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MRS. SHARON GERTZ ROUILLARD N.P.
NPI 1154462323
Nurse Practitioner in San Ramon, CA

Active since February 09, 2007PECOS Enrolled
5601 NORRIS CANYON RD, STE 140, SAN RAMON, CA 94583(925) 830-0644(925) 830-0868 Get Directions Write a Review

NPPES record last updated: January 11, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Sharon Gertz Rouillard N.p. NPPES

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

MRS. SHARON GERTZ ROUILLARD N.P. (NPI 1154462323) is an individual nurse practitioner in San Ramon, California, licensed in California (17101) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154462323
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMRS. SHARON GERTZ ROUILLARDCredential: N.P.
Location Address5601 NORRIS CANYON RD, STE 140San Ramon, CA 94583-5407
Mailing Address5601 Norris Canyon Rd, Ste 140San Ramon, CA 94583-5407 · (925) 830-0644 · Fax (925) 830-0868
Phone(925) 830-0644
Fax(925) 830-0868
Sole ProprietorNo
Enumeration DateFebruary 9, 2007
Last NPPES UpdateJanuary 11, 2022
✔ NPI 1154462323 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CA · 17101
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedRegistered NurseTaxonomy 163W00000X · License 650324 (CA)
5601 NORRIS CANYON RD, San Ramon, CA 94583
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Other Names 1

Other Name (5)Ms. Sharon Beth Gertz Np

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Sharon Gertz Rouillard N.p. 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 Sharon Rouillard reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
25 mi
Internal Medicine
901 NEVIN
Richmond, CA 94801
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1235226531 (510) 307-1555

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 94583 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 20

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

DR. SADAF SAMIZAY M.D.
Obstetrics & Gynecology
5601 NORRIS CANYON RD
SAN RAMON, CA 94583
Contra Costa County (925) 587-4808
DR. FRANK CHI BING HSUEH M.D.
Internal Medicine
5601 NORRIS CANYON RD, STE 340
SAN RAMON, CA 94583
Contra Costa County (925) 786-5322
AENOR JANIEL SAWYER MD
Orthopaedic Surgery
5601 NORRIS CANYON RD, SUITE 100
SAN RAMON, CA 94583
Contra Costa County (925) 866-2660
INFECTIOUS DISEASE MEDICAL GROUP
Internal Medicine (Infectious Disease)
5601 NORRIS CANYON RD, SUITE 210
SAN RAMON, CA 94583
Contra Costa County (925) 867-3829
TSULING CHANG M.D.
Dermatology
5601 NORRIS CANYON RD
SAN RAMON, CA 94583
Contra Costa County (925) 866-6680
PERRY SOLOMON MD
Anesthesiology
5601 NORRIS CANYON RD, SUITE 240
SAN RAMON, CA 94583
Contra Costa County (925) 975-3353
DR. FREDERICK ANDERSON ROWE III M.D.
Internal Medicine (Gastroenterology)
5601 NORRIS CANYON RD, SUITE # 240
SAN RAMON, CA 94583
Contra Costa County (925) 901-1303
TSULING CHANG M.D. A PROFESSIONAL CORPORATION
Dermatology
5601 NORRIS CANYON RD
SAN RAMON, CA 94583
Contra Costa County (925) 866-6680

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 Sharon Rouillard's NPI number?

The NPI number for Sharon Rouillard is 1154462323. It was assigned to this individual provider in the NPPES registry on February 9, 2007. The provider is also known as Ms. Sharon Beth Gertz Np.

Where is Sharon Rouillard located?

Sharon Rouillard practices at 5601 Norris Canyon Rd Ste 140, San Ramon, CA 94583. The listed phone number is (925) 830-0644.

What is Sharon Rouillard's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Sharon Rouillard enrolled in Medicare?

Yes. Sharon Rouillard is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sharon Rouillard's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sharon Rouillard reassigns Medicare benefits to Permanente Medical Group Inc (Richmond, 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 Sharon Rouillard'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 Sharon Rouillard was last updated on January 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.