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DR. KARISA THAYER M.D.
NPI 1558765941
Internal Medicine in Gardena, CA

Active since October 14, 2014PECOS EnrolledAccepts Medicare Assignment
742 W GARDENA BLVD, GARDENA, CA 90247(310) 327-1357 Get Directions Write a Review

NPPES record last updated: November 17, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 17, 2022, Mar 5, 2020 (2 updates tracked since 2020).

About Dr. Karisa Thayer M.d. NPPES

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

DR. KARISA THAYER M.D. (NPI 1558765941) is an individual internal medicine provider in Gardena, California, licensed in California (A140754) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (2014).

NPPES Registry Identity

NPI1558765941
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. KARISA THAYERCredential: M.D.
Location Address742 W GARDENA BLVDGardena, CA 90247-5024
Mailing Address742 W Gardena BlvdGardena, CA 90247-5024 · (310) 327-1357
Phone(310) 327-1357
Sole ProprietorYes
Medical School CMSLoma Linda University School Of MedicineGraduated 2014
Enumeration DateOctober 14, 2014
Last NPPES UpdateNovember 17, 20222 updates tracked since enumeration
NPPES CertifiedNovember 17, 2022
✔ NPI 1558765941 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A140754
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X · License A140754 (CA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
742 W GARDENA BLVD, Gardena, CA 90247
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Other Identifiers 1

MedicaidKA3232267556).CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Karisa Thayer M.d. 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 ID2961821004
PECOS Enrollment IDI20240625003313
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 Karisa Thayer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Centro De Salud De La Comunidad De San Ysidro, Inc.
75 mi
Program of All-Inclusive Care for the Elderly (PACE) Provider Organization
1840 WEST DR
Vista, CA 92083
  • Reassigned Medicare billing, California enrollment
  • 577 clinicians in this Medicare group
NPI 1124793732 (619) 662-4100

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 90247 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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.

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.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers11 claims31 services$6.57 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 12

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

GOURI PILLAI MD
Pediatrics
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 802-6177
VENICE FAMILY CLINIC
Clinic/Center (Federally Qualified Health Center (FQHC))
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 802-6177
MS. GAIL GABOUREL MSPA-C
Internal Medicine
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 327-1357
KATELYN HOPE ANDERSON KLEIN
Internal Medicine
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 392-8636
KELSEY BREIG
Nurse Practitioner (Family)
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 327-1357
LORNA OCAMPO-TATEL NP
Nurse Practitioner
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 392-8636
JUDITH PIETERSZ NP
Nurse Practitioner
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 802-6177
WILFREDO RIOS
Nurse Practitioner (Family)
742 W GARDENA BLVD
GARDENA, CA 90247
Los Angeles County (310) 392-8636

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 Karisa Thayer's NPI number?

The NPI number for Karisa Thayer is 1558765941. It was assigned to this individual provider in the NPPES registry on October 14, 2014.

Where is Karisa Thayer located?

Karisa Thayer practices at 742 W Gardena Blvd, Gardena, CA 90247. The listed phone number is (310) 327-1357.

What is Karisa Thayer's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Karisa Thayer enrolled in Medicare?

Yes. Karisa Thayer 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.

Which organization bills Medicare for Karisa Thayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karisa Thayer reassigns Medicare benefits to Centro De Salud De La Comunidad De San Ysidro, Inc. (Vista, 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 Karisa Thayer'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 Karisa Thayer was last updated on November 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.