GREGORY K. BULLER (M.D.) – Nephrology Physician, NPI 1154321768
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
204 NEPHROLOGY in CT
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Provider Addresses for GREGORY K. BULLER (M.D.)
Bridgeport Hospital, 267, Grant Street, Historic East Side, Bridgeport, Fairfield County, Connecticut, 06610, United States
BRIDGEPORT, CT 06610
Phone: (203) 384-3470
Fax: (203) 384-4696
Type: Mailing
850, Straits Turnpike, Oronoke, Middlebury, New Haven County, Connecticut, 06762, United States
MIDDLEBURY, CT 067622843
Phone: (203) 758-1800
Fax: (203) 758-1804
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 $86.
Total Amount is formed as General ($86) + Research ($0) + Ownership ($0) = $86.
Last reported payment date: 2024-11-18 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($86).
Total Amount
$86
General + Research + Ownership
Payments
1
Total payment records
General Amount
$86
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novartis Pharmaceuticals Corporation | $86 |
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: 2008-03-10
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 |
|---|---|---|---|---|
| I20080310000600 | I | Nephrology | CT | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 06610)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | CT | |
| - | CT | |
| - | CT | |
| Internal Medicine | NJ | |
| Hospitalist, Internal Medicine | CT | |
| - | CT | |
| - | CT | |
| Internal Medicine | CT | |
| Nurse Practitioner | CT | |
| Physician Assistant | CT |
Reviews
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