Doctor profile · Federal record

Dr. Eileen Chang, D.O.

Family Medicine Physician (CMS: Family Practice) · Family Medicine Physician · Preventive Medicine/Occupational Environmental Medicine Physician · Chandler, AZ

  • NPI 1063529196
  • Accepts Medicare
  • 27 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1455 W Chandler Blvd Ste A4
Chandler, AZ 852246197
(480) 899-2900

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
March 18, 2024
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State licenses (2)
Arizona #4612 · Illinois #036-107044

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1063529196. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
722
Distinct HCPCS
6
Medicare allowed
$79,269
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 393 204 $124
99213 Established patient office or other outpatient visit, 20-29 minutes 139 100 $88
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 90 90 $125
99497 Advance care planning, first 30 minutes 72 71 $80
99212 Established patient office or other outpatient visit, 10-19 minutes 16 16 $55
69210 Removal of impacted ear wax 12 11 $44

In context: peer comparison

Among 43 peers in Chandler Family Medicine Physician, average services per provider: 124. This provider delivers 5.8× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,085
Transactions
50
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Lilly USA, LLC 9 $144.25
AstraZeneca Pharmaceuticals Lp 5 $140.08
Novo Nordisk INC 6 $93.57
Exact Sciences Corporation 4 $66.67
Pfizer INC. 4 $65.45
Abbvie INC. 4 $63.70
Boehringer Ingelheim Pharmaceuticals, INC. 3 $61.59
Amgen INC. 3 $54.03
GlaxoSmithKline, LLC. 3 $51.30
Corcept Therapeutics 2 $44.52
Merck Sharp & Dohme LLC 2 $40.50
Novartis Pharmaceuticals Corporation 2 $29.78
Boston Scientific Corporation 1 $29.40
Gilead Sciences, INC. 1 $28.83
Abbott Laboratories 1 $23.34

By nature of payment

Food and Beverage
$1,085

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,265
Patients
768
Total drug cost
$30,639
Drug Type Claims Patients Total cost
Rosuvastatin Calcium Generic 335 119 $6,558
Amlodipine Besylate Generic 260 82 $1,964
Atorvastatin Calcium Generic 243 86 $3,042
Levothyroxine Sodium Generic 228 77 $3,929
Losartan Potassium Generic 178 65 $2,602
Lisinopril Generic 167 54 $1,514
Metformin Hcl Generic 123 48 $1,348
Hydrochlorothiazide Generic 113 39 $616
Alprazolam Generic 103 21 $625
Pantoprazole Sodium Generic 103 36 $1,929

Frequently asked questions

Auto-generated from federal data
What is Dr. Eileen Chang's medical specialty?
Dr. Eileen Chang practices Family Medicine Physician in Chandler, AZ.
Where does Dr. Eileen Chang practice?
Dr. Eileen Chang practices at 1455 W Chandler Blvd Ste A4, Chandler, AZ 852246197. Office phone: 4808992900.
What is Dr. Eileen Chang's NPI?
Dr. Eileen Chang's National Provider Identifier (NPI) is 1063529196, issued by NPPES.
Does Dr. Eileen Chang accept Medicare assignment?
Yes. Dr. Eileen Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Eileen Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.