Doctor profile · Federal record
Dr. Nicholas Maassen
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Chicago, IL
- NPI 1477718302
- Accepts Medicare
- MIPS 87.7 / 100 · 2023
- 18 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5841 S Maryland Ave
Chicago, IL 606371443
(888) 824-0200 - Mailing address
-
150 Harvester Dr, Suite 300
Burr Ridge, IL 605275919
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- October 24, 2022
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State license (1)
- Illinois #036152536
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477718302. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
506
Distinct HCPCS
10
Medicare allowed
$42,984
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 93 | 61 | $70 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 86 | 25 | $1 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 58 | 48 | $104 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 51 | 51 | $143 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 42 | 35 | $136 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 37 | 37 | $90 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 37 | 27 | $96 | |
20610 |
Aspiration and/or injection of fluid from large joint | 30 | 25 | $72 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 27 | 27 | $168 | |
20610 |
Aspiration and/or injection of fluid from large joint | 25 | 24 | $53 |
In context: peer comparison
Among 32 peers in Chicago Orthopaedic Surgery Physician, average services per provider: 90. This provider delivers 5.6× the peer median.Open Payments
Industry payments received
All-time total
$1,222
Transactions
9
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Restor3D, INC. | 6 | $1,021.65 | |
| Exactech, INC. | 1 | $154.74 | |
| Stryker Corporation | 1 | $29.74 | |
| Medical Device Business Services, INC. | 1 | $16.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
99
Patients
37
Total drug cost
$362
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Meloxicam | Generic | 86 | 37 | $290 |
| Naproxen | Generic | 13 | 0 | $72 |
Frequently asked questions
What is Dr. Nicholas Maassen's medical specialty?
Dr. Nicholas Maassen practices Orthopaedic Surgery Physician in Chicago, IL.
Where does Dr. Nicholas Maassen practice?
Dr. Nicholas Maassen practices at 5841 S Maryland Ave, Chicago, IL 606371443. Office phone: 8888240200.
What is Dr. Nicholas Maassen's NPI?
Dr. Nicholas Maassen's National Provider Identifier (NPI) is 1477718302, issued by NPPES.
Does Dr. Nicholas Maassen accept Medicare assignment?
Yes. Dr. Nicholas Maassen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nicholas Maassen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.