JOAN T SASAKI (M.D.) – Obstetrics & Gynecology Physician, NPI 1013940535
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,008 OBSTETRICS/GYNECOLOGY in CA
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Provider Addresses for JOAN T SASAKI (M.D.)
Mission Viejo, Orange County, California, United States
SUITE 212
MISSION VIEJO, CA 926916329
Phone: (949) 441-5556
Fax: (949) 348-2523
Mailing address matches the actual address.
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 $52.
Total Amount is formed as General ($52) + Research ($0) + Ownership ($0) = $52.
Last reported payment date: 2024-06-26 • Largest payer in this snapshot: Organon LLC ($30).
Total Amount
$52
General + Research + Ownership
Payments
2
Total payment records
General Amount
$52
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Organon LLC | $30 |
| ABBVIE INC. | $22 |
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: 2006-08-16
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 |
|---|---|---|---|---|
| I20060816000509 | I | Obstetrics/Gynecology | 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 | 59 | 59 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 34 | 32 | $0 |
| Q0091 | Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | 17 | 17 | $0 |
| 82270 | Stool analysis for blood to screen for colon tumors | 12 | 12 | $0 |
Insurance plans in this area (ZIP 92691)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | NJ | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | CA | |
| - | WA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OH | |
| Diagnostic Radiology | CA | |
| - | CA |
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