Lily Singhaviranon, MD
NPI 1508883398ActiveIndividual· Internal Medicine· Danbury, CT
Internal Medicine (MD) with United Community and Family Services, Inc, practicing in Danbury, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $1,306,599 for 11,515 claims, against $398.48 paid for services in 2024. Vanda Pharmaceuticals Inc. was the largest of 18 companies reporting payments in 2025, $1,049 in all, mostly food and beverage. Lists Lawrence & Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1508883398 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 16, 2006 |
| Last updated in NPPES | May 6, 2026 |
| Certified by provider | May 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 043371 | CT |
| Hospitalist | 208M00000X | 043371 | 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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 28 |
|---|---|
| Services billed | 45 across 3 procedure codes |
| Paid by Medicare | $398.48 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,515 · 16,020 30-day fills |
|---|---|
| Patients | 507 |
| Total drug cost | $1,306,599 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- United Community and Family Services, IncNorwich, CT · 73 clinicians
Hospital affiliations
- Lawrence & Memorial HospitalNew London, CT
- William W Backus HospitalNorwich, CT
Other facilities
- Day Kimball HomecareHome health agency · North Grosvenordale, CT
- Hartford Healthcare at HomeHome health agency · East Hartford, CT
Industry payments (Open Payments)
- 2025$1,049 · 45 payments from 18 companies
- 2024$1,681 · 82 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vanda Pharmaceuticals Inc. | $138.50 | 5 |
| Astellas Pharma US Inc | $103.43 | 4 |
| Abbvie Inc. | $99.01 | 5 |
| Glaxosmithkline, LLC. | $97.43 | 5 |
| Lilly USA, LLC | $91.84 | 3 |
What the 2025 payments were for
- Food and Beverage$1,049 · 45 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 125 internal medicine physicians in Danbury · All internal medicine physicians in Connecticut