DR. NYUNT LWIN (M.D.) – Anesthesiology Physician, NPI 1699781187
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,371 ANESTHESIOLOGY in CA
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Provider Addresses for DR. NYUNT LWIN (M.D.)
Four Seasons Surgery Centers, 1211, West 6th Street, Ontario, San Bernardino County, California, 91762, United States
ONTARIO, CA 917621103
Phone: (909) 626-9922
Fax: (909) 399-9494
Type: Location
2646, Wagon Train Lane, Diamond Bar, Los Angeles County, California, 91765, United States
DIAMOND BAR, CA 917653646
Phone: (909) 626-9922
Fax: (909) 399-9494
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2004-03-25
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 |
|---|---|---|---|---|
| I20040325001747 | I | Anesthesiology | CA | 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 91762)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| - | CO | |
| Internal Medicine, Hospitalist | WV | |
| - | NM | |
| Hospitalist, Osteopathic Manipulative Medicine, Family Practice | CO | |
| - | CO | |
| Cardiovascular Disease (Cardiology) | TX | |
| General Surgery | TN | |
| Diagnostic Radiology | CA |
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