Dr. James Benjamin Grossweiner , MD
Dermatology • Naperville, IL
1220 Hobson Rd Ste 116
Naperville, IL 605408137
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on April 19, 2006; this date does not establish years in practice.
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Published CMS data list 2,480 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 17003 — Destruction of precancer skin growth, 2-14 growths: 622 service units.
- 99212 — Established patient outpatient office visit: 402 service units.
- 99213 — Established patient outpatient office visit: 314 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 15 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 619 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Triamcinolone Acetonide — 72 prescription fills, including refills.
- Mometasone Furoate — 56 prescription fills, including refills.
- Fluocinonide — 45 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 21 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 60% of clinicians listed under Dermatology in Naperville, IL (2024, 15 clinicians with data). Median for this group: 2,025. Middle half: 1,099 to 2,738.
Close to the middle for Medicare Part B services among clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: 2,033. Middle half: 899 to 4,119.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,556 in 2020 to 2,480 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1220 Hobson Rd Ste 116
Naperville, IL 605408137
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
R Franklin University Of Med & Sci/chicago Medical School
1985
What Public CMS Data Show
Dermatology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
480 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $173,462 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $123,000 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
693 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$15,494 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2023
All general payments: $45.81 across 3 records.
By nature of payment
- Education: $45.81 across 3 records.
Reporting-company totals
- Pfizer Inc.: $45.81 across 3 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2023 (published June 30, 2026).
Years since graduation
41 years (graduated 1985)
CMS Doctors and Clinicians data list 1985 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Grossweiner has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Grossweiner as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Naperville and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 60% of clinicians listed under Dermatology in Naperville, IL (2024, 15 clinicians with data). Median for this group: 2,025. Middle half: 1,099 to 2,738.
Close to the middle for clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: 2,033. Middle half: 899 to 4,119.
Medicare-allowed amount
A higher Medicare-allowed amount than 60% of clinicians listed under Dermatology in Naperville, IL (2024, 15 clinicians with data). Median for this group: $169,085. Middle half: $65,215 to $221,689.
Close to the middle for clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: $141,868. Middle half: $64,155 to $281,967.
Paid by Medicare
Close to the middle for clinicians listed under Dermatology in Naperville, IL (2024, 15 clinicians with data). Median for this group: $115,994. Middle half: $45,455 to $155,168.
Close to the middle for clinicians listed under Dermatology in Illinois (2024, 405 clinicians with data). Median for this group: $99,602. Middle half: $44,437 to $204,261.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Dermatology in Naperville, IL (2024, 16 clinicians with data). Median for this group: 586. Middle half: 330 to 867.
More Part D prescriptions than 60% of clinicians listed under Dermatology in Illinois (2024, 468 clinicians with data). Median for this group: 471. Middle half: 165 to 904.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Dermatology in Naperville, IL (2024, 16 clinicians with data). Median for this group: $88,514. Middle half: $10,268 to $227,377.
A lower Part D drug cost than 60% of clinicians listed under Dermatology in Illinois (2024, 468 clinicians with data). Median for this group: $69,576. Middle half: $5,709 to $275,598.
18 active clinicians are listed under Dermatology with a practice address in Naperville, IL (647 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Naperville
16.7% of these 18 clinicians have the CMS telehealth indicator.
88.9% of these 18 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services stayed about the same: 2,556 in 2020 and 2,480 in 2024.
- 2020: 2,556
- 2021: 3,045
- 2022: 2,996
- 2023: 3,174
- 2024: 2,480
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $173,979 in 2020 and $173,462 in 2024.
- 2020: $173,979
- 2021: $225,061
- 2022: $205,203
- 2023: $214,654
- 2024: $173,462
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Paid by Medicare
Paid by Medicare varied from year to year: $125,025 in 2020 and $123,000 in 2024.
- 2020: $125,025
- 2021: $162,021
- 2022: $147,487
- 2023: $153,716
- 2024: $123,000
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 635 in 2020 and 619 in 2024.
- 2020: 635
- 2021: 723
- 2022: 746
- 2023: 733
- 2024: 619
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30-day fills
30-day fills stayed about the same: 697 in 2020 and 693 in 2024.
- 2020: 697
- 2021: 780
- 2022: 838
- 2023: 821
- 2024: 693
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Part D drug cost
Part D drug cost decreased 50% from $30,782 in 2020 to $15,494 in 2024.
