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MRS. DELISA SIMON RN, BSN, MSN, NP-C
NPI 1851800056
Nurse Practitioner - Family in Livermore, CA

Active since September 20, 2017PECOS Enrolled
87 FENTON ST STE 210, LIVERMORE, CA 94550(925) 371-8885(925) 371-8884 Get Directions Write a Review

NPPES record last updated: June 23, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 20, 2024, Jul 11, 2018, Sep 20, 2017 (3 updates tracked since 2017).

About Mrs. Delisa Simon Rn, Bsn, Msn, Np-c NPPES

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

MRS. DELISA SIMON RN, BSN, MSN, NP-C (NPI 1851800056) is an individual family provider in Livermore, California, licensed in California (95004200) and active in the NPI registry since September 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1851800056
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. DELISA SIMONCredential: RN, BSN, MSN, NP-C
Location Address87 FENTON ST STE 210Livermore, CA 94550-4159
Mailing Address87 Fenton St Ste 210Livermore, CA 94550-4159 · (925) 371-8885 · Fax (925) 371-8884
Phone(925) 371-8885
Fax(925) 371-8884
Sole ProprietorNo
Enumeration DateSeptember 20, 2017
Last NPPES UpdateJune 23, 20263 updates tracked since enumeration
NPPES CertifiedJune 23, 2026
✔ NPI 1851800056 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 · 95004200
87 FENTON ST STE 210, Livermore, CA 94550
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Delisa Simon Rn, Bsn, Msn, Np-c 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 Reassignment

Medicare enrollment records show Delisa Simon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Tri-Valley Medical Associates, Inc.
Same address
Internal Medicine
87 FENTON ST STE 210
Livermore, CA 94550
  • Reassigned Medicare billing, California enrollment
  • 7 clinicians in this Medicare group
NPI 1801047931 (925) 371-8885

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 94550 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.

Other Providers at the Same Location NPPES 5

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

ADVANCED SLEEP AND PULMOMARY SERVICES INC
Internal Medicine (Pulmonary Disease)
87 FENTON ST STE 210
LIVERMORE, CA 94550
Alameda County (925) 434-5144
TSUNG PETER WONG MD
Family Medicine
87 FENTON ST STE 210
LIVERMORE, CA 94550
Alameda County (925) 371-8885
FRANK LIN MD
Family Medicine
87 FENTON ST STE 210
LIVERMORE, CA 94550
Alameda County (925) 371-8885
ADVANCED SLEEP & PULMONARY SERVICES, INC
Internal Medicine (Pulmonary Disease)
87 FENTON ST STE 210
LIVERMORE, CA 94550
Alameda County (925) 434-5144
TRI-VALLEY MEDICAL ASSOCIATES, INC.
Internal Medicine
87 FENTON ST STE 210
LIVERMORE, CA 94550
Alameda County (925) 371-8885

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 Delisa Simon's NPI number?

The NPI number for Delisa Simon is 1851800056. It was assigned to this individual provider in the NPPES registry on September 20, 2017.

Where is Delisa Simon located?

Delisa Simon practices at 87 Fenton St Ste 210, Livermore, CA 94550. The listed phone number is (925) 371-8885.

What is Delisa Simon's specialty?

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

Is Delisa Simon enrolled in Medicare?

Yes. Delisa Simon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Delisa Simon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Delisa Simon reassigns Medicare benefits to Tri-Valley Medical Associates, Inc. (Livermore, CA). The 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 Delisa Simon'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 Delisa Simon was last updated on June 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.