Mark Cieniawski, M.D.
Internal Medicine Physician · Portland, ME
Mark Cieniawski, M.D. is an internal medicine physician with a practice address in Portland, Maine, and NPI 1205870607, issued on Jun 15, 2006. Check the license (Maine 013544, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Cieniawski
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 013544 ME
Self-reported in NPPES; status is on the state search - Practice location
- 144 State St, Portland, ME 04101
- Phone
- (207) 879-3040
- Enumerated
- Jun 15, 2006
- Record last updated
- Sep 4, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (207) 879-3947
- Medicare enrollment
- Enrolled (PECOS I20050119000525); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1991
- Entity
- Type 1 · individual
Also registered at 144 State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Francis Altman, M.D.Anesthesiology Physician1033138797
- David Andrews, M.D.Anesthesiology Physician1861429268
- Sandra Aubelangella, CNSPsychiatric/Mental Health Nurse Practitioner1306883129
- Mary Louise Bates, M.D.Anesthesiology Physician1427035666
- Normand Begin, CRNACertified Registered Nurse Anesthetist1235186412
- Denise BenedictPhysician Office Based Coding Specialist1487907978
Verify Mark Cieniawski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 013544Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.5 times the Medicare Part D claims of the average internal medicine physician in 2024
14,295 Medicare Part D claims for 721 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 200 claims were for opioids.
Most prescribed
- Atorvastatin Calcium938 claims
- Amlodipine Besylate652 claims
- Metoprolol Succinate580 claims
- Losartan Potassium528 claims
- Lisinopril511 claims
- Pantoprazole Sodium468 claims
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 88.5 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).
One hospital affiliation
- Northern Maine Medical CenterFort Kent, ME · Critical Access Hospitals
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).
145 internal medicine physician records list a practice address in Portland
They are 145 of the 6,022 NPPES records with a practice address in Portland, and 597 internal medicine physician records in Maine.
All 145 in Portland → All 597 in Maine → Every provider in Portland →
Other internal medicine physician records in Maine
- George Abboud, MDBiddeford, ME1376612945
- Karen Abernathy, M.D.Rockport, ME1124312335
- Hassan Abouleish, MDHoulton, ME1255300307
- Philip Abraham, M.D.Kittery, ME1497750764
- Elizabeth Ackerson, MDPortland, ME1912920117
- Lindsey Ackley-Pozzessere, DOBrunswick, ME1477991842
- Todd Adams, MDMoody, ME1427165778
- Muhammad Umer Ahmed, MDBangor, ME1134893183
- Samer Al-Ameri, MDBangor, ME1225514854
- Ali Al-OmariBangor, ME1447634431
Common questions
What is Mark Cieniawski, M.D.'s NPI number?
Mark Cieniawski, M.D.'s National Provider Identifier (NPI) is 1205870607, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Cieniawski, M.D. located?
The NPPES record lists a practice address at 144 State St, Portland, ME, 04101. Phone: (207) 879-3040. Providers update this record themselves, so call before visiting.
How can I verify Mark Cieniawski, M.D.'s license?
NPPES lists Maine license number 013544, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Cieniawski, M.D. prescribe under Medicare Part D?
In 2024, Mark Cieniawski, M.D. had 14,295 Medicare Part D claims for 721 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Cieniawski, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.5 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.