Dermatology Associates of Siouxland, PC
NPI 1417088907 · Specialist · Sioux City, IA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dermatology Associates of Siouxland, PC is a Specialist organization in Sioux City, IA (NPI 1417088907).
Provider details
- NPI number
- 1417088907
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- J. Mark Demay, Dermatologist(712) 277-9370
- License
- 31906 (IA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Other names (DBA / former)
- Former legal business name
- Drs. Rossiter & Demay, LLP
Registry dates
- Enumerated
- 2007-03-08
- Last updated
- 2016-08-17
Frequently asked questions
- What is Dermatology Associates of Siouxland, PC's NPI number?
- Dermatology Associates of Siouxland, PC's National Provider Identifier (NPI) is 1417088907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dermatology Associates of Siouxland, PC?
- Dermatology Associates of Siouxland, PC is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Dermatology Associates of Siouxland, PC located?
- Dermatology Associates of Siouxland, PC's practice location on file with NPPES is 2930 Hamilton Blvd, Sioux City, IA 51104-2425.
- What is Dermatology Associates of Siouxland, PC's phone number?
- The practice phone number listed in the NPPES registry for Dermatology Associates of Siouxland, PC is (712) 277-9370.
- Does Dermatology Associates of Siouxland, PC accept Medicare?
- Dermatology Associates of Siouxland, PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Dermatology Associates of Siouxland, PC?
- The authorized official listed on Dermatology Associates of Siouxland, PC's NPPES record is J. Mark Demay, Dermatologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dermatology Associates of Siouxland, PC's NPI active?
- Yes — Dermatology Associates of Siouxland, PC's NPI (1417088907) is active in the NPPES registry as of the last update on 2016-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.