DR. MARK ALLAN BERK (M.D.) – Dermatology Physician, NPI 1235196858
Dermatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
703 DERMATOLOGY in IL
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Provider Addresses for DR. MARK ALLAN BERK (M.D.)
900, North Westmoreland Road, Deerpath, Lake Forest, Lake County, Illinois, 60045, United States
SUITE 222
LAKE FOREST, IL 600451674
Phone: (847) 234-6121
Fax: (847) 482-0363
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 32 Open Payments records for all available years, with a total value of $1,140.
Total Amount is formed as General ($1,140) + Research ($0) + Ownership ($0) = $1,140.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: Merz North America, Inc. ($323).
Total Amount
$1,140
General + Research + Ownership
Payments
32
Total payment records
General Amount
$1,140
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merz North America, Inc. | $323 |
| Janssen Biotech, Inc. | $300 |
| Amgen Inc. | $150 |
| Journey Medical Corporation | $142 |
| ABBVIE INC. | $110 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-10-11
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20041011000073 | I | Dermatology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 1,679 | 1,093 | $0 |
| 17003 | Destruction of precancer skin growth, 2-14 growths | 1,212 | 278 | $0 |
| 17110 | Destruction of skin growth, 1-14 growths | 677 | 513 | $0 |
| 17000 | Destruction of precancer skin growth, 1 growth | 633 | 455 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 354 | 253 | $0 |
Insurance plans in this area (ZIP 60045)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| D E R M A T O L O G Y | IL | |
| Physician Assistant | IL | |
| D E R M A T O L O G Y | CA | |
| D E R M A T O L O G Y | IL | |
| D E R M A T O L O G Y | FL | |
| D E R M A T O L O G Y | IL | |
| Physician Assistant | NC | |
| Physician Assistant | IL | |
| D E R M A T O L O G Y | IA | |
| Physician Assistant | NY |
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