Doctor profile · Federal record
Dr. Michael Lopker, M.D., PH.D.
Rheumatology Physician (CMS: Rheumatology) · Internal Medicine Physician · Chicago, IL
- NPI 1730535998
- Accepts Medicare
- MIPS 87.6 / 100 · 2023
- 10 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
240 E Huron St
Chicago, IL 606112909
(312) 926-2000
Credentials & registration
- NPI registered
- May 2016 — 10 yrs on file
- Profile last updated
- June 11, 2019
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State licenses (2)
- Illinois #036.149197 · Arizona #R75552
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1730535998. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
315
Distinct HCPCS
10
Medicare allowed
$33,708
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 99 | 70 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 42 | 27 | $89 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 33 | 23 | $120 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 26 | 18 | $129 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 24 | 23 | $151 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 24 | 18 | $103 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 20 | 20 | $116 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 17 | 15 | $69 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 15 | 15 | $153 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 15 | 15 | $164 |
In context: peer comparison
Among 36 peers in Chicago Rheumatology Physician, average services per provider: 1,230. This provider delivers 0.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
578
Patients
154
Total drug cost
$917,707
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 128 | 48 | $9,667 |
| Methotrexate (Methotrexate Sodium) | Brand | 89 | 32 | $2,086 |
| Allopurinol | Generic | 74 | 25 | $1,157 |
| Prednisone | Generic | 70 | 38 | $856 |
| Humira(Cf) Pen (Adalimumab) | Brand | 50 | 0 | $356,390 |
| Folic Acid | Generic | 28 | 0 | $188 |
| Enbrel Sureclick (Etanercept) | Brand | 24 | 0 | $166,495 |
| Colchicine | Generic | 23 | 11 | $1,112 |
| Cosentyx Sensoready Pen (Secukinumab) | Brand | 17 | 0 | $307,258 |
| Meloxicam | Generic | 15 | 0 | $178 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Lopker's medical specialty?
Dr. Michael Lopker practices Rheumatology Physician in Chicago, IL.
Where does Dr. Michael Lopker practice?
Dr. Michael Lopker practices at 240 E Huron St, Chicago, IL 606112909. Office phone: 3129262000.
What is Dr. Michael Lopker's NPI?
Dr. Michael Lopker's National Provider Identifier (NPI) is 1730535998, issued by NPPES.
Does Dr. Michael Lopker accept Medicare assignment?
Yes. Dr. Michael Lopker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Lopker 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 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.