Guillermo E. Umpierrez, M.D.
NPI 1174626063ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Atlanta, GA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with Emory Medical Care Foundation Inc, practicing in Atlanta, Georgia. Their prescriptions cost Medicare Part D more than their services did: $100,658 for 229 claims, against $2,057 paid for services in 2024. Sanofi Pasteur Inc. was the largest of 8 companies reporting payments in 2025, $32,003 in all, mostly speaking and faculty fees. Lists Grady Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1174626063 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 6, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 25914 | GA |
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 - Endocrinology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 31 |
|---|---|
| Services billed | 33 across 5 procedure codes |
| Paid by Medicare | $2,057 |
Part D prescriptions in 2024
| Prescriptions (claims) | 229 · 522 30-day fills |
|---|---|
| Patients | 61 |
| Total drug cost | $100,658 |
| Generic share | 45% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Medical group
- Emory Medical Care Foundation IncAtlanta, GA · 1,015 clinicians
Hospital affiliation
- Grady Memorial HospitalAtlanta, GA
Industry payments (Open Payments)
- 2025$32,003 · 32 payments from 8 companies
- 2024$11,272 · 32 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi Pasteur Inc. | $14,214 | 1 |
| Sanofi-Aventis U.S. LLC | $6,374 | 2 |
| Recordati_rare_diseases_inc. | $6,371 | 6 |
| Abbott Laboratories | $2,602 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $1,169 | 14 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$20,394 · 2 payments
- Honoraria$5,100 · 1 payment
- Compensation for serving as faculty or as a speaker for a medical education program$2,893 · 2 payments
- Travel and Lodging$2,429 · 8 payments
- Food and Beverage$1,131 · 18 payments
- Education$56.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Atlanta
- 1366492282
- 1245141365
- 1417868704
- 1528977790
- 1558272898
- 1750292868
- 1720023393
- 1588866198
- 1629390836
- 1295951077
- 1346018991
- 1831232396
All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Georgia →