Karyn Marie Ridgeway, M.D.
Emergency Medicine Physician · Quincy, MA
Karyn Marie Ridgeway, M.D. is an emergency medicine physician with a practice address in Quincy, Massachusetts, and NPI 1134362619, issued on Apr 13, 2009. Check the license (Massachusetts 250832, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Karyn Marie Ridgeway
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 250832 MA
Self-reported in NPPES; status is on the state search - Practice location
- 114 Whitwell Street, Quincy, MA 02169
- Phone
- (617) 773-6120
- Enumerated
- Apr 13, 2009
- Record last updated
- Sep 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200225000469); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 114 Whitwell Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Bond, PAMedical Physician Assistant1083816102
- Christian Caruso, M.D.Hospitalist Physician1205884475
- Erlinda McGinty, LMHC ACMTMusic Therapist1346468212
Verify Karyn Marie Ridgeway in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 250832Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average emergency medicine physician in 2024
23 Medicare Part D claims for 20 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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
- Missoula Community Health Services, IncSuperior, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karyn Marie Ridgeway among 1,829 emergency medicine physician records in Massachusetts
Karyn Marie Ridgeway, M.D. is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 53% of them.
- NPI issued2009 · 53% of these records are older, 44% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2009 · median 2011 among the 1,200 with a school on file
- Record last updated2012 · 57% 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 Massachusetts 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 Massachusetts
There are 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Quincy → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Robert Dart, MDQuincy, MA 021691518956051
- Stephen McElroy, MDQuincy, MA 021691639168172
- Christina Moreau, MDQuincy, MA 021691124017660
- Anna Sinclair, MDQuincy, MA 021691972592418
- Sonia Beauvais, MDMelrose, MA 021761891733218
- Elijah Berg, MDMelrose, MA 021761902875107
- Shannon Bottari, MDMelrose, MA 021761922020353
- Christopher Defazio, MDMelrose, MA 021761396711602
Common questions
What is Karyn Marie Ridgeway, M.D.'s NPI number?
Karyn Marie Ridgeway, M.D.'s National Provider Identifier (NPI) is 1134362619, issued on Apr 13, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Karyn Marie Ridgeway, M.D. located?
The NPPES record lists a practice address at 114 Whitwell Street, Quincy, MA, 02169. Phone: (617) 773-6120. Providers update this record themselves, so call before visiting.
How can I verify Karyn Marie Ridgeway, M.D.'s license?
NPPES lists Massachusetts license number 250832, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karyn Marie Ridgeway, M.D. prescribe under Medicare Part D?
In 2024, Karyn Marie Ridgeway, M.D. had 23 Medicare Part D claims for 20 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.