NICHOLAS KARAMITSIOS (MD) – Gastroenterology Physician, NPI 1326049669
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
828 GASTROENTEROLOGY in MA
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Provider Addresses for NICHOLAS KARAMITSIOS (MD)
340, Main Street, Leominster, Worcester County, Massachusetts, 01453, United States
STE. 670
WORCESTER, MA 016081604
Phone: (508) 754-3566
Fax: (508) 798-8012
Type: Mailing
55, Highland Avenue, Salem, Essex County, Massachusetts, 01970, United States
STE 304
SALEM, MA 019702100
Phone: (978) 741-4171
Fax: (978) 741-4283
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $577.
Total Amount is formed as General ($577) + Research ($0) + Ownership ($0) = $577.
Last reported payment date: 2024-04-03 • Largest payer in this snapshot: ABBVIE INC. ($200).
Total Amount
$577
General + Research + Ownership
Payments
5
Total payment records
General Amount
$577
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-03
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $200 |
| E.R. Squibb & Sons, L.L.C. | $135 |
| Intercept Pharmaceuticals, Inc. | $125 |
| Phathom Pharmaceuticals, Inc. | $117 |
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: 2006-04-03
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 |
|---|---|---|---|---|
| I20060403000646 | 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 | 254 | 254 | $0 |
| G0500 | Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 161 | 161 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 116 | 115 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 69 | 65 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 66 | 66 | $0 |
Insurance plans in this area (ZIP 01608)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | MA | 45385 | Removal of polyps or growths of large bowel using an endoscope | 27 | 26 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| - | MA | |
| Nurse Practitioner | MA | |
| Hospice/Palliative Care | MI | |
| Emergency Medicine | MA | |
| - | MA | |
| - | MA | |
| Nurse Practitioner | MA | |
| Emergency Medicine | MA | |
| - | MA |
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