DR. PORTIA SIWAWA (MD) – Surgery Physician, NPI 1215220488
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,092 GENERAL SURGERY in GA
Provider Addresses for DR. PORTIA SIWAWA (MD)
1400 S COULTER ST
AMARILLO, TX 791061786
Phone: (806) 354-5417
Type: Mailing
11 UPPER RIVERDALE RD SW
RIVERDALE, GA 302742615
Phone: (770) 897-7043
Fax: (770) 996-3941
Type: Location
1301 SIGMAN RD NE STE 200
CONYERS, GA 300123819
Phone: (678) 806-3340
Type: Mailing
1218 W PACES FERRY RD NW STE 204
ATLANTA, GA 303272308
Phone: (404) 285-2289
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $194.
Total Amount is formed as General ($194) + Research ($0) + Ownership ($0) = $194.
Last reported payment date: 2023-05-08 • Largest payer in this snapshot: ABBVIE INC. ($148).
Total Amount
$194
General + Research + Ownership
Payments
3
Total payment records
General Amount
$194
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-05-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $148 |
| Hologic Sales and Service, LLC | $46 |
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: 2019-07-29
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 |
|---|---|---|---|---|
| I20190729003662 | I | General Surgery | GA | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 32 | 28 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 26 | 18 | $0 |
| G0279 | Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 18 | 17 | $0 |
| 76641 | Complete ultrasound scan of 1 breast | 14 | 12 | $0 |
| 77063 | Screening 3d breast mammography | 13 | 13 | $0 |
Insurance plans in this area (ZIP 79106)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | GA | |
| Internal Medicine | GA | |
| General Surgery | KY | |
| General Surgery | GA | |
| Family Practice | GA | |
| Family Practice | GA | |
| Internal Medicine, Emergency Medicine | GA | |
| Internal Medicine | MA | |
| - | GA | |
| - | SC |
Reviews
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