William Gross, MD, PHD
NPI 1548552342 · Anesthesiology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Gross, MD, PHD is a Anesthesiology Physician provider in Milwaukee, WI (NPI 1548552342).
Provider details
- NPI number
- 1548552342
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 57-022072 (OH)
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
15 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
- 2011-05-11
- Last updated
- 2018-06-26
Frequently asked questions
- What is William Gross's NPI number?
- William Gross's National Provider Identifier (NPI) is 1548552342, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Gross's specialty?
- William Gross is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Gross located?
- William Gross's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226.
- What is William Gross's phone number?
- The practice phone number listed in the NPPES registry for William Gross is (414) 805-3000.
- Does William Gross accept Medicare?
- William Gross is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Gross's NPI active?
- Yes — William Gross's NPI (1548552342) is active in the NPPES registry as of the last update on 2018-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.