Katharine Ewall
Internal Medicine Physician · Northampton, MA
Katharine Ewall is an internal medicine physician with a practice address in Northampton, Massachusetts, and NPI 1922217751, issued on May 21, 2007. Check the license (Massachusetts 247001, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Katharine Ewall
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 247001 MA
Self-reported in NPPES; status is on the state search - Practice location
- 30 Locust St, Northampton, MA 01060
- Phone
- (413) 582-2792
- Enumerated
- May 21, 2007
- Record last updated
- Nov 1, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (413) 582-4675
- Medicare enrollment
- Enrolled (PECOS I20111201000046); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 30 Locust St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mae Beckford-Bruno, RNStudent in an Organized Health Care Education/Training Program1043134661
- Linda Benoit, LICSWClinical Social Worker1588729610
- Charles Bernstein, MDDiagnostic Radiology Physician1699734442
Verify Katharine Ewall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 247001Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mass General Brigham Medical Group Western Massachusetts IncNorthampton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katharine Ewall among 6,825 internal medicine physician records in Massachusetts
Katharine Ewall is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2007 · median 2004 among the 4,103 with a school on file
- Record last updated2016 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 internal medicine physician records list a practice address in Northampton
They are 21 of the 1,816 NPPES records with a practice address in Northampton, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Northampton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Alpern, MDNorthampton, MA 010601568422608
- Elizabeth Armstrong, M.D.Northampton, MA 010601881626786
- Edward Dean, MDNorthampton, MA 010601376528638
- Tara Dumont, MDNorthampton, MA 010601467515163
- Peter Elsea, MDNorthampton, MA 010601699731182
- Andrew Hall, M.D.Northampton, MA 010601073593679
- Howard Klein, M.D.Northampton, MA 010601063456325
- Anne McKinnon, MDNorthampton, MA 010601255311452
Common questions
What is Katharine Ewall's NPI number?
Katharine Ewall's National Provider Identifier (NPI) is 1922217751, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katharine Ewall located?
The NPPES record lists a practice address at 30 Locust St, Northampton, MA, 01060. Phone: (413) 582-2792. Providers update this record themselves, so call before visiting.
How can I verify Katharine Ewall's license?
NPPES lists Massachusetts license number 247001, 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.
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.