Doctor profile · Federal record

Dr. Stephen Lamberton, MD

Family Medicine Physician (CMS: Family Practice) · Cudahy, WI

  • NPI 1558435123
  • Accepts Medicare
  • 33 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
5900 S. Lake Drive, Lakeshore Medical Clinic
Cudahy, WI 531103171
(414) 489-4190
fax (414) 489-4015
Mailing address
Po Box 735044
Chicago, IL 606735044

Credentials & registration

NPPES · NUCC
NPI registered
November 2006 — 20 yrs on file
Profile last updated
October 2, 2023
Year of graduation
1993 — 33 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Wisconsin #36983
Medicaid
WI #32201900

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1558435123. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
960
Distinct HCPCS
10
Medicare allowed
$79,439
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 405 152 $117
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 116 116 $116
93793 Anticoagulant management of patient taking warfarin 90 25 $11
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg 88 11 $1
G0008 Administration of influenza virus vaccine 50 49 $29
90662 Influenza vaccine split virus, preservative free 47 46 $72
99213 Established patient office or other outpatient visit, 20-29 minutes 43 32 $83
85610 Blood test, clotting time 40 15 $4
99495 Transitional care management services for problem of at least moderate complexity 22 18 $184
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and 19 14 $49

In context: peer comparison

Among 6 peers in Cudahy Family Medicine Physician, average services per provider: 74. This provider delivers 13× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,228
Patients
728
Total drug cost
$46,103
Drug Type Claims Patients Total cost
Levothyroxine Sodium Generic 314 73 $6,834
Losartan Potassium Generic 289 65 $4,577
Pantoprazole Sodium Generic 273 53 $4,764
Gabapentin Generic 266 46 $4,149
Amlodipine Besylate Generic 264 62 $1,769
Atorvastatin Calcium Generic 240 56 $2,995
Potassium Chloride Generic 204 48 $6,442
Metoprolol Tartrate Generic 198 40 $1,606
Furosemide Generic 194 50 $1,391
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 189 36 $3,158

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Stephen Lamberton's medical specialty?
Dr. Stephen Lamberton practices Family Medicine Physician in Cudahy, WI.
Where does Dr. Stephen Lamberton practice?
Dr. Stephen Lamberton practices at 5900 S. Lake Drive, Cudahy, WI 531103171. Office phone: 4144894190.
What is Dr. Stephen Lamberton's NPI?
Dr. Stephen Lamberton's National Provider Identifier (NPI) is 1558435123, issued by NPPES.
Does Dr. Stephen Lamberton accept Medicare assignment?
Yes. Dr. Stephen Lamberton accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Lamberton commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Anticoagulant management of patient taking warfarin (HCPCS 93793). Source: CMS Medicare Physician & Other Practitioners file.