DR. MOHAMED MAHMOUD (MD) – Internal Medicine Physician, NPI 1033191366
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,722 INTERNAL MEDICINE in MA
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Provider Addresses for DR. MOHAMED MAHMOUD (MD)
Charlestown Post Office (mobile), Pattern Close, St Austell Bay, Charlestown, Cornwall, England, PL25 3FQ, United Kingdom
MASS GENERAL PHYSICIAN ORGANIZATION
CHARLESTOWN, MA 021299142
Phone: (617) 724-0287
Fax: (617) 726-2894
Type: Mailing
Winchester Hospital, 41, Highland Avenue, Symmes Corner, Winchester, Middlesex County, Massachusetts, 01890, United States
WINCHESTER, MA 018901446
Phone: (781) 756-7095
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $21.
Total Amount is formed as General ($21) + Research ($0) + Ownership ($0) = $21.
Last reported payment date: 2024-10-09 • Largest payer in this snapshot: Ferring Pharmaceuticals Inc. ($21).
Total Amount
$21
General + Research + Ownership
Payments
1
Total payment records
General Amount
$21
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Ferring Pharmaceuticals Inc. | $21 |
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: 2006-11-29
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 |
|---|---|---|---|---|
| I20061129000206 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 328 | 315 | $0 |
| 99236 | Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 02129)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | MA | |
| Nurse Practitioner | MA | |
| Internal Medicine, Nephrology | MA | |
| Hospitalist, Internal Medicine | MA | |
| Physician Assistant | MA | |
| - | MA | |
| Internal Medicine | MA | |
| Internal Medicine | MA | |
| Nurse Practitioner | MA | |
| Critical Care (Intensivists) | MA |
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