JAMES WILLIS SIMMONS II NP
NPI 1366744492
Nurse Practitioner - Family in Redwood City, CA

Active since November 22, 2010PECOS EnrolledAccepts Medicare Assignment
830 JEFFERSON AVE, REDWOOD CITY, CA 94063(650) 380-0616 Get Directions Write a Review

NPPES record last updated: January 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 16, 2026, Jan 3, 2026, Sep 17, 2025 (3 updates tracked since 2025).

About James Willis Simmons Ii Np NPPES

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

JAMES WILLIS SIMMONS II NP (NPI 1366744492) is an individual family provider in Redwood City, California, licensed in California (NP19879) and active in the NPI registry since November 2010. He is enrolled in Medicare PECOS, maintains a secondary practice location in Modesto, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1366744492
Entity TypeIndividualMale
Primary Taxonomy363LF0000X
Provider Legal NameJAMES WILLIS SIMMONS IICredential: NP
Location Address830 JEFFERSON AVERedwood City, CA 94063-1804
Mailing Address4405 Wincanton RdSalida, CA 95368-9715 · (209) 482-6840
Sole ProprietorYes
Medical School CMSOtherGraduated 2010
Enumeration DateNovember 22, 2010
Last NPPES UpdateJanuary 16, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 16, 2026
NPI 1366744492 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in CA · NP19879
830 JEFFERSON AVE, Redwood City, CA 94063

Secondary Practice Location 1

Location 1103 Modesto AveModesto, CA 95354-0414 · Phone (209) 527-4597

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

James Willis Simmons Ii Np 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.

PECOS PAC ID6002093341
PECOS Enrollment IDI20110614000168
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.

Areas of Expertise CMS Part B claims 3

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
100 services38 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
36 services34 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
32 services29 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94063 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

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

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 supplier17 claims17 services$61.98 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 2

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

Physician Assistant
830 JEFFERSON AVE
REDWOOD CITY, CA 94063
Emergency Medicine
830 JEFFERSON AVE
REDWOOD CITY, CA 94063

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 James Simmons's NPI number?

The NPI number for James Simmons is 1366744492. It was assigned to this individual provider in the NPPES registry on November 22, 2010.

Where is James Simmons located?

James Simmons practices at 830 Jefferson Ave, Redwood City, CA 94063. The listed phone number is (650) 380-0616.

What is James Simmons's specialty?

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

Is James Simmons enrolled in Medicare?

Yes. James Simmons 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.

When was this NPI record last updated?

The NPPES record for James Simmons was last updated on January 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.