DR. ALEXANDER GEORGE CHAMESSIAN (MD PHD) – Physical Medicine & Rehabilitation Physician, NPI 1275194839
Physical Medicine & Rehabilitation Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,228 ANESTHESIOLOGY in MO
Provider Addresses for DR. ALEXANDER GEORGE CHAMESSIAN (MD PHD)
12380 DePaul Drive
Bridgeton, MO 63044
Phone: (314) 447-9812
Type: Location
1 BARNES JEW HOSP PLZ
SAINT LOUIS, MO 631101003
Phone: (314) 362-5000
Type: Location
660, South Euclid Avenue, Central West End, City of Saint Louis, Missouri, 63110, United States
SAINT LOUIS, MO 631101010
Phone: (314) 362-5000
Type: Mailing
PO BOX 7412011
CHICAGO, IL 606742011
Phone: (314) 996-8631
Fax: (314) 996-8742
Type: Mailing
1044 N MASON RD
DEPT ANESTHESIOLOGY, STE L30
CREVE COEUR, MO 631416431
Phone: (314) 996-8631
Fax: (314) 996-8742
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 42 Open Payments records for all available years, with a total value of $20,118.
Total Amount is formed as General ($20,118) + Research ($0) + Ownership ($0) = $20,118.
Last reported payment date: 2024-11-13 • Largest payer in this snapshot: Boston Scientific Corporation ($11,785).
Total Amount
$20,118
General + Research + Ownership
Payments
42
Total payment records
General Amount
$20,118
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boston Scientific Corporation | $11,785 |
| Medtronic, Inc. | $5,204 |
| Abbott Laboratories | $2,587 |
| Nalu Medical, Inc. | $175 |
| SPR Therapeutics, Inc | $153 |
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: 2024-07-12
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 |
|---|---|---|---|---|
| I20240712000205 | I | Anesthesiology | MO | 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 63044)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | MO | |
| - | MO | |
| - | FL | |
| - | MO | |
| Diagnostic Radiology | IL | |
| - | IL | |
| - | MO | |
| - | MO | |
| - | MO | |
| - | MO |
Reviews
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