WALTER PETER MUTTER (M.D.) – Nephrology Physician, NPI 1104895556
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
458 NEPHROLOGY in MA
Provider Addresses for WALTER PETER MUTTER (M.D.)
NEWTON WELLESLEY PHYSICIANS NEPHROLOGY
NEWTON WELLESLEY HOSPITAL, GREEN 460
NEWTON, MA 20462
Phone: (617) 243-5420
Type: Location
NEWTON WELLESLEY HOSPITAL, GREEN 460
NEWTON WELLESLEY PHYSICIANS NEPHROLOGY
NEWTON, MA 20462
Phone: (617) 243-5420
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $66.
Total Amount is formed as General ($66) + Research ($0) + Ownership ($0) = $66.
Last reported payment date: 2024-09-26 • Largest payer in this snapshot: Travere Therapeutics, Inc. ($66).
Total Amount
$66
General + Research + Ownership
Payments
7
Total payment records
General Amount
$66
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Travere Therapeutics, Inc. | $66 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2007-01-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20070124000225 | I | Nephrology | MA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 586 | 353 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 344 | 120 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 208 | 173 | $0 |
| 90962 | Dialysis services, 1 physician visit per month (20 years or older) | 200 | 24 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 168 | 142 | $0 |
Insurance plans in this area (ZIP 20462)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | MA | 90961 | Dialysis services (2-3 physician visits per month), patient 20 years of age and older | 159 | 29 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| N E U R O L O G Y | MA | |
| Family Practice | NY | |
| Internal Medicine | MA | |
| - | MA | |
| - | MA | |
| - | CO | |
| - | MA | |
| - | MA | |
| Pulmonary Disease, Critical Care (Intensivists), Internal Medicine | MA | |
| - | MA |
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