Athos John Rassias, MD
Critical Care Medicine (Anesthesiology) Physician · Lebanon, NH
Athos John Rassias, MD is a critical care medicine (anesthesiology) physician with a practice address in Lebanon, New Hampshire, and NPI 1609961119, issued on Oct 3, 2006. Check the license (New Hampshire 9258, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Athos John Rassias
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Anesthesiology) Physician 207LC0200X
- License number
- 9258 NH
Self-reported in NPPES; status is on the state search - Practice location
- Critical Care Medicine 1 Medical Center Drive, Lebanon, NH 03756
- Phone
- (603) 650-4642
- Enumerated
- Oct 3, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (603) 650-0614
- Medicare enrollment
- Enrolled (PECOS I20051105000191); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 1989
- Entity
- Type 1 · individual
8 nearest critical care medicine (anesthesiology) physician records → All 9 in New Hampshire → Look up another NPI →
Verify Athos John Rassias in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 9258Check 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): 76 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
- Dartmouth-Hitchcock ClinicLebanon, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Critical Care Medicine (Anesthesiology) Physician providers in New Hampshire
There are 9 critical care medicine (anesthesiology) physician records in New Hampshire.
All 9 in New Hampshire → Every provider in Lebanon → Critical Care Medicine (Anesthesiology) Physician nationwide →
The 8 critical care medicine (anesthesiology) physician records with the nearest ZIP codes
- Dawn Barclay, M.D.Lebanon, NH 037561649375585
- James Cappadona, M.D.Lebanon, NH 037561568758985
- Anne-Laure Dassier, M.DLebanon, NH 037561801328190
- William Dewhirst, M.D.Lebanon, NH 037561245267426
- Matthew Koff, M.D. M.S.Lebanon, NH 037561154346138
- Tariq Naseem, MDLebanon, NH 037561376780247
- Stephen Surgenor, M.D.Lebanon, NH 037561194740233
- Matthew Anderson, M.D.Keene, NH 034311790927168
Common questions
What is Athos John Rassias, MD's NPI number?
Athos John Rassias, MD's National Provider Identifier (NPI) is 1609961119, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Athos John Rassias, MD located?
The NPPES record lists a practice address at Critical Care Medicine 1 Medical Center Drive, Lebanon, NH, 03756. Phone: (603) 650-4642. Providers update this record themselves, so call before visiting.
How can I verify Athos John Rassias, MD's license?
NPPES lists New Hampshire license number 9258, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Athos John Rassias, MD's MIPS final score?
The 2023 MIPS final score is 76 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.