Chaitanya K. Mamillapalli, M.D, MRCP
NPI 1710137930ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Springfield, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D, MRCP) with Springfield Clinic, LLP, practicing in Springfield, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,724,106 for 4,186 claims, against $194,387 paid for services in 2024. Novo Nordisk Inc was the largest of 23 companies reporting payments in 2025, $1,061 in all, mostly food and beverage. Lists Jacksonville Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1710137930 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D, MRCP |
| Sole proprietor | No |
| NPI issued | Sep 24, 2008 |
| Last updated in NPPES | May 21, 2020 |
| Certified by provider | May 21, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036-125425 | 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 | 391 |
|---|---|
| Services billed | 11,970 across 30 procedure codes |
| Paid by Medicare | $194,387 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,186 · 8,247 30-day fills |
|---|---|
| Patients | 514 |
| Total drug cost | $1,724,106 |
| Generic share | 40% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Springfield Clinic, LLPSpringfield, IL · 687 clinicians
Hospital affiliations
- Jacksonville Memorial HospitalJacksonville, IL
- Mason District HospitalHavana, IL
- Memorial Medical CenterSpringfield, IL
- St Johns HospitalSpringfield, IL
- Taylorville Memorial HospitalTaylorville, IL
Industry payments (Open Payments)
- 2025$1,061 · 54 payments from 23 companies
- 2024$488.82 · 28 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $160.57 | 7 |
| Corcept Therapeutics | $149.93 | 9 |
| Amgen Inc. | $91.72 | 5 |
| Abbott Laboratories | $78.48 | 4 |
| Madrigal Pharmaceuticals | $65.50 | 3 |
What the 2025 payments were for
- Food and Beverage$1,016 · 51 payments
- Education$44.79 · 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