Zachary Allegretti, MD
NPI 1952807554 · Family Medicine Physician · Lake Geneva, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Allegretti, MD is a Family Medicine Physician provider in Lake Geneva, WI (NPI 1952807554).
Provider details
- NPI number
- 1952807554
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 52613 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 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
1,058 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 | 354 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 262 | $85 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 195 | $120 |
| Administration of Influenza Virus VaccineG0008 | 88 | $30 |
| Admn Sarscov2 Vacc 1 Dose90480 | 37 | $41 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 33 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 128 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 671 | 185 |
| Amlodipine Besylate | 405 | 114 |
| Losartan Potassium | 346 | 99 |
| Metoprolol Succinate | 277 | 77 |
| Levothyroxine Sodium | 253 | 63 |
| Lisinopril | 251 | 66 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-03
- Last updated
- 2021-11-18
- Certified
- 2021-11-18
Frequently asked questions
- What is Zachary Allegretti's NPI number?
- Zachary Allegretti's National Provider Identifier (NPI) is 1952807554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Allegretti's specialty?
- Zachary Allegretti is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Allegretti located?
- Zachary Allegretti's practice location on file with NPPES is 146 E Geneva Sq, Lake Geneva, WI 53147-9694.
- What is Zachary Allegretti's phone number?
- The practice phone number listed in the NPPES registry for Zachary Allegretti is (262) 249-5000.
- Does Zachary Allegretti accept Medicare?
- Zachary Allegretti is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Allegretti's NPI active?
- Yes — Zachary Allegretti's NPI (1952807554) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.