Calvin William Parker III, M.D.
NPI 1073654976ActiveIndividual· Internal Medicine· Baltimore, MD
Internal Medicine (M.D.) in Baltimore, Maryland, trained at Howard University College of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $318,511 for 510 claims, against $152,808 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $1,486 in all, mostly food and beverage.
Overview
| NPI | 1073654976 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 12, 2007 |
| Last updated in NPPES | Mar 9, 2022 |
| Certified by provider | Mar 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | D81266 | MD |
| Internal Medicine | 207R00000X | 057556 | GA |
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 - Gastroenterology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 698 |
|---|---|
| Services billed | 3,296 across 42 procedure codes |
| Paid by Medicare | $152,808 |
Part D prescriptions in 2024
| Prescriptions (claims) | 510 · 746 30-day fills |
|---|---|
| Patients | 258 |
| Total drug cost | $318,511 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Gastroenterology |
Medical groups
- Sinai Hospital of Baltimore, IncBaltimore, MD · 380 clinicians
- Lifebridge Community Gastroenterology LLCPikesville, MD · 54 clinicians
Hospital affiliations
- Carroll Hospital CenterWestminster, MD
- Northwest Hospital CenterRandallstown, MD
- Sinai Hospital of BaltimoreBaltimore, MD
Industry payments (Open Payments)
- 2025$1,486 · 80 payments from 16 companies
- 2024$1,342 · 77 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $472.00 | 29 |
| Janssen Biotech, Inc. | $201.17 | 10 |
| Ipsen Biopharmaceuticals, Inc | $163.21 | 10 |
| Genzyme Corporation | $128.31 | 6 |
| Ardelyx, Inc. | $81.74 | 4 |
What the 2025 payments were for
- Food and Beverage$1,486 · 80 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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