Guy Vin Chang, M.D.
NPI 1154718955ActiveIndividual· Internal Medicine, Geriatric Medicine· Washington, DC
Internal Medicine, Geriatric Medicine (M.D.) with Medstar Total Elder Care, LLC, practicing in Washington, District of Columbia. Their prescriptions cost Medicare Part D more than their services did: $260,537 for 1,393 claims, against $126,614 paid for services in 2024. Caris Mpi, Inc. reported $34.97 in payments in 2025, mostly food and beverage. Lists Medstar Washington Hospital Center as a hospital affiliation.
Overview
| NPI | 1154718955 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 20, 2015 |
| Last updated in NPPES | Jun 22, 2022 |
| Certified by provider | Jun 22, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | MD210002191 | DC |
| Hospitalist | 208M00000X | 11014 | SD |
| Student in an Organized Health Care Education/Training Program | 390200000X | T0741 | TX |
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 - Geriatric Medicine (DC); Practitioner - Internal Medicine (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 312 |
|---|---|
| Services billed | 1,252 across 33 procedure codes |
| Paid by Medicare | $126,614 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,393 · 3,080 30-day fills |
|---|---|
| Patients | 186 |
| Total drug cost | $260,537 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Geriatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Medstar Total Elder Care, LLCBaltimore, MD · 27 clinicians
Hospital affiliation
- Medstar Washington Hospital CenterWashington, DC
Other facilities
- Amedisys Home HealthHome health agency · Washington, DC
- Medstar Health VnaHome health agency · Washington, DC
- Professional HealthcareHome health agency · Washington, DC
- Capital HospiceHospice · Washington, DC
Industry payments (Open Payments)
- 2025$34.97 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Caris Mpi, Inc. | $34.97 | 1 |
What the 2025 payments were for
- Food and Beverage$34.97 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 geriatricians in Washington · All geriatricians in District of Columbia