Elizabeth A. Armstrong, M.D.
Internal Medicine Physician · Northampton, MA
Elizabeth A. Armstrong, M.D. is an internal medicine physician with a practice address in Northampton, Massachusetts, and NPI 1881626786, issued on Jul 7, 2006. Check the license (Massachusetts 227826, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Elizabeth A. Armstrong
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 227826 MA
Self-reported in NPPES; status is on the state search - Practice location
- 325B King St, Northampton, MA 01060
- Phone
- (413) 387-4100
- Enumerated
- Jul 7, 2006
- Record last updated
- Aug 29, 2022
- Fax
- (413) 387-4119
- Medicaid ID
- 110073543A MA
- Medicare enrollment
- Enrolled (PECOS I20061003000392); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 325B King St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Janet Curley, LICSWClinical Social Worker1376964775
- Kristin Dardano, MDObstetrics & Gynecology Physician1942384359
Verify Elizabeth A. Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 227826Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% more Medicare Part D claims than the average internal medicine physician in 2024
4,223 Medicare Part D claims for 396 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 107 claims were for opioids.
Most prescribed
- Levothyroxine Sodium192 claims
- Atorvastatin Calcium182 claims
- Clonazepam127 claims
- Lisinopril122 claims
- Amlodipine Besylate121 claims
- Losartan Potassium119 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
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elizabeth A. Armstrong among 6,825 internal medicine physician records in Massachusetts
Elizabeth A. Armstrong, M.D. 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2002 · median 2004 among the 4,103 with a school on file
- Record last updated2022 · 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
- 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
- James Most, MDNorthampton, MA 010601518982933
Common questions
What is Elizabeth A. Armstrong, M.D.'s NPI number?
Elizabeth A. Armstrong, M.D.'s National Provider Identifier (NPI) is 1881626786, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth A. Armstrong, M.D. located?
The NPPES record lists a practice address at 325B King St, Northampton, MA, 01060. Phone: (413) 387-4100. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth A. Armstrong, M.D.'s license?
NPPES lists Massachusetts license number 227826, 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 Elizabeth A. Armstrong, M.D. prescribe under Medicare Part D?
In 2024, Elizabeth A. Armstrong, M.D. had 4,223 Medicare Part D claims for 396 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.