Doctor profile · Federal record

Dr. Katharine Ewall

Internal Medicine Physician (CMS: Hospitalist) · Pediatrics Physician · Hospitalist Physician · Northampton, MA

  • NPI 1922217751
  • Accepts Medicare
  • 19 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
30 Locust St
Northampton, MA 010602052
(413) 582-2792
fax (413) 582-4675

Credentials & registration

NPPES · NUCC
NPI registered
May 2007 — 19 yrs on file
Profile last updated
November 1, 2016
Year of graduation
2007 — 19 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Massachusetts #247001

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1922217751. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
194
Distinct HCPCS
2
Medicare allowed
$31,430
HCPCS Description Services Patients Avg allowed
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 137 133 $175
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 57 56 $131

In context: peer comparison

Among 7 peers in Northampton Internal Medicine Physician, average services per provider: 104. This provider delivers 1.9× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Katharine Ewall's medical specialty?
Dr. Katharine Ewall practices Internal Medicine Physician in Northampton, MA.
Where does Dr. Katharine Ewall practice?
Dr. Katharine Ewall practices at 30 Locust St, Northampton, MA 010602052. Office phone: 4135822792.
What is Dr. Katharine Ewall's NPI?
Dr. Katharine Ewall's National Provider Identifier (NPI) is 1922217751, issued by NPPES.
Does Dr. Katharine Ewall accept Medicare assignment?
Yes. Dr. Katharine Ewall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katharine Ewall commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.