Ioannis John Demarakos, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Seattle, WA
Ioannis John Demarakos, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Seattle, Washington, and NPI 1922622653, issued on May 28, 2020. Check the license (Washington TR61290864, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Ioannis John Demarakos
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- TR61290864 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1959 NE Pacific St., Seattle, WA 98195
- Phone
- (206) 520-5000
- Enumerated
- May 28, 2020
- Record last updated
- Oct 6, 2022
- Medicare enrollment
- Enrolled (PECOS I20221011002244); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1959 NE Pacific St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Danielle Abrass, PA-CPhysician Assistant1184140717
- Syeda Ahmad, M.DNephrology Physician1255742284
- Ahsen Ahmed, MDRadiation Oncology Physician1417510900
Verify Ioannis John Demarakos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license TR61290864Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $6,320.56
8 payments; by number, the most common kind was food and beverage; the largest payer was TransMedics, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 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.
Bills Medicare through one group practice
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Washington
There are 120 thoracic surgery (cardiothoracic vascular surgery) physician records in Washington.
Other thoracic surgery (cardiothoracic vascular surgery) physician records in Washington
- Alexander Abdullayev, MDOlympia, WA1538693015
- Jennifer Abelson, MDOlympia, WA1497989057
- Mark Adams, MDBremerton, WA1043202450
- Mastaneh Ahmadi-Kashani, MDEverett, WA1275768186
- Bassel Al-Alao, MDSeattle, WA1326471103
- Luis Fernando Alberton, M.D.Everett, WA1588051494
- Gabriel Aldea, M.D.Seattle, WA1952480758
- Charles Anderson, M.D.Bremerton, WA1669439527
- Joseph Austin, M.D.Everett, WA1134189699
- Mark Awolesi, MDBellingham, WA1871605485
Common questions
What is Ioannis John Demarakos, MD's NPI number?
Ioannis John Demarakos, MD's National Provider Identifier (NPI) is 1922622653, issued on May 28, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ioannis John Demarakos, MD located?
The NPPES record lists a practice address at 1959 NE Pacific St., Seattle, WA, 98195. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Ioannis John Demarakos, MD's license?
NPPES lists Washington license number TR61290864, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Ioannis John Demarakos, MD's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.