Doctor profile · Federal record
Dr. Charles Geringer, M.D.
Rheumatology Physician (CMS: Rheumatology) · Olympia Fields, IL
- NPI 1235195702
- Accepts Medicare
- 47 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3700 W 203Rd St Ste 209
Olympia Fields, IL 604611182
(708) 679-2884
fax (708) 679-2836 - Mailing address
-
Po Box 781076
Detroit, MI 482781076
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- March 19, 2021
- Year of graduation
- 1979 — 47 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Illinois #036063321
- Medicaid
- IL #036063321
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235195702. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
954
Distinct HCPCS
10
Medicare allowed
$87,453
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 178 | 154 | $95 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 171 | 147 | $70 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 145 | 112 | $133 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 143 | 106 | $102 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 63 | 19 | $80 | |
J1040 |
Injection, methylprednisolone acetate, 80 mg | 58 | 38 | $12 | |
96372 |
Injection of drug or substance under skin or into muscle | 34 | 29 | $15 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 33 | 33 | $140 | |
20610 |
Aspiration and/or injection of fluid from large joint | 28 | 18 | $56 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 28 | 28 | $169 |
In context: peer comparison
Among 3 peers in Olympia Fields Rheumatology Physician, average services per provider: 4,041. This provider delivers 0.2× the peer median.Open Payments
Industry payments received
All-time total
$2,615
Transactions
95
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen INC. | 25 | $656.81 | |
| Pfizer INC. | 18 | $615.25 | |
| Abbvie INC. | 14 | $322.38 | |
| Janssen Biotech, INC. | 8 | $198.50 | |
| Ani Pharmaceuticals, INC. | 4 | $123.69 | |
| E.R. Squibb & Sons, L.L.C. | 5 | $117.02 | |
| Novartis Pharmaceuticals Corporation | 4 | $92.27 | |
| Lilly USA, LLC | 4 | $70.34 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 3 | $58.56 | |
| Kyowa Kirin, INC. | 2 | $46.36 | |
| Biocon Biologics INC | 1 | $41.70 | |
| Ucb, INC. | 2 | $36.23 | |
| Mallinckrodt Hospital Products INC. | 1 | $35.32 | |
| Organon LLC | 2 | $33.97 | |
| Sobi, INC | 2 | $33.70 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,413
Patients
545
Total drug cost
$51,969
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 308 | 109 | $3,157 |
| Hydroxychloroquine Sulfate | Generic | 213 | 87 | $13,046 |
| Methotrexate (Methotrexate Sodium) | Brand | 204 | 84 | $9,619 |
| Gabapentin | Generic | 106 | 49 | $2,409 |
| Leflunomide | Generic | 106 | 42 | $8,219 |
| Allopurinol | Generic | 83 | 28 | $1,393 |
| Duloxetine Hcl | Generic | 64 | 20 | $2,458 |
| Azathioprine | Generic | 56 | 21 | $2,659 |
| Diclofenac Sodium | Generic | 54 | 33 | $2,474 |
| Sulfasalazine | Generic | 54 | 17 | $2,224 |
Frequently asked questions
What is Dr. Charles Geringer's medical specialty?
Dr. Charles Geringer practices Rheumatology Physician in Olympia Fields, IL.
Where does Dr. Charles Geringer practice?
Dr. Charles Geringer practices at 3700 W 203Rd St Ste 209, Olympia Fields, IL 604611182. Office phone: 7086792884.
What is Dr. Charles Geringer's NPI?
Dr. Charles Geringer's National Provider Identifier (NPI) is 1235195702, issued by NPPES.
Does Dr. Charles Geringer accept Medicare assignment?
Yes. Dr. Charles Geringer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Geringer commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.