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SOPHIA STEWART NP
NPI 1518355411
Nurse Practitioner - Family in Oakland, CA

Active since December 30, 2014PECOS Enrolled
3100 SUMMIT ST, OAKLAND, CA 94609(510) 204-3410(510) 204-3411 Get Directions Write a Review

NPPES record last updated: August 27, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 27, 2020, Jan 14, 2020, Oct 4, 2018 and 1 more (4 updates tracked since 2016).

About Sophia Stewart Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SOPHIA STEWART NP (NPI 1518355411) is an individual family provider in Oakland, California, licensed in California (95001969) and active in the NPI registry since December 2014. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1518355411
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameSOPHIA STEWARTCredential: NP
Location Address3100 SUMMIT STOakland, CA 94609-3412
Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 204-3410 · Fax (510) 204-3411
Phone(510) 204-3410
Fax(510) 204-3411
Sole ProprietorNo
Enumeration DateDecember 30, 2014
Last NPPES UpdateAugust 27, 20204 updates tracked since enumeration
NPPES CertifiedAugust 27, 2020
✔ NPI 1518355411 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 95001969
Also ListedRegistered NurseTaxonomy 163W00000X · License 836095 (CA)
3100 SUMMIT ST, Oakland, CA 94609
Open in Google Maps ↗

Secondary Practice Locations 3

Location 14100 Redwood Rd, # 328Oakland, CA 94619-2363 · Phone (530) 368-1963
Location 2450 Park St Ste 100BAlameda, CA 94501 · Phone (510) 992-3104
Location 35994 W Las Positas Blvd # 221Pleasanton, CA 94588-8509 · Phone (510) 560-2012

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sophia Stewart Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Sophia Stewart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Provider Profile
4.5 mi
Family Medicine
450 PARK ST, SUITE 100B
Alameda, CA 94501
  • Reassigned Medicare billing, California enrollment
NPI 1700999844 (510) 992-3104
Sutter Bay Medical Foundation
6.0 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes 99350
An established patient home visit is a service where a healthcare professional visits a patient's home for a check-up or treatment. The visit typically lasts for about an hour. This service is especially beneficial for patients who may have difficulty traveling to a healthcare facility.
114 services42 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
87 services48 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
65 services22 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
30 services17 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
17 services17 patients
Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes 99345
A new patient home visit is a comprehensive 75-minute appointment conducted at your home. The healthcare professional will assess your health, discuss any concerns, and create a personalized care plan. It's convenient, comfortable, and tailored to your specific needs.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94609 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Nebulizer, with compressor E0570
DME-Other DME · category DE000N
1 supplier11 claims11 services$3.17 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier11 claims11 services$69.12 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOANNA VIOLET ESPLANA DE MESA NP-C
Nurse Practitioner (Family)
3100 SUMMIT ST
OAKLAND, CA 94609
Alameda County (510) 869-8865
CATHERINE D TANNER FNP
Nurse Practitioner (Family)
3100 SUMMIT ST, THIRD FLOOR, SUITE 3206
OAKLAND, CA 94609
Alameda County (510) 869-6511
KIM SEAY RD
Dietitian, Registered
3100 SUMMIT ST
OAKLAND, CA 94609
Alameda County (510) 655-4000
ALYSSA RELOS
Nurse Practitioner (Primary Care)
3100 SUMMIT ST
OAKLAND, CA 94609
Alameda County (510) 869-8865
RAFFI A BASHLIAN ANP
Nurse Practitioner (Adult Health)
3100 SUMMIT ST, 2ND FLOOR, EAST BAY AIDS CENTER (EBAC)
OAKLAND, CA 94609
Alameda County (510) 869-8400
DR. HERBERT ARTHUR HOLMAN MD
Dermatology
3100 SUMMIT ST, FL 2
OAKLAND, CA 94609
Alameda County (510) 869-8400
ELISABETH ANNE SHERRATT FNP
Nurse Practitioner (Family)
3100 SUMMIT ST, 2ND FLOOR, SUITE 2549
OAKLAND, CA 94609
Alameda County (510) 869-8865
TASHI SCHAAF RN, FNP
Nurse Practitioner
3100 SUMMIT ST, 2ND FLOOR, SUITE 2549
OAKLAND, CA 94609
Alameda County (510) 869-8865

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 Sophia Stewart's NPI number?

The NPI number for Sophia Stewart is 1518355411. It was assigned to this individual provider in the NPPES registry on December 30, 2014.

Where is Sophia Stewart located?

Sophia Stewart practices at 3100 Summit St, Oakland, CA 94609. The listed phone number is (510) 204-3410.

What is Sophia Stewart's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Sophia Stewart enrolled in Medicare?

Yes. Sophia Stewart is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Sophia Stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sophia Stewart reassigns Medicare benefits to 2 organizations: (Alameda, CA) and Sutter Bay Medical Foundation (Orinda, CA). 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 Sophia Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sophia Stewart was last updated on August 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.