Doctor profile · Federal record
Dr. Zhengjin Cao, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Dubuque, IA
- NPI 1861616039
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1515 Delhi St, Ste 100
Dubuque, IA 520016320
(563) 557-9111
fax (563) 589-4046
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- April 6, 2021
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Iowa #37147
- Medicaid
- WI #34793200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861616039. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
5,614
Distinct HCPCS
10
Medicare allowed
$231,006
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 648 | 343 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 559 | 324 | $118 | |
80048 |
Blood test, basic group of blood chemicals (calcium, total) | 492 | 336 | $8 | |
84460 |
Liver enzyme (sgpt), level | 406 | 300 | $5 | |
83036 |
Hemoglobin a1c level | 275 | 207 | $10 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 254 | 208 | $16 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 247 | 247 | $120 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 239 | 234 | $13 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 233 | 233 | $17 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 192 | 148 | $84 |
In context: peer comparison
Among 8 peers in this city , average services per provider: 86. This provider delivers 65× the peer median.Open Payments
Industry payments received
All-time total
$148
Transactions
9
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 2 | $32.28 | |
| PFIZER INC. | 1 | $19.96 | |
| Novo Nordisk Inc | 1 | $18.12 | |
| Lilly USA, LLC | 1 | $16.49 | |
| ABBVIE INC. | 1 | $16.42 | |
| Bayer Healthcare Pharmaceuticals Inc. | 1 | $16.31 | |
| Amgen Inc. | 1 | $14.00 | |
| Lundbeck LLC | 1 | $13.93 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
8,074
Patients
1,863
Total drug cost
$119,052
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 1,075 | 252 | $12,859 |
| Omeprazole | Generic | 877 | 205 | $11,614 |
| Potassium Chloride | Generic | 707 | 160 | $22,127 |
| Furosemide | Generic | 659 | 147 | $4,967 |
| Losartan Potassium | Generic | 641 | 163 | $9,200 |
| Levothyroxine Sodium | Generic | 607 | 113 | $9,493 |
| Amlodipine Besylate | Generic | 558 | 149 | $4,464 |
| Atenolol | Generic | 405 | 101 | $4,031 |
| Simvastatin | Generic | 405 | 93 | $4,375 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 378 | 76 | $10,493 |
Frequently asked questions
What is Dr. Zhengjin Cao's medical specialty?
Dr. Zhengjin Cao practices Internal Medicine Physician in Dubuque, IA.
Where does Dr. Zhengjin Cao practice?
Dr. Zhengjin Cao practices at 1515 Delhi St, Dubuque, IA 520016320. Office phone: 5635579111.
What is Dr. Zhengjin Cao's NPI?
Dr. Zhengjin Cao's National Provider Identifier (NPI) is 1861616039, issued by NPPES.
Does Dr. Zhengjin Cao accept Medicare assignment?
Yes. Dr. Zhengjin Cao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zhengjin Cao commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214); Blood test, basic group of blood chemicals (calcium, total) (HCPCS 80048). Source: CMS Medicare Physician & Other Practitioners file.