Casey Younkin, M.D.
NPI 1659352656 · Obstetrics & Gynecology Physician · Springfield, IL
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Casey Younkin, M.D. is a Obstetrics & Gynecology Physician provider in Springfield, IL (NPI 1659352656).
Provider details
- NPI number
- 1659352656
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036077173 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
220 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 101 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 44 | $86 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 33 | $13 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 20 | $162 |
| Automated Urinalysis Test81003 | 11 | $2 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 11 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 115 | 34 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 66 | 20 |
| Mirabegronbrand: Myrbetriq | 57 | 15 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 40 | 15 |
| Clobetasol Propionate | 36 | 22 |
| Estrogens, Conjugatedbrand: Premarin | 32 | — |
| Estradiolbrand: Imvexxy | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,750 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 421 N 9th St Bldg QSpringfield, IL 62702-5317Phone: (217) 545-8000
Registry dates
- Enumerated
- 2005-11-08
- Last updated
- 2025-11-20
- Certified
- 2025-11-20
Frequently asked questions
- What is Casey Younkin's NPI number?
- Casey Younkin's National Provider Identifier (NPI) is 1659352656, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Casey Younkin's specialty?
- Casey Younkin is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Casey Younkin located?
- Casey Younkin's practice location on file with NPPES is 415 N 9th St, Springfield, IL 62702-5317.
- What is Casey Younkin's phone number?
- The practice phone number listed in the NPPES registry for Casey Younkin is (217) 545-5117.
- Does Casey Younkin accept Medicare?
- Casey Younkin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Casey Younkin's NPI active?
- Yes — Casey Younkin's NPI (1659352656) is active in the NPPES registry as of the last update on 2025-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.