Chestnut Medicine of Wi Ltd
NPI 1043805930 · Internal Medicine Physician · Waukesha, WI
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chestnut Medicine of Wi Ltd is a Internal Medicine Physician organization in Waukesha, WI (NPI 1043805930).
Provider details
- NPI number
- 1043805930
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Omair Siraj, Ceo(703) 964-8199
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
- 2021-03-03
- Last updated
- 2022-05-27
- Certified
- 2022-05-27
Frequently asked questions
- What is Chestnut Medicine of Wi Ltd's NPI number?
- Chestnut Medicine of Wi Ltd's National Provider Identifier (NPI) is 1043805930, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Chestnut Medicine of Wi Ltd?
- Chestnut Medicine of Wi Ltd is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chestnut Medicine of Wi Ltd located?
- Chestnut Medicine of Wi Ltd's practice location on file with NPPES is 1451 Cleveland Ave, Waukesha, WI 53186-3876.
- What is Chestnut Medicine of Wi Ltd's phone number?
- The practice phone number listed in the NPPES registry for Chestnut Medicine of Wi Ltd is (262) 547-2123.
- Does Chestnut Medicine of Wi Ltd accept Medicare?
- Chestnut Medicine of Wi Ltd 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 Chestnut Medicine of Wi Ltd?
- The authorized official listed on Chestnut Medicine of Wi Ltd's NPPES record is Omair Siraj, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Chestnut Medicine of Wi Ltd's NPI active?
- Yes — Chestnut Medicine of Wi Ltd's NPI (1043805930) is active in the NPPES registry as of the last update on 2022-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.