Doctor profile · Federal record
Dr. John Madigan, D.O.
Nephrology Physician (CMS: Nephrology) · Millburn, NJ
- NPI 1427239854
- Accepts Medicare
- 23 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
225 Millburn Ave, Suite 209
Millburn, NJ 070411737
(973) 926-7000
Credentials & registration
- NPI registered
- November 2007 — 19 yrs on file
- Profile last updated
- March 1, 2016
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- New Jersey #25MBO8268200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427239854. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,296
Distinct HCPCS
8
Medicare allowed
$236,648
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 460 | 80 | $85 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 253 | 45 | $373 | |
90935 |
Hemodialysis procedure with physician evaluation | 191 | 38 | $76 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 101 | 32 | $316 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 92 | 73 | $140 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 87 | 45 | $123 | |
90966 |
Home dialysis services per month (20 years or older) | 86 | 21 | $313 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 26 | 26 | $241 |
In context: peer comparison
Among 1 peers in Millburn Nephrology Physician, average services per provider: 162. This provider delivers 8.0× the peer median.Open Payments
Industry payments received
All-time total
$785
Transactions
24
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ardelyx, INC. | 4 | $168.95 | |
| Amgen INC. | 2 | $138.89 | |
| Pharmacosmos Therapeutics INC. | 1 | $108.53 | |
| Abbvie INC. | 1 | $104.37 | |
| AstraZeneca Pharmaceuticals Lp | 6 | $95.18 | |
| Bayer Healthcare Pharmaceuticals INC. | 3 | $53.25 | |
| Vifor Pharma, INC. | 3 | $43.83 | |
| Akebia Therapeutics INC | 2 | $38.06 | |
| Calliditas Therapeutics US INC. | 2 | $34.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
557
Patients
193
Total drug cost
$198,349
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 52 | 19 | $508 |
| Calcium Acetate | Generic | 49 | 20 | $6,894 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 49 | 13 | $34,148 |
| Furosemide | Generic | 47 | 19 | $328 |
| Losartan Potassium | Generic | 46 | 19 | $596 |
| Sevelamer Carbonate | Generic | 45 | 19 | $17,780 |
| Hydralazine Hcl | Generic | 42 | 20 | $1,146 |
| Atorvastatin Calcium | Generic | 36 | 11 | $332 |
| Allopurinol | Generic | 35 | 14 | $663 |
| Veltassa (Patiromer Calcium Sorbitex) | Brand | 33 | 14 | $33,890 |
Hospital affiliations
Frequently asked questions
What is Dr. John Madigan's medical specialty?
Dr. John Madigan practices Nephrology Physician in Millburn, NJ.
Where does Dr. John Madigan practice?
Dr. John Madigan practices at 225 Millburn Ave, Millburn, NJ 070411737. Office phone: 9739267000.
What is Dr. John Madigan's NPI?
Dr. John Madigan's National Provider Identifier (NPI) is 1427239854, issued by NPPES.
Does Dr. John Madigan accept Medicare assignment?
Yes. Dr. John Madigan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Madigan 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); Hemodialysis procedure with physician evaluation (HCPCS 90935). Source: CMS Medicare Physician & Other Practitioners file.