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MS. LYNN KEITZ FNP-C
NPI 1699231621
Nurse Practitioner - Family in Signal Hill, CA

Active since February 14, 2019PECOS Enrolled
2855 TEMPLE AVE STE B, SIGNAL HILL, CA 90755(562) 426-7500(562) 424-9588 Get Directions Write a Review

NPPES record last updated: April 2, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 2, 2026, Feb 14, 2019 (2 updates tracked since 2019).

About Ms. Lynn Keitz Fnp-c NPPES

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

MS. LYNN KEITZ FNP-C (NPI 1699231621) is an individual family provider in Signal Hill, California, licensed in California (95009387) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1699231621
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMS. LYNN KEITZCredential: FNP-C
Location Address2855 TEMPLE AVE STE BSignal Hill, CA 90755-2212
Mailing Address21 Carmel Bay DrCorona Del Mar, CA 92625-1006 · (562) 755-7200
Phone(562) 426-7500
Fax(562) 424-9588
Sole ProprietorNo
Enumeration DateFebruary 14, 2019
Last NPPES UpdateApril 2, 20262 updates tracked since enumeration
NPPES CertifiedApril 2, 2026
✔ NPI 1699231621 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 · 95009387
2855 TEMPLE AVE STE B, Signal Hill, CA 90755
Open in Google Maps ↗

Other Names 1

Former Name (1)Ms. Lynn Santillo Rn

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Lynn Keitz Fnp-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 Reassignments

2

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

Ab Safe Haven Palliative & Hospice Care, Inc.
Same address
Hospice Care, Community Based
2855 TEMPLE AVE STE B
Signal Hill, CA 90755
  • Reassigned Medicare billing, California enrollment
  • 7 clinicians in this Medicare group
NPI 1669764726 (562) 426-7500
Lynda Lopez-Freyre Fnp-C Professional Nursing Corporation
5.9 mi
Nurse Practitioner
424 BERYL COVE WAY
Seal Beach, CA 90740
  • Reassigned Medicare billing, California enrollment
  • 3 clinicians in this Medicare group
NPI 1720849276 (562) 852-3758

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 90755 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 7

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

FARIDEH FARID BAHRAMI RNP
Nurse Practitioner
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500
MARIA DE JESUS CABRALES NP
Nurse Practitioner (Family)
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500
MS. NAMTRAN NGUYEN TA AGNP
Nurse Practitioner (Gerontology)
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500
MARY KHRISTEEN J ISIDRO NP
Nurse Practitioner (Adult Health)
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500
AB SAFE HAVEN PALLIATIVE & HOSPICE CARE, INC.
Hospice Care, Community Based
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500
MS. GLADYS CASILLAS NP
Nurse Practitioner
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500
MRS. MARIEN GUADALUPE ZAVALA AGAC-NP
Nurse Practitioner
2855 TEMPLE AVE STE B
SIGNAL HILL, CA 90755
Los Angeles County (562) 426-7500

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 Lynn Keitz's NPI number?

The NPI number for Lynn Keitz is 1699231621. It was assigned to this individual provider in the NPPES registry on February 14, 2019. The provider is also known as Ms. Lynn Santillo Rn.

Where is Lynn Keitz located?

Lynn Keitz practices at 2855 Temple Ave Ste B, Signal Hill, CA 90755. The listed phone number is (562) 426-7500.

What is Lynn Keitz's specialty?

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

Is Lynn Keitz enrolled in Medicare?

Yes. Lynn Keitz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Lynn Keitz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lynn Keitz reassigns Medicare benefits to 2 organizations: Ab Safe Haven Palliative & Hospice Care, Inc. (Signal Hill, CA) and Lynda Lopez-Freyre Fnp-C Professional Nursing Corporation (Seal Beach, 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 Lynn Keitz'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 Lynn Keitz was last updated on April 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.