Julia Serge Greer, M.D.
NPI 1437154200ActiveIndividual· Internal Medicine, Gastroenterology· Novi, MI
Internal Medicine, Gastroenterology (M.D.) with Comprehensive Gi Solutions PLLC, practicing in Novi, Michigan. Their prescriptions cost Medicare Part D more than their services did: $257,265 for 845 claims, against $110,176 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $56.07 in all, mostly food and beverage. Lists Ascension Providence Hospital, Southfield and Novi as a hospital affiliation.
Overview
| NPI | 1437154200 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 16, 2005 |
| Last updated in NPPES | Apr 22, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 4301073544 | MI |
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 - Gastroenterology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 550 |
|---|---|
| Services billed | 1,342 across 42 procedure codes |
| Paid by Medicare | $110,176 |
Part D prescriptions in 2024
| Prescriptions (claims) | 845 · 1,706 30-day fills |
|---|---|
| Patients | 243 |
| Total drug cost | $257,265 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Comprehensive Gi Solutions PLLCFarmington Hills, MI · 13 clinicians
Hospital affiliation
- Ascension Providence Hospital, Southfield and NoviSouthfield, MI
Industry payments (Open Payments)
- 2025$56.07 · 2 payments from 2 companies
- 2024$18.40 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $32.01 | 1 |
| Celltrion USA Inc. | $24.06 | 1 |
What the 2025 payments were for
- Food and Beverage$56.07 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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