JAMIE LYNNE CASSITY (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1255424974
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
406 PATHOLOGY in MO
Provider Addresses for JAMIE LYNNE CASSITY (M.D.)
One Barnes-Jewish Hospital Plaza
Saint Louis, MO 631101092
Phone: (314) 362-5000
Type: Location
Barnes-Jewish Hospital, 1, Barnes Jewish Hospital Plaza, Central West End, St. Louis, Missouri, 63110, United States
SAINT LOUIS, MO 631101003
Phone:
Type: Mailing
Barnes Jewish Hospital Plaza, Central West End, St. Louis, Missouri, 63110, United States
SAINT LOUIS, MO 631101092
Phone: (314) 362-5000
Type: Location
3445 EXECUTIVE CENTER DR
STE 250
AUSTIN, TX 787311678
Phone: (512) 579-4000
Fax: (512) 439-2814
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $58.
Total Amount is formed as General ($58) + Research ($0) + Ownership ($0) = $58.
Last reported payment date: 2024-04-24 • Largest payer in this snapshot: Astellas Pharma US Inc ($58).
Total Amount
$58
General + Research + Ownership
Payments
2
Total payment records
General Amount
$58
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Astellas Pharma US Inc | $58 |
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: 2021-04-27
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 |
|---|---|---|---|---|
| I20090226000564 | I | Pathology | CA | TBD |
| I20210427000794 | I | Pathology | TX | 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 | 486 | 287 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 174 | 46 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 147 | 81 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 90 | 64 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 52 | 43 | $0 |
Insurance plans in this area (ZIP 63110)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | MO | 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 84 | 74 |
| PATHOLOGY | MO | 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 172 | 75 |
| PATHOLOGY | MO | 88342 | Tissue or cell analysis by immunologic technique | 17 | 16 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| P A T H O L O G Y | CA | |
| - | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | KS | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA |
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