- 2020: $30,782
- 2021: $62,241
- 2022: $69,909
- 2023: $73,040
- 2024: $15,494
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2023 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $45.81.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Education
In-kind items and services
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CIBINQO | General | $15.27 |
| Pfizer Inc. |
Education
In-kind items and services
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CIBINQO | General | $15.27 |
| Pfizer Inc. |
Education
In-kind items and services
|
CIBINQO | General | $15.27 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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17003
Destruction of precancer skin growth, 2-14 growths
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622 | 114 | $50.00 | $7.01 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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402 | 284 | $100.00 | $60.25 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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314 | 230 | $125.00 | $96.48 |
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11102
Biopsy of related skin growth, first growth
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295 | 236 | $175.00 | $101.23 |
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17000
Destruction of precancer skin growth, 1 growth
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265 | 189 | $175.00 | $53.61 |
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11103
Biopsy of related skin growth, each additional growth
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181 | 125 | $100.00 | $53.62 |
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11104
Punch biopsy, first skin growth
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141 | 125 | $180.00 | $130.56 |
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17110
Destruction of skin growth, 1-14 growths
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56 | 48 | $175.00 | $109.76 |
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12032
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
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55 | 52 | $460.00 | $316.34 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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46 | 37 | $150.00 | $136.47 |
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11602
Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm
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42 | 41 | $425.00 | $130.79 |
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11105
Punch biopsy, each additional skin growth
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19 | 16 | $90.00 | $63.88 |
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17004
Destruction of precancer skin growth, 15 or more growths
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19 | 15 | $300.00 | $179.19 |
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11622
Removal of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm
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12 | 11 | $470.00 | $135.65 |
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99202
New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more
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11 | 11 | $140.00 | $76.40 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Triamcinolone Acetonide | Triamcinolone Acetonide | 72 | 1,805 | $500.27 | 55 |
| Mometasone Furoate | Mometasone Furoate | 56 | 1,349 | $1,253.76 | 43 |
| Fluocinonide | Fluocinonide | 45 | 1,406 | $2,569.09 | 24 |
| Metronidazole | Metronidazole | 44 | 1,040 | $1,681.83 | 24 |
| Clindamycin Phosphate | Clindamycin Phosphate | 44 | 1,360 | $691.76 | 27 |
| Desonide | Desonide | 44 | 984 | $2,243.51 | 33 |
| Clotrimazole | Clotrimazole | 37 | 786 | $450.45 | 23 |
| Mupirocin | Mupirocin | 37 | 553 | $245.86 | 32 |
| Doxycycline Hyclate | Doxycycline Hyclate | 30 | 1,111 | $561.60 | 12 |
| Econazole Nitrate | Econazole Nitrate | 27 | 746 | $441.66 | 20 |
| Fluticasone Propionate | Fluticasone Propionate | 26 | 1,020 | $810.27 | 13 |
| Hydrocortisone | Hydrocortisone | 23 | 822 | $135.75 | — |
| Cephalexin | Cephalexin | 22 | 47 | $19.89 | 14 |
| Ammonium Lactate | Ammonium Lactate | 21 | 630 | $443.03 | 15 |
| Alclometasone Dipropionate | Alclometasone Dipropionate | 21 | 797 | $709.57 | 17 |
| Ketoconazole | Ketoconazole | 13 | 315 | $120.41 | — |
| Prednisone | Prednisone | 12 | 340 | $68.26 | — |
| Betamethasone Dipropionate | Betamethasone Dipropionate | 12 | 595 | $1,581.93 | — |
| Clobetasol Propionate | Clobetasol Propionate | 11 | 234 | $365.07 | — |
| Acyclovir | Acyclovir | 11 | 275 | $109.32 | — |
| Fluocinolone Acetonide | Fluocinolone Acetonide | 11 | 290 | $490.78 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-07-18NUCC Taxonomy Code: 207N00000X
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSORDER AND REFERRING ONLY - DERMATOLOGY
I20260511003660
IL
3678761673
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dermatology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1220 HOBSON RD STE 116, NAPERVILLE, IL 605408137 (Tel: 6303556660)
Registered at 1220 HOBSON RD STE 116, NAPERVILLE, IL 605408137 (Tel: 6303556660)
Dermatology (license number reported to NPPES: IL 036-074040)
NPI status registered as active in NPPES database
Registered at 120 SPALDING DR, SUITE 405, NAPERVILLE, IL 605406508 (Tel: 6303556660)
Registered at 120 SPALDING DR, SUITE 405, NAPERVILLE, IL 605406508 (Tel: 6303556660)
Recorded as JAMES GROSSWEINER, M.D.
Dermatology
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dermatology Specialists in Naperville
- Dr. Anthony Janiga, MD
- Dr. June Park, MD
- Dr. Shraddha Desai, MD
- Dr. Andia Renz, MD
- Dr. Shruthi Reddy, MD
- Dr. Kelly Stankiewicz, MD
Mailing Address
1220 Hobson Rd Ste 116
Naperville, IL 605408137
Phone: 6303556660