Theodore John Iwashyna, MD
Critical Care Medicine (Internal Medicine) Physician · Ann Arbor, MI
Theodore John Iwashyna, MD is a critical care medicine (internal medicine) physician with a practice address in Ann Arbor, Michigan, and NPI 1609939115, issued on Dec 18, 2006. Check the license (Michigan 4301091903, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Theodore John Iwashyna
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 4301091903 MI
D95263 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-4000
- Enumerated
- Dec 18, 2006
- Record last updated
- Apr 5, 2023
- Medicare enrollment
- Enrolled (PECOS I20220928002297); may accept Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 178 in Michigan → Look up another NPI →
Also registered at 1500 E Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryan Aaron, MDObstetrics & Gynecology Physician1578307724
- Keith Aaronson, MDAdvanced Heart Failure and Transplant Cardiology Physician1144305301
- Rajani Aatre, M.S., M.SC.Genetic Counselor (M.S.)1962122457
- Anjelica Abate, MDDiagnostic Radiology Physician1841819216
- Nicole Abbott, CRNACertified Registered Nurse Anesthetist1790329860
- Ahmed Abdel-Latif, M.D.Interventional Cardiology Physician1518181239
Verify Theodore John Iwashyna in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301091903Check 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 practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theodore John Iwashyna among 178 critical care medicine (internal medicine) physician records in Michigan
Theodore John Iwashyna, MD is one of 178 critical care medicine (internal medicine) physician records with a practice address in Michigan. 91% 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, 64% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2002 · median 2008 among the 136 with a school on file
- Record last updated2023 · 30% 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 Michigan 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 Michigan
There are 178 critical care medicine (internal medicine) physician records in Michigan.
All 178 in Michigan → Every provider in Ann Arbor → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Shahid Ahmad, M.D.Ann Arbor, MI 481091205182284
- Natasha Bagdasarian, MDAnn Arbor, MI 481091538286992
- Sara Mirza, MDAnn Arbor, MI 481091548416407
- Maor Sauler, MDAnn Arbor, MI 481091013191949
- Kaitlyn Vitale, MDAnn Arbor, MI 481091902257140
- Asif Munir, M.D.Dearborn, MI 481201184695330
- Adeeb Atassi, M.D.Dearborn, MI 481241013020254
- Dolly Bondarian, M.D.Dearborn, MI 481241679583504
Common questions
What is Theodore John Iwashyna, MD's NPI number?
Theodore John Iwashyna, MD's National Provider Identifier (NPI) is 1609939115, issued on Dec 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Theodore John Iwashyna, MD located?
The NPPES record lists a practice address at 1500 E Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-4000. Providers update this record themselves, so call before visiting.
How can I verify Theodore John Iwashyna, MD's license?
NPPES lists Michigan license number 4301091903, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Theodore John Iwashyna, MD's MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. 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.