ASHISH MAHAJAN (M.D.) – Nephrology Physician, NPI 1497974539
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
458 NEPHROLOGY in MA
Provider Addresses for ASHISH MAHAJAN (M.D.)
28 MOUNT VERNON ST
UNIT #1
SOMERVILLE, MA 021453344
Phone: (617) 636-9606
Type: Mailing
TUFTS NEW ENGLAND MEDICAL CENTER
750 WASHINGTON ST. #391
BOSTON, MA 02111
Phone: (617) 636-9606
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2007-09-12
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 |
|---|---|---|---|---|
| I20070912000421 | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 577 | 181 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 212 | 85 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 201 | 119 | $0 |
| 90935 | Hemodialysis procedure with physician evaluation | 153 | 43 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 113 | 100 | $0 |
Insurance plans in this area (ZIP 02145)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | MA | |
| N E P H R O L O G Y | MA | |
| Nephrology, Internal Medicine | CA | |
| - | MA |
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