Marian Lacy, M.D.
NPI 1780987073ActiveIndividual· Internal Medicine, Infectious Disease· Flagstaff, AZ
Internal Medicine, Infectious Disease (M.D.) in Flagstaff, Arizona, trained at Johns Hopkins University School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $13,777 for 52 claims, against $1,837 paid for services in 2024. Astellas Pharma US Inc was the largest of 2 companies reporting payments in 2025, $106.87 in all, mostly education.
Overview
| NPI | 1780987073 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 8, 2010 |
| Last updated in NPPES | Nov 4, 2025 |
| Certified by provider | Nov 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 52413 | 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); Practitioner - Infectious Disease (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 21 across 5 procedure codes |
| Paid by Medicare | $1,837 |
Part D prescriptions in 2024
| Prescriptions (claims) | 52 · 74 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $13,777 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist, Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Northern Arizona Healthcare CorporationFlagstaff, AZ · 385 clinicians
Hospital affiliations
- Flagstaff Medical CenterFlagstaff, AZ
- Verde Valley Medical CenterCottonwood, AZ
Other facilities
- Angels Care Home Health of Arizona No 5Home health agency · Flagstaff, AZ
Industry payments (Open Payments)
- 2025$106.87 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $83.00 | 1 |
| Insulet Corporation | $23.87 | 1 |
What the 2025 payments were for
- Education$83.00 · 1 payment
- Food and Beverage$23.87 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Infectious Disease providers in Arizona →