Guillermo Jose Ballarino, M.D.
NPI 1386810802ActiveIndividual· Internal Medicine, Pulmonary Disease· Danbury, CT
Internal Medicine, Pulmonary Disease (M.D.) with Nuvance Health Medical Practice CT Inc, practicing in Danbury, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $979,080 for 1,546 claims, against $117,900 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 3 companies reporting payments in 2025, $102.32 in all, mostly food and beverage. Lists Danbury Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1386810802 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 5, 2008 |
| Last updated in NPPES | Jul 11, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 050532 | CT |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 050532 | CT |
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 (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 582 |
|---|---|
| Services billed | 1,517 across 56 procedure codes |
| Paid by Medicare | $117,900 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,546 · 2,486 30-day fills |
|---|---|
| Patients | 395 |
| Total drug cost | $979,080 |
| Generic share | 36% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
| Telehealth | Offers telehealth |
Medical group
- Nuvance Health Medical Practice CT IncDanbury, CT · 747 clinicians
Hospital affiliations
- Danbury HospitalDanbury, CT
- Putnam Hospital CenterCarmel, NY
Other facilities
- Regional HospiceHospice · Danbury, CT
Industry payments (Open Payments)
- 2025$102.32 · 5 payments from 3 companies
- 2024$1,043 · 8 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $54.50 | 3 |
| Verona Pharma, Inc. | $27.96 | 1 |
| Insmed, Inc. | $19.86 | 1 |
What the 2025 payments were for
- Food and Beverage$102.32 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 17 pulmonologists in Danbury · All pulmonologists in Connecticut