NITIN AGGARWAL (M.D.) – Gastroenterology Physician, NPI 1407145402
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
828 GASTROENTEROLOGY in MA
Provider Addresses for NITIN AGGARWAL (M.D.)
4 Meeting House Rd Ste 6
Chelmsford, MA 018242775
Phone: (978) 454-9811
Type: Location
4 MEETING HOUSE RD STE 6
CHELMSFORD, MA 018242775
Phone: (978) 454-9811
Type: Location
20 RESEARCH PL STE 220
NORTH CHELMSFORD, MA 018632455
Phone: (978) 459-6737
Fax: (855) 818-1869
Type: Location
9500 Euclid Ave
A31
Cleveland, OH 441950001
Phone: (216) 636-9561
Type: Location
295 Varnum Ave
Lowell, MA 018542134
Phone: (978) 937-6000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 87 Open Payments records for all available years, with a total value of $2,855.
Total Amount is formed as General ($2,855) + Research ($0) + Ownership ($0) = $2,855.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: Medtronic, Inc. ($1,661).
Total Amount
$2,855
General + Research + Ownership
Payments
87
Total payment records
General Amount
$2,855
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $1,661 |
| ABBVIE INC. | $362 |
| Gilead Sciences, Inc. | $136 |
| GENZYME CORPORATION | $125 |
| PFIZER INC. | $119 |
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: 2019-07-30
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 |
|---|---|---|---|---|
| I20190730003210 | I | Gastroenterology | 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 |
|---|---|---|---|---|
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 100 | 98 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 85 | 69 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 63 | 60 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 57 | 56 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 42 | 41 | $0 |
Insurance plans in this area (ZIP 01824)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P A T H O L O G Y | MA | |
| G A S T R O E N T E R O L O G Y | MA | |
| G A S T R O E N T E R O L O G Y | MA | |
| Certified Registered Nurse Anesthetist (Crna) | ME | |
| Gastroenterology, Internal Medicine | MA | |
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| Certified Registered Nurse Anesthetist (Crna) | NH | |
| Physical Therapist In Private Practice | MA | |
| G A S T R O E N T E R O L O G Y | MA | |
| Gastroenterology, Diagnostic Radiology | AZ |
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