Niraj Nijhawan, MD
NPI 1255448619 · Anesthesiology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Niraj Nijhawan, MD is a Anesthesiology Physician provider in Milwaukee, WI (NPI 1255448619).
Provider details
- NPI number
- 1255448619
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36030 (WI)
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
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
Registry dates
- Enumerated
- 2006-08-23
- Last updated
- 2025-02-27
- Certified
- 2025-02-27
Frequently asked questions
- What is Niraj Nijhawan's NPI number?
- Niraj Nijhawan's National Provider Identifier (NPI) is 1255448619, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Niraj Nijhawan's specialty?
- Niraj Nijhawan is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Niraj Nijhawan located?
- Niraj Nijhawan's practice location on file with NPPES is 945 N 12th St, Milwaukee, WI 53233.
- What is Niraj Nijhawan's phone number?
- The practice phone number listed in the NPPES registry for Niraj Nijhawan is (414) 750-4646.
- Does Niraj Nijhawan accept Medicare?
- Niraj Nijhawan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Niraj Nijhawan's NPI active?
- Yes — Niraj Nijhawan's NPI (1255448619) is active in the NPPES registry as of the last update on 2025-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.