MALLORY LANGELL SIEVERS (PA-C) – Physician Assistant, NPI 1902379548
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
10,570 PHYSICIAN ASSISTANT in CA
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Provider Addresses for MALLORY LANGELL SIEVERS (PA-C)
West 190th Street, Harbor Gateway, Torrance, Los Angeles County, California, 90278, United States
TORRANCE, CA 905045513
Phone: (661) 803-3654
Type: Mailing
28253, Branch Road, Castaic, Los Angeles County, California, 91384, United States
CASTAIC, CA 913843005
Phone: (661) 803-3654
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: 2019-09-10
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 |
|---|---|---|---|---|
| I20190910003187 | I | Physician Assistant | 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 | 79 | 79 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 26 | 26 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 14 | 14 | $0 |
| 81002 | Urinalysis, manual test | 14 | 14 | $0 |
Insurance plans in this area (ZIP 90504)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P A T H O L O G Y | NY | |
| A N E S T H E S I O L O G Y | NV | |
| - | CA | |
| - | CA | |
| - | CA | |
| H O S P I T A L I S T | CA | |
| Infectious Disease | CA | |
| Plastic And Reconstructive Surgery | CA | |
| Physical Therapist In Private Practice | CA | |
| Hospitalist, Internal Medicine | CA |
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