Siamak Arassi, MD
NPI 1083680417 · Addiction Medicine (Internal Medicine) Physician · Brookfield, WI
Siamak Arassi, MD is a Addiction Medicine (Internal Medicine) Physician provider in Brookfield, WI (NPI 1083680417).
Provider details
- NPI number
- 1083680417
- Entity type
- Individual
- Primary specialty
- Addiction Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 41661-21 (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 tenure38% of score
20 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
Registry dates
- Enumerated
- 2006-02-26
- Last updated
- 2018-08-22
Frequently asked questions
- What is Siamak Arassi's NPI number?
- Siamak Arassi's National Provider Identifier (NPI) is 1083680417, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siamak Arassi's specialty?
- Siamak Arassi is listed in the NPPES registry with a primary specialty of Addiction Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Siamak Arassi located?
- Siamak Arassi's practice location on file with NPPES is 19115 W Capitol Dr, Brookfield, WI 53045.
- What is Siamak Arassi's phone number?
- The practice phone number listed in the NPPES registry for Siamak Arassi is (262) 781-0240.
- Is Siamak Arassi's NPI active?
- Yes — Siamak Arassi's NPI (1083680417) is active in the NPPES registry as of the last update on 2018-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.