Grossweiner & Blaszak, P.C.
NPI 1194789990 · Dermatology Physician · Naperville, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grossweiner & Blaszak, P.C. is a Dermatology Physician organization in Naperville, IL (NPI 1194789990).
Provider details
- NPI number
- 1194789990
- Entity type
- Organization
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Laura Heimburger, Business Manager(630) 355-6660
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1220 Hobson Rd Ste 116Naperville, IL 60540-8137Phone: (630) 355-6660Fax: (630) 527-2856
Registry dates
- Enumerated
- 2006-04-17
- Last updated
- 2022-07-18
- Certified
- 2022-07-18
Frequently asked questions
- What is Grossweiner & Blaszak, P.C.'s NPI number?
- Grossweiner & Blaszak, P.C.'s National Provider Identifier (NPI) is 1194789990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Grossweiner & Blaszak, P.C.?
- Grossweiner & Blaszak, P.C. is classified in the NPPES registry as Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Grossweiner & Blaszak, P.C. located?
- Grossweiner & Blaszak, P.C.'s practice location on file with NPPES is 1220 Hobson Rd Ste 116, Naperville, IL 60540-8137.
- What is Grossweiner & Blaszak, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Grossweiner & Blaszak, P.C. is (630) 355-6660.
- Does Grossweiner & Blaszak, P.C. accept Medicare?
- Grossweiner & Blaszak, P.C. 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 Grossweiner & Blaszak, P.C.?
- The authorized official listed on Grossweiner & Blaszak, P.C.'s NPPES record is Laura Heimburger, Business Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Grossweiner & Blaszak, P.C.'s NPI active?
- Yes — Grossweiner & Blaszak, P.C.'s NPI (1194789990) is active in the NPPES registry as of the last update on 2022-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.