Doctor profile · Federal record

Dr. Mark Mohapp, LCSW, CSAC

Clinical Social Worker · Addiction (Substance Use Disorder) Counselor · Clinical Social Worker · Addiction (Substance Use Disorder) Counselor · Addiction (Substance Use Disorder) Counselor · Lake Geneva, WI

  • NPI 1861487647
  • 21 yrs on file
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1271 Wisconsin St, B
Lake Geneva, WI 531471748
(262) 215-0826

Credentials & registration

NPPES · NUCC
NPI registered
September 2005 — 21 yrs on file
Profile last updated
March 13, 2013
Specialty taxonomy
1041C0700X — NUCC code
State licenses (5)
Wisconsin #116-123 · Wisconsin #2019 · Illinois #149.004395 · Wisconsin #2019-132 · Wisconsin #7099-135
Medicaid
WI #39269100

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1861487647. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
85
Distinct HCPCS
1
Medicare allowed
$6,126
HCPCS Description Services Patients Avg allowed
90834 Psychotherapy, 45 minutes 85 18 $72

In context: peer comparison

Among 1 peers in this city , average services per provider: 85. This provider delivers 1.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Mohapp's medical specialty?
Dr. Mark Mohapp practices Clinical Social Worker in Lake Geneva, WI.
Where does Dr. Mark Mohapp practice?
Dr. Mark Mohapp practices at 1271 Wisconsin St, Lake Geneva, WI 531471748. Office phone: 2622150826.
What is Dr. Mark Mohapp's NPI?
Dr. Mark Mohapp's National Provider Identifier (NPI) is 1861487647, issued by NPPES.
What procedures does Dr. Mark Mohapp commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.