Errol D. Crook, MD
NPI 1235181181ActiveIndividual· Internal Medicine, Nephrology· Mobile, AL
Internal Medicine, Nephrology (MD) in Mobile, Alabama, trained at Columbia University College of Physicians and Surgeons (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $8,531 for 34 claims, against $1,178 paid for services in 2024. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $35.52 in all, mostly food and beverage.
Overview
| NPI | 1235181181 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Aug 10, 2023 |
| Certified by provider | Aug 10, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 15213 | AL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (AL); Practitioner - Nephrology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 15 across 6 procedure codes |
| Paid by Medicare | $1,178 |
Part D prescriptions in 2024
| Prescriptions (claims) | 34 · 69 30-day fills |
|---|---|
| Patients | 17 |
| Total drug cost | $8,531 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Nephrology |
Medical groups
- Morehouse Healthcare, Inc.East Point, GA · 154 clinicians
- Morehouse Medicine Inc.East Point, GA · 30 clinicians
Hospital affiliation
- Grady Memorial HospitalAtlanta, GA
Industry payments (Open Payments)
- 2025$35.52 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $30.54 | 1 |
| Travere Therapeutics, Inc. | $4.98 | 3 |
What the 2025 payments were for
- Food and Beverage$30.54 · 1 payment
- Education$4.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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