MR. STEVEN LLOYD MCMASTER (PA-C) – Physician Assistant, NPI 1396844841
Physician Assistant
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for MR. STEVEN LLOYD MCMASTER (PA-C)
10452 Silverdale Way NW
Silverdale, WA 983839411
Phone: (360) 307-7300
Fax: (360) 307-7304
Type: Location
2 Embarcadero Ctr Lbby Level
San Francisco, CA 941113823
Phone: (888) 663-6331
Fax: (415) 252-7176
Type: Location
Healthcare Partners, 2600, Redondo Avenue, Long Beach, Los Angeles County, California, 90806, United States
LONG BEACH, CA 908062325
Phone: (562) 988-7000
Type: Location
5911, East Spring Street, Los Altos, Long Beach, Los Angeles County, California, 90808, United States
#541
LONG BEACH, CA 908083752
Phone: (562) 234-8959
Type: Mailing
1 EMBARCADERO CTR STE 1900
SAN FRANCISCO, CA 941113723
Phone: (415) 658-6791
Type: Mailing
450 S KITSAP BLVD STE 2120
PORT ORCHARD, WA 983663773
Phone: (360) 744-6275
Fax: (360) 782-3115
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: 2018-02-20
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20070509000346 | I | Physician Assistant | CA | TBD |
| I20180220002799 | I | Physician Assistant | WA | 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 98383)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | SC | |
| Physician Assistant | WA | |
| - | WA | |
| General Surgery | MI | |
| - | WA | |
| Nurse Practitioner | WA | |
| - | WI | |
| - | WA | |
| - | WA | |
| Family Practice | WA |
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