MEREDITH ELLEN RIKER
NPI 1922639293
Nurse Practitioner - Pediatrics in San Francisco, CA
About Meredith Ellen Riker NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MEREDITH ELLEN RIKER (NPI 1922639293) is an individual pediatrics provider in San Francisco, California, licensed in Washington (AP61014368) and active in the NPI registry since January 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Meredith Ellen Riker is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Meredith Riker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Richland, WA 99352
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: The Association Of Chrmc And University Physicians
- 1,443 clinicians in this Medicare group
Seattle, WA 98118
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: Seattle Childrens Hospital
- 912 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Meredith Riker's NPI number?
The NPI number for Meredith Riker is 1922639293. It was assigned to this individual provider in the NPPES registry on January 27, 2020.
Where is Meredith Riker located?
Meredith Riker practices at 122A Highland Ave, San Francisco, CA 94110. The listed phone number is (207) 831-3266.
What is Meredith Riker's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Meredith Riker enrolled in Medicare?
Yes. Meredith Riker is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Meredith Riker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Meredith Riker reassigns Medicare benefits to 2 organizations: Association Of Chmc And University Physicians (Richland, WA) and Seattle Children's Hospital (Seattle, WA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Meredith Riker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Meredith Riker accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Meredith Riker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Meredith Riker was last updated on January 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Meredith Ellen Riker · NPI 1922639293
Pediatrics physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since January 27, 2020.
## Identity
- **NPI:** 1922639293 (Entity type: Individual)
- **Enumerated:** January 27, 2020
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** AP61014368 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 122A HIGHLAND AVE, San Francisco, CA 94110-5811
- **Phone:** (207) 831-3266
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Association Of Chmc And University Physicians (NPI 1851680664, Richland, WA); Seattle Children's Hospital (NPI 1134251747, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** January 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1922639293) · Data from the CMS NPPES public registry.