Doctor profile · Federal record
Dr. Casey Younkin, M.D.
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Springfield, IL
- NPI 1659352656
- Accepts Medicare
- 43 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
415 N 9Th St, 6Th Floor
Springfield, IL 627025317
(217) 545-5117
fax (217) 545-4912 - Additional location
-
421 N 9Th St Bldg Q
Springfield, IL 627025317
(217) 545-8000 - Mailing address
-
Po Box 19639
Springfield, IL 627949639
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- November 20, 2025
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- Illinois #036077173
- Medicaid
- IL #036077173
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659352656. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,182
Distinct HCPCS
8
Medicare allowed
$43,401
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0897 |
Injection, denosumab, 1 mg | 960 | 13 | $23 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 93 | 91 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 48 | 38 | $87 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 23 | 23 | $156 | |
81003 |
Automated urinalysis test | 17 | 17 | $2 | |
96372 |
Injection of drug or substance under skin or into muscle | 15 | 12 | $14 | |
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 15 | 15 | $38 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 11 | 11 | $110 |
In context: peer comparison
Among 17 peers in this city , average services per provider: 52. This provider delivers 23× the peer median.Open Payments
Industry payments received
All-time total
$2,750
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Organon Llc | 2 | $2,750.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
568
Patients
159
Total drug cost
$99,981
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Estradiol | Generic | 93 | 29 | $3,267 |
| Oxybutynin Chloride Er (Oxybutynin Chloride) | Brand | 62 | 17 | $2,756 |
| Imvexxy (Estradiol) | Brand | 58 | 0 | $16,049 |
| Myrbetriq (Mirabegron) | Brand | 55 | 12 | $51,311 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 40 | 21 | $1,309 |
| Premarin (Estrogens, Conjugated) | Brand | 36 | 0 | $17,027 |
| Medroxyprogesterone Acetate | Generic | 34 | 12 | $649 |
| Clobetasol Propionate | Generic | 33 | 25 | $1,262 |
| Fluconazole | Generic | 33 | 17 | $135 |
| Metronidazole | Generic | 33 | 13 | $694 |
Hospital affiliations
Frequently asked questions
What is Dr. Casey Younkin's medical specialty?
Dr. Casey Younkin practices Obstetrics & Gynecology Physician in Springfield, IL.
Where does Dr. Casey Younkin practice?
Dr. Casey Younkin practices at 415 N 9Th St, Springfield, IL 627025317. Office phone: 2175455117.
What is Dr. Casey Younkin's NPI?
Dr. Casey Younkin's National Provider Identifier (NPI) is 1659352656, issued by NPPES.
Does Dr. Casey Younkin accept Medicare assignment?
Yes. Dr. Casey Younkin accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Casey Younkin commonly perform?
Top Medicare-reported procedures in 2023: Injection, denosumab, 1 mg (HCPCS J0897); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.