William J. Ruth, MD
Emergency Medicine Physician · South Portland, ME
William J. Ruth, MD is an emergency medicine physician with a practice address in South Portland, Maine, and NPI 1306931340, issued on Oct 4, 2006. Check the license (Maine MD15249, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- William J. Ruth
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD15249 ME
Self-reported in NPPES; status is on the state search - Practice location
- 50 Foden RD Ste 3, South Portland, ME 04106
- Phone
- (207) 523-8500
- Enumerated
- Oct 4, 2006
- Record last updated
- Mar 3, 2026
- Fax
- (207) 523-8591
- Medicare enrollment
- Enrolled (PECOS I20050927001191); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 1997
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 466 in Maine → Look up another NPI →
Also registered at 50 Foden RD Ste 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Becker, MDEmergency Medicine Physician1447325816
- Marian Behmer, PA-CPhysician Assistant1083100341
- Sadie Carter, MDEmergency Medicine Physician1376742098
- Lauren Howard, NP-CFamily Nurse Practitioner1639618317
- Allyson Howe, MDSports Medicine (Family Medicine) Physician1679662563
- Timothy McAteer, MDSports Medicine (Family Medicine) Physician1619042595
Verify William J. Ruth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD15249Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average emergency medicine physician in 2024
288 Medicare Part D claims for 224 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Doxycycline Hyclate36 claims
- Amoxicillin-Clavulanate Potass29 claims
- Methylprednisolone26 claims
- Prednisone25 claims
- Albuterol Sulfate Hfa21 claims
- Sulfamethoxazole-Trimethoprim14 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.
Bills Medicare through one group practice
- Intermed PASouth Portland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William J. Ruth among 466 emergency medicine physician records in Maine
William J. Ruth, MD 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 62% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1997 · median 2011 among the 293 with a school on file
- Record last updated2026 · 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).
Emergency Medicine Physician providers in Maine
There are 466 emergency medicine physician records in Maine.
All 466 in Maine → Every provider in South Portland → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Mary Becker, MDSouth Portland, ME 041061447325816
- Sadie Carter, MDSouth Portland, ME 041061376742098
- Tammy Labonty, MDSouth Portland, ME 041061932286341
- Amy Parker, MDSouth Portland, ME 041061518073725
- Julie Pelletier, MDSouth Portland, ME 041061336469063
- Ronald Reilly, M.D.South Portland, ME 041061194725465
- Eric Sampson, MDSouth Portland, ME 041061619054053
- Amy Sedgwick, MDSouth Portland, ME 041061366510208
Common questions
What is William J. Ruth, MD's NPI number?
William J. Ruth, MD's National Provider Identifier (NPI) is 1306931340, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Ruth, MD located?
The NPPES record lists a practice address at 50 Foden RD Ste 3, South Portland, ME, 04106. Phone: (207) 523-8500. Providers update this record themselves, so call before visiting.
How can I verify William J. Ruth, MD's license?
NPPES lists Maine license number MD15249, 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 William J. Ruth, MD prescribe under Medicare Part D?
In 2024, William J. Ruth, MD had 288 Medicare Part D claims for 224 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.