Marcus Mayus, M.D.
NPI 1073734935ActiveIndividual· Internal Medicine· Greenwich, CT
Internal Medicine (M.D.) in Greenwich, Connecticut, trained at New York Medical College (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $1,872,186 for 17,140 claims, against $750,783 paid for services in 2024. Abbvie Inc. was the largest of 34 companies reporting payments in 2025, $4,860 in all, mostly food and beverage.
Overview
| NPI | 1073734935 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 1, 2007 |
| Last updated in NPPES | May 31, 2022 |
| Certified by provider | May 31, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 045877 | 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 | 1,213 |
|---|---|
| Services billed | 11,576 across 50 procedure codes |
| Paid by Medicare | $750,783 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17,140 · 37,962 30-day fills |
|---|---|
| Patients | 1,459 |
| Total drug cost | $1,872,186 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Rehabilitation Associates IncFairfield, CT · 529 clinicians
- Marcus Mayus MD IncGreenwich, CT · 3 clinicians
Hospital affiliations
- Greenwich Hospital Association -Greenwich, CT
- Stamford HospitalStamford, CT
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Constellation Home CareHome health agency · Norwalk, CT
- Health Care Connectors LLCHome health agency · Greenwich, CT
- RvnahealthHome health agency · Ridgefield, CT
- Sterling Care LLCHome health agency · Greenwich, CT
- Visiting Nurse & Hospice of Fairfield County, IncHome health agency · Wilton, CT
- Burke Rehabilitation HospitalInpatient rehabilitation facility · White Plains, NY
- Edgehill Health CenterNursing home · Stamford, CT
Industry payments (Open Payments)
- 2025$4,860 · 225 payments from 34 companies
- 2024$5,387 · 261 payments from 34 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $989.20 | 54 |
| Axsome Therapeutics, Inc. | $454.93 | 7 |
| Pfizer Inc. | $450.60 | 27 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $344.95 | 14 |
| Novo Nordisk Inc | $329.19 | 14 |
What the 2025 payments were for
- Food and Beverage$4,781 · 224 payments
- Education$78.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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