DR. ZAW WIN LWIN (M.D.) – Internal Medicine Physician, NPI 1437257912
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for DR. ZAW WIN LWIN (M.D.)
555 Anton Blvd Ste 150
Costa Mesa, CA 926267036
Phone: (949) 996-3394
Fax: (949) 996-3321
Type: Location
5850 S MAIN ST
LOS ANGELES, CA 900031215
Phone: (213) 200-2353
Fax: (213) 289-1244
Type: Mailing
420, South Glendora Avenue, West Covina, Los Angeles County, California, 91790, United States
WEST COVINA, CA 917903001
Phone: (626) 919-4333
Fax: (626) 919-8503
Type: Mailing
680, Fairplex Drive, Pomona, Los Angeles County, California, 91768, United States
POMONA, CA 917681100
Phone: (626) 919-4333
Fax: (626) 919-8503
Type: Location
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: 2011-05-05
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 |
|---|---|---|---|---|
| I20110505000819 | I | Internal Medicine | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 318 | 171 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 225 | 144 | $0 |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | 58 | 46 | $0 |
| 83036 | Hemoglobin a1c level | 35 | 34 | $0 |
| 80061 | Blood test, lipids (cholesterol and triglycerides) | 26 | 25 | $0 |
Insurance plans in this area (ZIP 92626)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| Nurse Practitioner | CA | |
| - | CA | |
| - | CA | |
| P O D I A T R Y | CA | |
| - | CA |
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