Susan E. Dunn, MD
Internal Medicine Physician · Portland, ME
Susan E. Dunn, MD is an internal medicine physician with a practice address in Portland, Maine, and NPI 1508020694, issued on Jul 17, 2008. Check the license (Maine MD19227, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Susan E. Dunn
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD19227 ME
Self-reported in NPPES; status is on the state search - Practice location
- 84 Marginal Way, Portland, ME 04101
- Phone
- (207) 774-5816
- Enumerated
- Jul 17, 2008
- Record last updated
- May 28, 2026
- Fax
- (207) 523-8597
- Medicare enrollment
- Enrolled (PECOS I20200922002033); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 597 in Maine → Look up another NPI →
Also registered at 84 Marginal Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Susan E. Dunn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD19227Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,245 Medicare Part D claims for 193 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Furosemide134 claims
- Amlodipine Besylate111 claims
- Allopurinol93 claims
- Lisinopril66 claims
- Tamsulosin Hcl59 claims
- Sevelamer Carbonate50 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): 79.3 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
- Mainegeneral Medical CenterAugusta, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan E. Dunn among 597 internal medicine physician records in Maine
Susan E. Dunn, MD is one of 597 internal medicine physician records with a practice address in Maine. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 61% of them.
- NPI issued2008 · 61% of these records are older, 35% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2008 · median 2005 among the 369 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (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 597 in Maine → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joel Botler, MDPortland, ME 041011891764577
- Charles Cathcart, MDPortland, ME 041011861461535
- Wendy Cathcart, MDPortland, ME 041011295704971
- Thomas Claffey, MDPortland, ME 041011487623153
- Steven Dobieski, MDPortland, ME 041011942279617
- John Erickson, MDPortland, ME 041011043289713
- Debra Fuchs Ertman, MDPortland, ME 041011730158403
- Phyllidia Ku-Ruth, MDPortland, ME 041011497724108
Common questions
What is Susan E. Dunn, MD's NPI number?
Susan E. Dunn, MD's National Provider Identifier (NPI) is 1508020694, issued on Jul 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Susan E. Dunn, MD located?
The NPPES record lists a practice address at 84 Marginal Way, Portland, ME, 04101. Phone: (207) 774-5816. Providers update this record themselves, so call before visiting.
How can I verify Susan E. Dunn, MD's license?
NPPES lists Maine license number MD19227, 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 Susan E. Dunn, MD prescribe under Medicare Part D?
In 2024, Susan E. Dunn, MD had 1,245 Medicare Part D claims for 193 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Susan E. Dunn, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.