Michael G. Jakoby Sr., M.D.
NPI 1770515181ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Springfield, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Springfield, Illinois, trained at University of Washington School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $615,415 for 1,638 claims, against $31,063 paid for services in 2024. Corcept Therapeutics was the largest of 2 companies reporting payments in 2025, $266.96 in all, mostly food and beverage.
Overview
| NPI | 1770515181 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 7, 2006 |
| Last updated in NPPES | Sep 29, 2026 |
| Certified by provider | Nov 17, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036-106808 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 163 |
|---|---|
| Services billed | 6,881 across 20 procedure codes |
| Paid by Medicare | $31,063 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,638 · 3,392 30-day fills |
|---|---|
| Patients | 182 |
| Total drug cost | $615,415 |
| Generic share | 45% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Endocrinology |
Medical group
- Siu Physicians and Surgeons IncSpringfield, IL · 314 clinicians
Hospital affiliations
- Jacksonville Memorial HospitalJacksonville, IL
- Memorial Medical CenterSpringfield, IL
Industry payments (Open Payments)
- 2025$266.96 · 3 payments from 2 companies
- 2024$373.21 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $249.93 | 2 |
| Abbott Laboratories | $17.03 | 1 |
What the 2025 payments were for
- Food and Beverage$266.96 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 endocrinologists in Springfield · All endocrinologists in Illinois