Doctor profile · Federal record

Dr. Nancy Wu, MD

Internal Medicine Physician (CMS: Internal Medicine) · Chicago, IL

  • NPI 1831295997
  • Accepts Medicare
  • 29 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
4025 N Western Ave
Chicago, IL 606183726
(773) 275-7700
fax (773) 279-6516
Additional location
1945 W Wilson Ave, Fourth Floor
Chicago, IL 606405255
(773) 769-4600
fax (773) 769-6242
Mailing address
29373 Network Pl
Chicago, IL 606731293

Credentials & registration

NPPES · NUCC
NPI registered
September 2006 — 20 yrs on file
Profile last updated
September 13, 2022
Year of graduation
1997 — 29 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Illinois #036102625

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1831295997. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
299
Distinct HCPCS
6
Medicare allowed
$26,169
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 139 95 $132
36415 Insertion of needle into vein for collection of blood sample 58 50 $8
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 41 41 $131
83036 Hemoglobin a1c level 25 19 $9
G0008 Administration of influenza virus vaccine 19 19 $31
90662 Influenza vaccine split virus, preservative free 17 17 $67

In context: peer comparison

Among 487 peers in Chicago Internal Medicine Physician, average services per provider: 168. This provider delivers 1.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,759
Patients
564
Total drug cost
$21,826
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 385 127 $5,211
Levothyroxine Sodium Generic 174 53 $2,399
Amlodipine Besylate Generic 168 56 $1,311
Lisinopril Generic 168 56 $1,252
Losartan Potassium Generic 156 53 $2,059
Metformin Hcl Generic 135 43 $1,385
Hydrochlorothiazide Generic 96 29 $735
Rosuvastatin Calcium Generic 74 26 $1,365
Metoprolol Succinate Generic 69 25 $1,745
Omeprazole Generic 65 25 $974

Frequently asked questions

Auto-generated from federal data
What is Dr. Nancy Wu's medical specialty?
Dr. Nancy Wu practices Internal Medicine Physician in Chicago, IL.
Where does Dr. Nancy Wu practice?
Dr. Nancy Wu practices at 4025 N Western Ave, Chicago, IL 606183726. Office phone: 7732757700.
What is Dr. Nancy Wu's NPI?
Dr. Nancy Wu's National Provider Identifier (NPI) is 1831295997, issued by NPPES.
Does Dr. Nancy Wu accept Medicare assignment?
Yes. Dr. Nancy Wu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Wu commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.