Tamim R. Mahayni, DO
NPI 1184935132ActiveIndividual· Internal Medicine, Pulmonary Disease· Ames, IA
Internal Medicine, Pulmonary Disease (DO) with McFarland Clinic PC, practicing in Ames, Iowa. Their prescriptions cost Medicare Part D more than their services did: $1,761,129 for 3,932 claims, against $161,106 paid for services in 2024. Intuitive Surgical, Inc. reported $7,892 in payments in 2025, mostly education. Lists Boone County Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1184935132 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 24, 2010 |
| Last updated in NPPES | Jan 26, 2021 |
| Certified by provider | Jan 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 05054 | IA |
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 - Pulmonary Disease (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 914 |
|---|---|
| Services billed | 3,367 across 48 procedure codes |
| Paid by Medicare | $161,106 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,932 · 4,906 30-day fills |
|---|---|
| Patients | 551 |
| Total drug cost | $1,761,129 |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine |
Medical group
- McFarland Clinic PCAmes, IA · 363 clinicians
Hospital affiliations
- Boone County HospitalBoone, IA
- Mary Greeley Medical CenterAmes, IA
- Mercyone Des Moines Medical CenterDes Moines, IA
- St Anthony Regional Hospital & Nursing HomeCarroll, IA
- Unitypoint Health - MarshalltownMarshalltown, IA
Industry payments (Open Payments)
- 2025$7,892 · 14 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $7,892 | 14 |
What the 2025 payments were for
- Education$5,500 · 3 payments
- Travel and Lodging$2,382 · 10 payments
- Food and Beverage$9.98 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other pulmonologists in Ames
- 1497316582
- 1477535771