Sean Duffy, D.C.
NPI 1083682348 · Chiropractor · Appleton, WI
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Duffy, D.C. is a Chiropractor provider in Appleton, WI (NPI 1083682348).
Provider details
- NPI number
- 1083682348
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 3260 (WI)
Specialties & taxonomies
Chiropractic Providers
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
295 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) |
|---|---|---|
| Chiropractic Manipulative Treatment, 3-4 Spinal Regions98941 | 222 | $38 |
| Chiropractic Manipulative Treatment, 1-2 Spinal Regions98940 | 73 | $26 |
Typical Medicare-allowed amounts for these services range $26–$38 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-10
- Last updated
- 2010-11-16
Frequently asked questions
- What is Sean Duffy's NPI number?
- Sean Duffy's National Provider Identifier (NPI) is 1083682348, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Duffy's specialty?
- Sean Duffy is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Sean Duffy located?
- Sean Duffy's practice location on file with NPPES is 811 N Lynndale Dr, Appleton, WI 54914-3085.
- What is Sean Duffy's phone number?
- The practice phone number listed in the NPPES registry for Sean Duffy is (920) 733-9330.
- Does Sean Duffy accept Medicare?
- Sean Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Duffy's NPI active?
- Yes — Sean Duffy's NPI (1083682348) is active in the NPPES registry as of the last update on 2010-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.