Doctor profile · Federal record
Dr. Patrick Litonjua, MD
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Janesville, WI
- NPI 1831297308
- Accepts Medicare
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3524 E Milwaukee St
Janesville, WI 535461626
(608) 756-7100
fax (608) 756-4700
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- September 10, 2012
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- Wisconsin #52852-020
- Medicaid
- WI #1831297308
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831297308. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
593
Distinct HCPCS
3
Medicare allowed
$52,038
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 346 | 193 | $92 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 168 | 151 | $62 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 79 | 79 | $125 |
In context: peer comparison
Among 1 peers in Janesville Endocrinology, Diabetes & Metabolism Physician, average services per provider: 197. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$101
Transactions
5
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, INC. | 2 | $47.23 | |
| Medtronic, INC. | 2 | $39.51 | |
| Abbvie INC. | 1 | $14.54 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,212
Patients
821
Total drug cost
$3,135,463
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Trulicity (Dulaglutide) | Brand | 496 | 101 | $896,726 |
| Lantus Solostar (Insulin Glargine,Hum.Rec.Anlog) | Brand | 419 | 107 | $437,530 |
| Levothyroxine Sodium | Generic | 333 | 85 | $4,928 |
| Jardiance (Empagliflozin) | Brand | 278 | 68 | $361,884 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 267 | 76 | $5,204 |
| Metformin Hcl | Generic | 219 | 64 | $2,943 |
| Ozempic (Semaglutide) | Brand | 211 | 60 | $374,331 |
| Methimazole | Generic | 168 | 40 | $2,988 |
| Novolog Flexpen (Insulin Aspart) | Brand | 147 | 37 | $188,220 |
| Humalog Kwikpen U-100 (Insulin Lispro) | Brand | 142 | 55 | $231,016 |
Frequently asked questions
What is Dr. Patrick Litonjua's medical specialty?
Dr. Patrick Litonjua practices Endocrinology, Diabetes & Metabolism Physician in Janesville, WI.
Where does Dr. Patrick Litonjua practice?
Dr. Patrick Litonjua practices at 3524 E Milwaukee St, Janesville, WI 535461626. Office phone: 6087567100.
What is Dr. Patrick Litonjua's NPI?
Dr. Patrick Litonjua's National Provider Identifier (NPI) is 1831297308, issued by NPPES.
Does Dr. Patrick Litonjua accept Medicare assignment?
Yes. Dr. Patrick Litonjua accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Patrick Litonjua 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); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.