Doctor profile · Federal record
Dr. John Ludwig, M.D.
Nephrology Physician (CMS: Nephrology) · Internal Medicine Physician · Internal Medicine Physician · Pediatrics Physician · Pediatrics Physician · Chicago, IL
- NPI 1215342449
- Accepts Medicare
- 16 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
5140 N California Ave Ste 600
Chicago, IL 606253664
(708) 252-5809 - Additional location
-
1500 E Medical Center Dr
Ann Arbor, MI 48109
(734) 764-3269 - Mailing address
-
120 W 22Nd St Ste 200
Oak Brook, IL 605231563
Credentials & registration
- NPI registered
- June 2014 — 12 yrs on file
- Profile last updated
- April 12, 2022
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State licenses (2)
- Michigan #4301114038 · Illinois #125065890
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1215342449. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
596
Distinct HCPCS
9
Medicare allowed
$90,133
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 286 | 98 | $83 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 94 | 23 | $365 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 73 | 24 | $125 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 57 | 56 | $137 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 24 | 17 | $95 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 21 | 11 | $304 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 19 | 12 | $134 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 11 | 11 | $175 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $182 |
In context: peer comparison
Among 62 peers in this city , average services per provider: 104. This provider delivers 5.7× the peer median.Open Payments
Industry payments received
All-time total
$153
Transactions
4
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| CALLIDITAS THERAPEUTICS US INC. | 1 | $100.66 | |
| AstraZeneca Pharmaceuticals LP | 1 | $22.32 | |
| Lilly USA, LLC | 1 | $17.02 | |
| Aurinia Pharma U.S., Inc. | 1 | $13.36 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
91
Patients
11
Total drug cost
$17,670
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Losartan Potassium | Generic | 30 | 11 | $827 |
| Carvedilol | Generic | 19 | 0 | $249 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 19 | 0 | $16,365 |
| Lisinopril | Generic | 12 | 0 | $57 |
| Chlorthalidone | Generic | 11 | 0 | $171 |
Hospital affiliations
Frequently asked questions
What is Dr. John Ludwig's medical specialty?
Dr. John Ludwig practices Nephrology Physician in Chicago, IL.
Where does Dr. John Ludwig practice?
Dr. John Ludwig practices at 5140 N California Ave Ste 600, Chicago, IL 606253664. Office phone: 7082525809.
What is Dr. John Ludwig's NPI?
Dr. John Ludwig's National Provider Identifier (NPI) is 1215342449, issued by NPPES.
Does Dr. John Ludwig accept Medicare assignment?
Yes. Dr. John Ludwig accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Ludwig commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.