ABBY HORNSTEIN (MD) – Blood Banking & Transfusion Medicine Physician, NPI 1427048628
Blood Banking & Transfusion Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
111 PATHOLOGY in RI
Provider Addresses for ABBY HORNSTEIN (MD)
825 Chalkstone Ave
Providence, RI 029084728
Phone: (401) 456-2109
Type: Location
Heywood Hospital, 242, Green Street, Gardner, Worcester County, Massachusetts, 01440, United States
GARDNER, MA 014401336
Phone: (978) 630-6256
Fax: (978) 630-6489
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $41.
Total Amount is formed as General ($41) + Research ($0) + Ownership ($0) = $41.
Last reported payment date: 2024-10-22 • Largest payer in this snapshot: Tempus AI, Inc ($18).
Total Amount
$41
General + Research + Ownership
Payments
3
Total payment records
General Amount
$41
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Tempus AI, Inc | $18 |
| Roche Diagnostics Corporation | $15 |
| Meridian Bioscience Inc. | $7 |
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: 2019-01-31
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20140925001438 | I | Pathology | MA | TBD |
| I20190131001278 | I | Pathology | RI | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 1,135 | 527 | $0 |
| 88112 | Cell examination of specimen, selective cellular enhancement technique | 472 | 356 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 112 | 33 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 105 | 67 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 87 | 75 | $0 |
Insurance plans in this area (ZIP 02908)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | MA | 88342 | Tissue or cell analysis by immunologic technique | 15 | 13 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | RI | |
| P A T H O L O G Y | TX | |
| P A T H O L O G Y | RI | |
| P A T H O L O G Y | RI | |
| P A T H O L O G Y | MA | |
| P A T H O L O G Y | MA | |
| P A T H O L O G Y | MD | |
| P A T H O L O G Y | RI | |
| P A T H O L O G Y | RI | |
| P A T H O L O G Y | NY |
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