William Peter Schmitt, MD
Internal Medicine Physician · Charlestown, MA
William Peter Schmitt, MD is an internal medicine physician with a practice address in Charlestown, Massachusetts, and NPI 1619958808, issued on Nov 7, 2005. Check the license (Massachusetts 79580, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- William Peter Schmitt
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 79580 MA
Self-reported in NPPES; status is on the state search - Practice location
- 73 High St, Charlestown, MA 02129
- Phone
- (617) 724-8135
- Enumerated
- Nov 7, 2005
- Record last updated
- Feb 17, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (617) 724-8010
- Medicaid ID
- 3129543 MA
- Medicare enrollment
- Enrolled (PECOS I20040504000863); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1991
- 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 73 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Quinn Almerico-Leclair, LICSWClinical Social Worker1902158173
- Chelsea AtzingerClinical Social Worker1093452187
- Christina Biagiotti, P.T.Physical Therapist1942337704
- Robin BleicherClinical Social Worker1104717289
- Tiara Calhoun, MDPulmonary Disease Physician1902326101
- Sara Callahan, FNPFamily Nurse Practitioner1942722533
Verify William Peter Schmitt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79580Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% more Medicare Part D claims than the average internal medicine physician in 2024
5,558 Medicare Part D claims for 348 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 260 claims were for opioids.
Most prescribed
- Atorvastatin Calcium307 claims
- Omeprazole236 claims
- Gabapentin233 claims
- Amlodipine Besylate216 claims
- Metoprolol Succinate160 claims
- Lisinopril148 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
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Peter Schmitt among 6,825 internal medicine physician records in Massachusetts
William Peter Schmitt, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1991 · median 2004 among the 4,103 with a school on file
- Record last updated2014 · 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).
12 internal medicine physician records list a practice address in Charlestown
They are 12 of the 421 NPPES records with a practice address in Charlestown, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Charlestown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Hugo Calavia Liano, MDBoston, MA 021291568026367
- Caitlin Cohen, MDCharlestown, MA 021291710368121
- Michael Garrity, MDCharlestown, MA 021291932181369
- Lauren Glickman, MDCharlestown, MA 021291508856808
- Rajani Larocca, MDCharlestown, MA 021291144204884
- Wei Sum Li, M.D.Charlestown, MA 021291629425046
- Joyce Liu, MDCharlestown, MA 021291144395179
- Cheryl Monteiro, MDCharlestown, MA 021291649700253
Common questions
What is William Peter Schmitt, MD's NPI number?
William Peter Schmitt, MD's National Provider Identifier (NPI) is 1619958808, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Peter Schmitt, MD located?
The NPPES record lists a practice address at 73 High St, Charlestown, MA, 02129. Phone: (617) 724-8135. Providers update this record themselves, so call before visiting.
How can I verify William Peter Schmitt, MD's license?
NPPES lists Massachusetts license number 79580, 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 William Peter Schmitt, MD prescribe under Medicare Part D?
In 2024, William Peter Schmitt, MD had 5,558 Medicare Part D claims for 348 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.