Physician Profile
Unclaimed ProfileAbout GROSSWEINER
Based in Naperville, IL, James Benjamin Grossweiner, M.D. is listed in the NPI registry under dermatology. James graduated from R Franklin University of Med & Sci/Chicago Medical School in 1985.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Grossweiner specialise in?
Dr. Grossweiner is a dermatology in Naperville, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DERMATOLOGY”.
NPI registry
Where is Dr. Grossweiner located?
Dr. Grossweiner is listed at 1220 HOBSON RD STE 116, Naperville, IL 60540. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Grossweiner's phone number?
The number on file is (630) 355-6660. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Grossweiner?
Dr. Grossweiner's National Provider Identifier is 1437114907. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Grossweiner go to medical school?
Dr. Grossweiner attended R Franklin University of Med & Sci/Chicago Medical School, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Grossweiner have?
Dr. Grossweiner has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Grossweiner do most often?
According to Medicare billing data, Dr. Grossweiner performs procedures including destruction of precancer skin growth, 2-14 growths, biopsy of related skin growth, first growth and destruction of precancer skin growth, 1 growth, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Grossweiner's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grossweiner. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (630) 355-6660
- Email not available
Practice Locations
1220 HOBSON RD STE 116
Naperville, IL 60540
Procedures Most Often Billed to Medicare
2,480 services · 1,534 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
622 |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
295 |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
265 |
| Biopsy of related skin growth, each additional growth | Procedure | 11103 |
181 |
| Punch biopsy, first skin growth | Procedure | 11104 |
141 |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
56 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | Procedure | 12032 |
55 |
| Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm | Procedure | 11602 |
42 |
| Destruction of precancer skin growth, 15 or more growths | Procedure | 17004 |
19 |
| Punch biopsy, each additional skin growth | Procedure | 11105 |
19 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other dermatology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other dermatology specialists in Naperville 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at R Franklin University of Med & Sci/Chicago Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at R Franklin University of Med & Sci/Chicago Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Destruction of precancer skin growth, 2-14 growths 7
Providers in IL who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.