI
Margo Vassar, M.D. is a cardiovascular disease physician with a practice address in Honolulu, Hawaii, and NPI 1578784708, issued on May 2, 2007. Check the license (Hawaii MD-15863, as entered in NPPES) on the Hawaii Medical Board; the Medicare figures below come from public CMS files.
- Name
- Margo Vassar
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- MD-15863 HI
Self-reported in NPPES; status is on the state search - Practice location
- 550 S Beretania St Ste 601, Honolulu, HI 96813
- Phone
- (808) 691-8900
- Enumerated
- May 2, 2007
- Record last updated
- May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (808) 691-8919
- Medicaid ID
- 648553 HI
- Medicare enrollment
- Enrolled (PECOS I20110119000371); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 84 in Hawaii → Look up another NPI →
Also registered at 550 S Beretania St Ste 601
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauryn AndoGeriatric Medicine (Family Medicine) Physician1912354382
- Monica Cheung Katz, MDFamily Medicine Physician1275943755
- Ji Eun Ching, DOFamily Medicine Physician1801323951
- Susan Christensen, M.D.Geriatric Medicine (Family Medicine) Physician1326019704
- Jeremy Chun, M.D.Geriatric Medicine (Internal Medicine) Physician1598873465
- Gina Fujikami, M.D.Geriatric Medicine (Internal Medicine) Physician1598932535
Verify Margo Vassar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersHawaii Medical Board
Search for license MD-15863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
13 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $937.76
12 payments; by number, the most common kind was food and beverage; the largest payer was Abiomed. The 16,686 providers of this specialty with any payment received $3,819.56 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.
3 hospitals and group practices
- The Queens Medical CenterHonolulu, HI · Acute Care Hospitals3 of 5 stars
- Queens North Hawaii Community HospitalHonolulu, HI
- Queens University Medical GroupHonolulu, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Margo Vassar among 84 cardiovascular disease physician records in Hawaii
Margo Vassar, M.D. is one of 84 cardiovascular disease physician records with a practice address in Hawaii. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 57% of them.
- NPI issued2007 · 57% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2001 · median 2000 among the 56 with a school on file
- Record last updated2020 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Hawaii
There are 84 cardiovascular disease physician records in Hawaii.
All 84 in Hawaii → Every provider in Honolulu → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Dipanjan Banerjee, MDHonolulu, HI 968131295787299
- Jen-Cheng Chen, M.D.Honolulu, HI 968131386752889
- Joon Choi, M.D./PH.DHonolulu, HI 968131356376081
- Hingson Chun, M.D.Honolulu, HI 968131891883468
- Michael Dang, M.D.Honolulu, HI 968131881615326
- Chari Hart, M.D.Honolulu, HI 968131154378701
- Wesley Kai, M.D.Honolulu, HI 968131598853160
- John Kristofich, M.D.Honolulu, HI 968131336237916
Common questions
What is Margo Vassar, M.D.'s NPI number?
Margo Vassar, M.D.'s National Provider Identifier (NPI) is 1578784708, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Margo Vassar, M.D. located?
The NPPES record lists a practice address at 550 S Beretania St Ste 601, Honolulu, HI, 96813. Phone: (808) 691-8900. Providers update this record themselves, so call before visiting.
How can I verify Margo Vassar, M.D.'s license?
NPPES lists Hawaii license number MD-15863, 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.
How much does Margo Vassar, M.D. prescribe under Medicare Part D?
In 2024, Margo Vassar, M.D. had 13 Medicare Part D claims; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
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.