WILLIAM S ANAST (MD) – Anesthesiology Physician, NPI 1124024468
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,228 ANESTHESIOLOGY in MO
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Provider Addresses for WILLIAM S ANAST (MD)
Mercy, 1605, Martin Springs Drive, Rolla, Phelps County, Missouri, 65401, United States
ROLLA, MO 654012982
Phone: (417) 458-6637
Type: Location
PO BOX 2580
SPRINGFIELD, MO 658012580
Phone: (417) 829-4620
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 $37.
Total Amount is formed as General ($37) + Research ($0) + Ownership ($0) = $37.
Last reported payment date: 2024-10-23 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($37).
Total Amount
$37
General + Research + Ownership
Payments
2
Total payment records
General Amount
$37
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $37 |
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: 2004-07-21
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 |
|---|---|---|---|---|
| I20040721000001 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 119 | 109 | $0 |
| 00537 | Anesthesia for procedure to assess heart electrical activity | 57 | 55 | $0 |
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 55 | 55 | $0 |
| 00910 | Anesthesia for other procedure on urinary system through urethra | 51 | 48 | $0 |
| 36620 | Insertion of artery tube for blood sampling or infusion through skin | 42 | 42 | $0 |
Insurance plans in this area (ZIP 65401)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| A N E S T H E S I O L O G Y | KY | |
| Registered Dietitian Or Nutrition Professional | MO | |
| Nurse Practitioner | MO | |
| - | MO | |
| Certified Registered Nurse Anesthetist (Crna) | MO | |
| Nurse Practitioner | MO | |
| - | MO | |
| Certified Registered Nurse Anesthetist (Crna) | IL | |
| - | MO | |
| O B S T E T R I C S/ G Y N E C O L O G Y | AR |
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