Stephen A. Alsdorf, M.D
Family Medicine Physician · Great Barrington, MA
Stephen A. Alsdorf, M.D is a family medicine physician with a practice address in Great Barrington, Massachusetts, and NPI 1952358749, issued on May 28, 2006. Check the license (Massachusetts 226367, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen A. Alsdorf
- Credential
- M.D
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 226367 MA
Self-reported in NPPES; status is on the state search - Practice location
- 444 Stockbridge Road, Great Barrington, MA 01230
- Phone
- (413) 528-8580
- Enumerated
- May 28, 2006
- Record last updated
- Jul 25, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (413) 528-8583
- Medicaid IDs
- 110041695A MA
2111314 MA - Medicare enrollment
- Enrolled (PECOS I20051215000382); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2002
- Entity
- Type 1 · individual
Also registered at 444 Stockbridge Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Brigham Gariepy, FNPFamily Nurse Practitioner1578979662
- Tamera Gebo-Wilber, PHYSICAL THERAPISTPhysical Therapist1285051938
- Claire Horth, M.DFamily Medicine Physician1093127656
- Kathryn Korte, FNPFamily Nurse Practitioner1043211956
- Mary Elizabeth Merritt, CLC, PH.DLactation Consultant (Non-RN)1457882714
- Erin Pacheco, R.D., L.D.NPediatric Nutrition Registered Dietitian1447397740
Verify Stephen A. Alsdorf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 226367Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average family medicine physician in 2024
4,351 Medicare Part D claims for 480 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 91 claims were for opioids.
Most prescribed
- Atorvastatin Calcium364 claims
- Amlodipine Besylate215 claims
- Lisinopril183 claims
- Losartan Potassium166 claims
- Rosuvastatin Calcium138 claims
- Levothyroxine Sodium135 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
- Community Health Programs IncGreat Barrington, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
8 family medicine physician records list a practice address in Great Barrington
They are 8 of the 278 NPPES records with a practice address in Great Barrington, and 2,265 family medicine physician records in Massachusetts.
All 8 in Great Barrington → All 2,265 in Massachusetts → Every provider in Great Barrington →
Other family medicine physician records in Massachusetts
- Salah Abass, M.D.Methuen, MA1417959776
- Majed Abbas, MDLowell, MA1346827870
- Sheila Abdallah, MDWorcester, MA1821356312
- Omar Abduljabar, M.D.Springfield, MA1770978843
- Jonathan Abel, DOSpringfield, MA1700897196
- Mohamed Abib, MDSturbridge, MA1639281090
- Kevin Abraham, M.D.Worcester, MA1689037673
- Janet Abrahamian, M.D.West Boylston, MA1932156627
- John Abramson, M.D.Ipswich, MA1275613903
- John Paul Abroguena, MDPlainville, MA1235361080
Common questions
What is Stephen A. Alsdorf, M.D's NPI number?
Stephen A. Alsdorf, M.D's National Provider Identifier (NPI) is 1952358749, issued on May 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen A. Alsdorf, M.D located?
The NPPES record lists a practice address at 444 Stockbridge Road, Great Barrington, MA, 01230. Phone: (413) 528-8580. Providers update this record themselves, so call before visiting.
How can I verify Stephen A. Alsdorf, M.D's license?
NPPES lists Massachusetts license number 226367, 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 Stephen A. Alsdorf, M.D prescribe under Medicare Part D?
In 2024, Stephen A. Alsdorf, M.D had 4,351 Medicare Part D claims for 480 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.