John Clinton Griffin, DO
NPI 1235628033ActiveIndividual· Internal Medicine· Mesa, AZ
Internal Medicine (DO) in Mesa, Arizona, trained at Arizona College of Osteopathic Medicine Mid Western University (class of 2018). In 2024 Medicare paid $129,127 for 526 patients, and Part D covered 1,347 of their prescriptions, 81% of them generic. Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $15.26 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1235628033 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 7, 2018 |
| Last updated in NPPES | Feb 18, 2022 |
| Certified by provider | Feb 18, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 009394 | AZ |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | AZ |
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 - Internal Medicine (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 526 |
|---|---|
| Services billed | 1,466 across 6 procedure codes |
| Paid by Medicare | $129,127 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,347 · 1,816 30-day fills |
|---|---|
| Patients | 366 |
| Total drug cost | $112,896 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Arizona College of Osteopathic Medicine Mid Western University |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospice/Palliative Care |
Medical group
- Aia Hospitalists LLCPhoenix, AZ · 53 clinicians
Hospital affiliations
- Chandler Regional Medical CenterChandler, AZ
- Dignity Health Arizona General HospitalMesa, AZ
- Honor Health John C. Lincoln Medical CenterPhoenix, AZ
Other facilities
- Thema Health ServicesHome health agency · Phoenix, AZ
- Thema Health ServicesHospice · Phoenix, AZ
Industry payments (Open Payments)
- 2025$15.26 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $15.26 | 1 |
What the 2025 payments were for
- Food and Beverage$15.26 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 259 internal medicine physicians in Mesa · All internal medicine physicians in Arizona