Dr. Eric D. Challgren, M.D.
Mohs Surgery (MOHS-Micrographic Surgery Physician)
- Medicare participating
At a glance
- Medical school
- University of Toledo College of Medicine (1998)
- Years since graduation
- 28
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 889
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1998Medical school: University of Toledo College of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
MOHS-Micrographic Surgery Physician primary
NC license 200200874 -
Dermatology Physician
NC license 200200874
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Southern Dermatology PA (55 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 889
- Services billed
- 5,492
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | 1,542 | 271 |
| Established patient office or other outpatient visit, 20-29 minutes | 904 | 659 |
| Destruction of precancer skin growth, 1 growth | 445 | 340 |
| Pathology examination of tissue using a microscope, intermediate complexity | 283 | 183 |
| Biopsy of related skin growth, first growth | 278 | 229 |
| Destruction of skin growth, 1-14 growths | 238 | 202 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | 159 | 132 |
| Established patient office or other outpatient visit, 10-19 minutes | 134 | 115 |
| Biopsy of related skin growth, each additional growth | 129 | 72 |
| New patient office or other outpatient visit, 30-44 minutes | 83 | 83 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 24 companies reported 251 payments worth $16,940 in total to this clinician.
| Consulting Fee | $9,651 |
|---|---|
| Food and Beverage | $6,236 |
| Travel and Lodging | $854 |
| Education | $198 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Genzyme Corporation Nov 8, 2025 | Consulting Fee DUPIXENT · Immunology | $8,151 |
| Janssen Scientific Affairs, LLC Jan 8, 2025 | Consulting Fee TREMFYA · Immunology | $1,500 |
| Genzyme Corporation Nov 8, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Coral Gables, FL · in-kind | $473 |
| Genzyme Corporation Nov 8, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Coral Gables, FL · in-kind | $315 |
| Janssen Biotech, Inc. Apr 21, 2025 | Education TREMFYA · Immunology · in-kind | $99.99 |
| Sun Pharmaceutical Industries Inc. Jul 16, 2025 | Education in-kind | $85.00 |
| Genzyme Corporation Nov 8, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Coral Gables, FL | $65.93 |
| Janssen Pharmaceuticals, Inc Dec 4, 2025 | Education TREMFYA · Immunology · in-kind | $13.17 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.