Larry Duenk, M.D.
NPI 1649236985 · Family Medicine Physician · Sheboygan, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larry Duenk, M.D. is a Family Medicine Physician provider in Sheboygan, WI (NPI 1649236985).
Provider details
- NPI number
- 1649236985
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 31301-020 (WI)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
25 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 | 13 | $93 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $61 |
Typical Medicare-allowed amounts for these services range $61–$93 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 48 | 22 |
| Atorvastatin Calcium | 39 | 19 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 32 | 13 |
| Lisinopril | 28 | 13 |
| Metformin Hclbrand: Metformin Hcl Er | 21 | — |
| Metoprolol Tartrate | 15 | — |
Practice location
Mailing address
Additional practice locations (2)
- 2400 W Villard AveMilwaukee, WI 53209-4901Phone: (414) 527-8348Fax: (414) 527-5069
- 1121 E North AveMilwaukee, WI 53212-3515Phone: (414) 267-6502Fax: (414) 267-3892
Registry dates
- Enumerated
- 2006-04-25
- Last updated
- 2022-12-12
- Certified
- 2022-12-12
Frequently asked questions
- What is Larry Duenk's NPI number?
- Larry Duenk's National Provider Identifier (NPI) is 1649236985, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larry Duenk's specialty?
- Larry Duenk is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Larry Duenk located?
- Larry Duenk's practice location on file with NPPES is 1703 N Taylor Dr, Sheboygan, WI 53081-1933.
- What is Larry Duenk's phone number?
- The practice phone number listed in the NPPES registry for Larry Duenk is (920) 457-4438.
- Does Larry Duenk accept Medicare?
- Larry Duenk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Larry Duenk's NPI active?
- Yes — Larry Duenk's NPI (1649236985) is active in the NPPES registry as of the last update on 2022-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.