Doctor profile · Federal record

Dr. Len Lee, D.O.

Emergency Medicine Physician (CMS: Emergency Medicine) · Barrington, IL

  • NPI 1598818395
  • Accepts Medicare
  • 36 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
450 W Highway 22
Barrington, IL 600101919
(847) 381-9600
Mailing address
Po Box 98
Barrington, IL 600100098

Credentials & registration

NPPES · NUCC
NPI registered
January 2007 — 19 yrs on file
Profile last updated
October 15, 2010
Year of graduation
1990 — 36 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Illinois #036089274

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1598818395. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
473
Distinct HCPCS
4
Medicare allowed
$78,508
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 281 276 $187
99284 Emergency department visit with moderate level of medical decision making 139 136 $127
99291 Critical care, first 30-74 minutes 29 28 $223
99283 Emergency department visit with low level of medical decision making 24 24 $76

In context: peer comparison

Among 9 peers in Barrington Emergency Medicine Physician, average services per provider: 182. This provider delivers 2.6× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
12
Patients
12
Total drug cost
$40
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 12 12 $40

Frequently asked questions

Auto-generated from federal data
What is Dr. Len Lee's medical specialty?
Dr. Len Lee practices Emergency Medicine Physician in Barrington, IL.
Where does Dr. Len Lee practice?
Dr. Len Lee practices at 450 W Highway 22, Barrington, IL 600101919. Office phone: 8473819600.
What is Dr. Len Lee's NPI?
Dr. Len Lee's National Provider Identifier (NPI) is 1598818395, issued by NPPES.
Does Dr. Len Lee accept Medicare assignment?
Yes. Dr. Len Lee accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Len Lee commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.