Doctor profile · Federal record
Dr. Vivian Chou, MD
Allergy & Immunology Physician (CMS: Allergy/Immunology) · Evanston, IL
- NPI 1457573420
- Accepts Medicare
- 24 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
2500 Ridge Ave, Suite 211A
Evanston, IL 602012455
(847) 328-7909
fax (847) 328-7919
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- December 6, 2021
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207K00000X — NUCC code
- State license (1)
- Illinois #036114020
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457573420. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
49
Distinct HCPCS
2
Medicare allowed
$5,166
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 27 | 21 | $94 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 22 | 22 | $119 |
In context: peer comparison
Among 2 peers in Evanston Allergy & Immunology Physician, average services per provider: 33. This provider delivers 1.5× the peer median.Open Payments
Industry payments received
All-time total
$2,242
Transactions
85
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 20 | $466.71 | |
| Genzyme Corporation | 11 | $303.72 | |
| Regeneron Healthcare Solutions, INC. | 8 | $227.47 | |
| GlaxoSmithKline, LLC. | 10 | $225.26 | |
| Octapharma USA, INC. | 2 | $130.04 | |
| Csl Behring | 5 | $124.44 | |
| Hikma Pharmaceuticals USA | 5 | $93.40 | |
| Genentech USA, INC. | 4 | $87.74 | |
| Hospira, INC. | 4 | $83.37 | |
| Kaleo, INC. | 4 | $72.94 | |
| Pfizer INC. | 3 | $72.84 | |
| BioCryst US Sales Co., LLC | 3 | $69.37 | |
| Takeda Pharmaceuticals U.S.A., INC. | 2 | $46.97 | |
| Pharming Healthcare, INC. | 2 | $46.47 | |
| Leo Pharma INC. | 2 | $45.24 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
162
Patients
59
Total drug cost
$5,921
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azelastine Hcl | Generic | 52 | 24 | $2,737 |
| Montelukast Sodium | Generic | 46 | 22 | $953 |
| Fluticasone Propionate | Generic | 22 | 13 | $590 |
| Cyproheptadine Hcl | Generic | 16 | 0 | $235 |
| Ventolin Hfa (Albuterol Sulfate) | Brand | 14 | 0 | $887 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 12 | 0 | $519 |
Hospital affiliations
Frequently asked questions
What is Dr. Vivian Chou's medical specialty?
Dr. Vivian Chou practices Allergy & Immunology Physician in Evanston, IL.
Where does Dr. Vivian Chou practice?
Dr. Vivian Chou practices at 2500 Ridge Ave, Evanston, IL 602012455. Office phone: 8473287909.
What is Dr. Vivian Chou's NPI?
Dr. Vivian Chou's National Provider Identifier (NPI) is 1457573420, issued by NPPES.
Does Dr. Vivian Chou accept Medicare assignment?
Yes. Dr. Vivian Chou accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Vivian Chou commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.