Phenu V. Zachariah, DO
NPI 1386838340ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Tomball, TX
Internal Medicine, Endocrinology, Diabetes & Metabolism (DO) in Tomball, Texas, trained at Midwestern University, Chicago College of Osteopathic Med (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $780,106 for 1,642 claims, against $38,361 paid for services in 2024.
Overview
| NPI | 1386838340 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Sep 4, 2007 |
| Last updated in NPPES | Oct 12, 2026 |
| Certified by provider | Oct 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | V1927 | TX |
| Internal Medicine, Bariatric Medicine | 207RB0002X | V1927 | TX |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | 70454 | WI |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | 2010020902 | MO |
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 (TX); Practitioner - Endocrinology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 142 |
|---|---|
| Services billed | 584 across 14 procedure codes |
| Paid by Medicare | $38,361 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,642 · 2,949 30-day fills |
|---|---|
| Patients | 195 |
| Total drug cost | $780,106 |
| Generic share | 24% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Endocrinology |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Tomball
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