Zachary Singer
NPI 1225371727 · Family Medicine Physician · Mequon, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Singer is a Family Medicine Physician provider in Mequon, WI (NPI 1225371727).
Provider details
- NPI number
- 1225371727
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 65416-021 (WI)
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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
718 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 | 232 | $118 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 111 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 98 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $85 |
| Administration of Influenza Virus VaccineG0008 | 45 | $30 |
| Admn Sarscov2 Vacc 1 Dose |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 413 | 116 |
| Losartan Potassium | 295 | 93 |
| Amlodipine Besylate | 284 | 89 |
| Rosuvastatin Calcium | 240 | 78 |
| Lisinopril | 198 | 59 |
| Metoprolol Succinate | 193 | 53 |
| Levothyroxine Sodium |
Practice location
Mailing address
Additional practice locations (1)
- 1821 S Stoughton RdMadison, WI 53716-2257Phone: (608) 260-6000Fax: (608) 260-6366
Registry dates
- Enumerated
- 2013-04-03
- Last updated
- 2025-08-26
- Certified
- 2025-08-26
Frequently asked questions
- What is Zachary Singer's NPI number?
- Zachary Singer's National Provider Identifier (NPI) is 1225371727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Singer's specialty?
- Zachary Singer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Singer located?
- Zachary Singer's practice location on file with NPPES is 6425 W Mequon Rd, Mequon, WI 53092-1855.
- What is Zachary Singer's phone number?
- The practice phone number listed in the NPPES registry for Zachary Singer is (262) 242-0051.
- Does Zachary Singer accept Medicare?
- Zachary Singer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Singer's NPI active?
- Yes — Zachary Singer's NPI (1225371727) is active in the NPPES registry as of the last update on 2025-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.