Seth Ritter, M.D.
Emergency Medicine Physician · Lewiston, ME
Seth Ritter, M.D. is an emergency medicine physician with a practice address in Lewiston, Maine, and NPI 1144531781, issued on Jun 29, 2010. Check the license (Maine MD20270, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Seth Ritter
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD20270 ME
Self-reported in NPPES; status is on the state search - Practice location
- 300 Main St, Lewiston, ME 04240
- Phone
- (207) 795-0111
- Enumerated
- Jun 29, 2010
- Record last updated
- Sep 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 466 in Maine → Look up another NPI →
Also registered at 300 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Maya Ahluwalia Hackett, DPTPhysical Therapist1700492865
- Donald Albee, CRNACertified Registered Nurse Anesthetist1437168903
- Joseph Anderson, DOPediatrics Physician1962853697
- Nicole Anderson, SLPSpeech-Language Pathologist1548644636
- Michelle AndrewsPhysical Therapist1326423237
Verify Seth Ritter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD20270Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average emergency medicine physician in 2024
126 Medicare Part D claims for 101 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Cephalexin16 claims
- Ondansetron Odt14 claims
- Doxycycline Hyclate12 claims
- Oxycodone Hcl11 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 MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Seth Ritter among 466 emergency medicine physician records in Maine
Seth Ritter, M.D. is one of 466 emergency medicine physician records with a practice address in Maine. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 57% of them.
- NPI issued2010 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2014 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 emergency medicine physician records list a practice address in Lewiston
They are 63 of the 1,728 NPPES records with a practice address in Lewiston, and 466 emergency medicine physician records in Maine.
All 466 in Maine → Every provider in Lewiston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Charles Armstrong, MDLewiston, ME 042401134191505
- William CollinsLewiston, ME 042401033181409
- Timothy Coury, MDLewiston, ME 042401831160209
- Richard D'Alessandro, MDLewiston, ME 042401467423830
- Michael Friendly, MDLewiston, ME 042401184696338
- Henk Goorhuis, MDLewiston, ME 042401780656033
- David Johnson, MDLewiston, ME 042401760454649
- Mary Claire Murphy, MDLewiston, ME 042401164494399
Common questions
What is Seth Ritter, M.D.'s NPI number?
Seth Ritter, M.D.'s National Provider Identifier (NPI) is 1144531781, issued on Jun 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Seth Ritter, M.D. located?
The NPPES record lists a practice address at 300 Main St, Lewiston, ME, 04240. Phone: (207) 795-0111. Providers update this record themselves, so call before visiting.
How can I verify Seth Ritter, M.D.'s license?
NPPES lists Maine license number MD20270, 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 Seth Ritter, M.D. prescribe under Medicare Part D?
In 2024, Seth Ritter, M.D. had 126 Medicare Part D claims for 101 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Seth Ritter, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.1 of 100. 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.