William S. Palmer, MD
Internal Medicine Physician · Windsor, VT
William S. Palmer, MD is an internal medicine physician with a practice address in Windsor, Vermont, and NPI 1356337984, issued on Sep 20, 2005. Check the license (Vermont 042-0009027, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- William S. Palmer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 042-0009027 VT
Self-reported in NPPES; status is on the state search - Practice location
- 289 County RD, Windsor, VT 05089
- Phone
- (802) 674-7300
- Enumerated
- Sep 20, 2005
- Record last updated
- Mar 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (802) 674-7314
- Medicaid ID
- 0RE1161 VT
- Medicare enrollment
- Enrolled (PECOS I20050930000187); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 326 in Vermont → Look up another NPI →
Also registered at 289 County RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William S. Palmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 042-0009027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
59 Medicare Part D claims for 34 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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
- Windsor Hospital CorporationWindsor, VT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William S. Palmer among 326 internal medicine physician records in Vermont
William S. Palmer, MD is one of 326 internal medicine physician records with a practice address in Vermont. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated1987 · median 2007 among the 177 with a school on file
- Record last updated2021 · 71% 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 Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Windsor
They are 9 of the 120 NPPES records with a practice address in Windsor, and 326 internal medicine physician records in Vermont.
All 326 in Vermont → Every provider in Windsor → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Francesco Congiusta, MDWindsor, VT 050891952822116
- Katherine Devine, MDWindsor, VT 050891386629202
- Dale Gephart, MDWindsor, VT 050891295720860
- Herbert Ip, MDWindsor, VT 050891093027443
- Ivan Levin, M.D.Windsor, VT 050891477848240
- Amanda Ratliff, MDWindsor, VT 050891447246087
- David Russo, MDWindsor, VT 050891922094291
- Marlene Sachs, MDWindsor, VT 050891770579344
Common questions
What is William S. Palmer, MD's NPI number?
William S. Palmer, MD's National Provider Identifier (NPI) is 1356337984, issued on Sep 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William S. Palmer, MD located?
The NPPES record lists a practice address at 289 County RD, Windsor, VT, 05089. Phone: (802) 674-7300. Providers update this record themselves, so call before visiting.
How can I verify William S. Palmer, MD's license?
NPPES lists Vermont license number 042-0009027, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-medical-practice. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William S. Palmer, MD prescribe under Medicare Part D?
In 2024, William S. Palmer, MD had 59 Medicare Part D claims for 34 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.