William Lorentzen
NPI 1942950837 · Internal Medicine Physician · Burlington, VT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Lorentzen is a Internal Medicine Physician provider in Burlington, VT (NPI 1942950837).
Provider details
- NPI number
- 1942950837
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 15 |
| Atorvastatin Calcium | 12 |
| Amlodipine Besylate | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 130 Fisher Rd Unit 1Berlin, VT 05602-8132Phone: (802) 371-4100
- 115 Porter DrMiddlebury, VT 05753-8629Phone: (802) 388-4701
Registry dates
- Enumerated
- 2022-03-24
- Last updated
- 2025-08-11
- Certified
- 2025-08-11
Frequently asked questions
- What is William Lorentzen's NPI number?
- William Lorentzen's National Provider Identifier (NPI) is 1942950837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lorentzen's specialty?
- William Lorentzen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Lorentzen located?
- William Lorentzen's practice location on file with NPPES is 111 Colchester Ave, Burlington, VT 05401-1473.
- What is William Lorentzen's phone number?
- The practice phone number listed in the NPPES registry for William Lorentzen is (802) 847-5162.
- Does William Lorentzen accept Medicare?
- William Lorentzen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Lorentzen's NPI active?
- Yes — William Lorentzen's NPI (1942950837) is active in the NPPES registry as of the last update on 2025-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.