Doctor profile · Federal record

Dr. William Martinez, MD

Family Medicine Physician (CMS: Family Practice) · Libertyville, IL

  • NPI 1144212382
  • Accepts Medicare
  • 40 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1870 W Winchester RD, Suite 145
Libertyville, IL 600485358
(847) 996-0700
fax (847) 996-0679

Credentials & registration

NPPES · NUCC
NPI registered
August 2005 — 21 yrs on file
Profile last updated
December 9, 2021
Year of graduation
1986 — 40 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Illinois #036099225
Medicaid
IL #036099225

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1144212382. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
305
Distinct HCPCS
6
Medicare allowed
$23,098
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 76 32 $94
99214 Established patient office or other outpatient visit, 30-39 minutes 65 38 $133
36415 Insertion of needle into vein for collection of blood sample 48 39 $8
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 45 45 $133
G0444 Annual depression screening, 5 to 15 minutes 43 43 $19
81002 Urinalysis, manual test 28 21 $3

In context: peer comparison

Among 7 peers in Libertyville Family Medicine Physician, average services per provider: 88. This provider delivers 3.5× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,283
Transactions
41
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals Lp 11 $473.21
Boehringer Ingelheim Pharmaceuticals, INC. 4 $255.50
Abbott Laboratories 3 $175.45
Lilly USA, LLC 13 $160.64
Novo Nordisk INC 4 $101.29
Pfizer INC. 4 $85.64
Ardelyx, INC. 1 $17.67
Kowa Pharmaceuticals America, INC. 1 $13.12

By nature of payment

Food and Beverage
$1,283

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
855
Patients
264
Total drug cost
$10,937
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 103 31 $1,491
Losartan Potassium Generic 71 21 $963
Metformin Hcl Generic 70 19 $684
Metformin Hcl ER (Metformin Hcl) Brand 67 20 $766
Pravastatin Sodium Generic 62 19 $1,410
Levothyroxine Sodium Generic 61 15 $759
Amlodipine Besylate Generic 60 19 $788
Lisinopril Generic 59 17 $363
Lorazepam Generic 53 12 $396
Carvedilol Generic 52 14 $610

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. William Martinez's medical specialty?
Dr. William Martinez practices Family Medicine Physician in Libertyville, IL.
Where does Dr. William Martinez practice?
Dr. William Martinez practices at 1870 W Winchester RD, Libertyville, IL 600485358. Office phone: 8479960700.
What is Dr. William Martinez's NPI?
Dr. William Martinez's National Provider Identifier (NPI) is 1144212382, issued by NPPES.
Does Dr. William Martinez accept Medicare assignment?
Yes. Dr. William Martinez accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Martinez commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.