Walter Peter Mutter, M.D.
NPI 1104895556ActiveIndividual· Internal Medicine, Nephrology· Newton, MA
Internal Medicine, Nephrology (M.D.) in Newton, Massachusetts, trained at University of Massachusetts Medical School (class of 1999). 868 Medicare patients in 2024, $194,295 paid; nearly all of their 882 Part D prescriptions were generic (94%). Travere Therapeutics, Inc. reported $14.15 in payments in 2025, mostly education.
Overview
| NPI | 1104895556 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 17, 2006 |
| Last updated in NPPES | May 6, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 210130 | MA |
| Internal Medicine | 207R00000X | 210130 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 868 |
|---|---|
| Services billed | 2,358 across 22 procedure codes |
| Paid by Medicare | $194,295 |
Part D prescriptions in 2024
| Prescriptions (claims) | 882 · 2,285 30-day fills |
|---|---|
| Patients | 203 |
| Total drug cost | $73,838 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of Massachusetts Medical School |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
- Mass General Brigham Medical Group Suburban Massachusetts IncPembroke, MA · 602 clinicians
Hospital affiliations
- Brigham and Women Faulkner HospitalJamaica Plain, MA
- Brigham and Women's HospitalBoston, MA
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
- North Shore Medical Center -Salem, MA
Other facilities
- Fmc Westwood Dialysis Center (Bma Westwood)Dialysis facility · Westwood, MA
- Fresenius Kidney Care WellesleyDialysis facility · Wellesley, MA
- The Dialysis Center at WalthamDialysis facility · Waltham, MA
- Wellesley DialysisDialysis facility · Wellesley, MA
Industry payments (Open Payments)
- 2025$14.15 · 2 payments from 1 company
- 2024$59.98 · 5 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $14.15 | 2 |
What the 2025 payments were for
- Education$14.15 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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