William Schmitt, MD
NPI 1619958808 · Internal Medicine Physician · Charlestown, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Schmitt, MD is a Internal Medicine Physician provider in Charlestown, MA (NPI 1619958808).
Provider details
- NPI number
- 1619958808
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 79580 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
544 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 312 | $105 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 84 | $152 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 58 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $76 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 34 | $104 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 307 | 90 |
| Omeprazole | 236 | 63 |
| Gabapentin | 233 | 48 |
| Amlodipine Besylate | 216 | 61 |
| Metoprolol Succinate | 160 | 43 |
| Lisinopril | 148 | 46 |
| Lorazepam |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-07
- Last updated
- 2014-02-17
Frequently asked questions
- What is William Schmitt's NPI number?
- William Schmitt's National Provider Identifier (NPI) is 1619958808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Schmitt's specialty?
- William Schmitt is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Schmitt located?
- William Schmitt's practice location on file with NPPES is 73 High St, Charlestown, MA 02129-3026.
- What is William Schmitt's phone number?
- The practice phone number listed in the NPPES registry for William Schmitt is (617) 724-8135.
- Does William Schmitt accept Medicare?
- William Schmitt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Schmitt's NPI active?
- Yes — William Schmitt's NPI (1619958808) is active in the NPPES registry as of the last update on 2014-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.