Sidney Grossberg, M.D.
NPI 1114110335 · Internal Medicine Physician · Milwaukee, WI
Sidney Grossberg, M.D. is a Internal Medicine Physician provider in Milwaukee, WI (NPI 1114110335).
Provider details
- NPI number
- 1114110335
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- WI-15815-020 (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
18 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
- 2007-08-21
- Last updated
- 2007-08-21
Frequently asked questions
- What is Sidney Grossberg's NPI number?
- Sidney Grossberg's National Provider Identifier (NPI) is 1114110335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sidney Grossberg's specialty?
- Sidney Grossberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sidney Grossberg located?
- Sidney Grossberg's practice location on file with NPPES is 8701 W Watertown Plank Rd # Ccn2542, Milwaukee, WI 53226-3548.
- What is Sidney Grossberg's phone number?
- The practice phone number listed in the NPPES registry for Sidney Grossberg is (414) 456-8105.
- Is Sidney Grossberg's NPI active?
- Yes — Sidney Grossberg's NPI (1114110335) is active in the NPPES registry as of the last update on 2007-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.