Stephen Brett Marko, M.D.
Critical Care Medicine (Internal Medicine) Physician · Manchester, NH
Stephen Brett Marko, M.D. is a critical care medicine (internal medicine) physician with a practice address in Manchester, New Hampshire, and NPI 1265843718, issued on May 17, 2014. Check the license (New Hampshire 20652, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen Brett Marko
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 20652 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1 Elliot Way, Manchester, NH 03103
- Phone
- (603) 663-2710
- Enumerated
- May 17, 2014
- Record last updated
- Oct 4, 2024
- Medicare enrollment
- Enrolled (PECOS I20200825002323); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 22 in New Hampshire → Look up another NPI →
Also registered at 1 Elliot Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryan AjaCertified Registered Nurse Anesthetist1194184580
- Bridget Alcorn, NPAdult Health Nurse Practitioner1457300352
- Jaime Altabet, M.D.Diagnostic Radiology Physician1760820609
- Nicholas AngeloneFamily Nurse Practitioner1124850680
- David Arend, MDAnesthesiology Physician1639133119
- Paul Arnstein, ARNPNurse Practitioner1184686131
Verify Stephen Brett Marko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 20652Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3 hospitals and group practices
- Alice Peck Day Memorial HospitalLebanon, NH · Critical Access Hospitals4 of 5 stars
- Dartmouth-Hitchcock ClinicLebanon, NH
- Elliot Professional ServicesManchester, NH
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.
Stephen Brett Marko among 22 critical care medicine (internal medicine) physician records in New Hampshire
Stephen Brett Marko, M.D. is one of 22 critical care medicine (internal medicine) physician records with a practice address in New Hampshire. 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 2014, is newer than 86% of them.
- NPI issued2014 · 86% of these records are older, 9% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2014 · median 2003 among the 19 with a school on file
- Record last updated2024 · 55% 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 New Hampshire 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 New Hampshire
There are 22 critical care medicine (internal medicine) physician records in New Hampshire.
All 22 in New Hampshire → Every provider in Manchester → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Christopher Brauer, MDManchester, NH 031031366411647
- Ryan Clouser, D.O.Manchester, NH 031031780650382
- Kevin Desrosiers, MD, MPHManchester, NH 031031306062054
- Jennifer Duprey, DOManchester, NH 031031982772836
- Henry Ess, DOManchester, NH 031031922032671
- Tipton Hartman-Heaney, D.O.Manchester, NH 031031205037801
- Stephen Loosigian, DOManchester, NH 031031477522753
- Danira Mayes, MDManchester, NH 031031215061817
Common questions
What is Stephen Brett Marko, M.D.'s NPI number?
Stephen Brett Marko, M.D.'s National Provider Identifier (NPI) is 1265843718, issued on May 17, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Brett Marko, M.D. located?
The NPPES record lists a practice address at 1 Elliot Way, Manchester, NH, 03103. Phone: (603) 663-2710. Providers update this record themselves, so call before visiting.
How can I verify Stephen Brett Marko, M.D.'s license?
NPPES lists New Hampshire license number 20652, 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.
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.