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CECILIA KAESLER, D.O., INC.
NPI 1659670784
Internal Medicine in La Canada, CA

Active since March 15, 2011
1113 FOOTHILL BLVD, SUITE A, LA CANADA, CA 91011(818) 790-0357 Get Directions Write a Review

NPPES record last updated: June 20, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Cecilia Kaesler, D.o., Inc. NPPES

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

CECILIA KAESLER, D.O., INC. (NPI 1659670784) is a healthcare organization registered as an internal medicine in La Canada, California and active in the NPI registry since March 2011. The organization lists Cecilia Tsang Kaesler, President, as its authorized official.

NPPES Registry Identity

NPI1659670784
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameCECILIA KAESLER, D.O., INC.
Location Address1113 FOOTHILL BLVD, SUITE ALa Canada, CA 91011-3207
Mailing Address1113 Foothill Blvd, Suite ALa Canada, CA 91011 · (818) 790-0357
Phone(818) 790-0357
Organization SubpartNo
Authorized OfficialCecilia Tsang KaeslerPresident · (818) 790-0357
Enumeration DateMarch 15, 2011
Last NPPES UpdateJune 20, 2018
✔ NPI 1659670784 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A6257
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.
1113 FOOTHILL BLVD, La Canada, CA 91011
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Other Identifiers 2

Other20A6257CA · Medical License
Other1326092891Npi

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cecilia Kaesler, D.o., Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20110928000668Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Cecilia Kaesler, D.O., Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Cecilia Kaesler, DO
Internal Medicine
NPI 1326092891
1113 FOOTHILL BLVD SUITE A
La Canada, CA 91011
(818) 790-0357
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Cecilia Kaesler, D.O., Inc.'s NPI number?

The NPI number for Cecilia Kaesler, D.O., Inc. is 1659670784. It was assigned to this organization in the NPPES registry on March 15, 2011.

Where is Cecilia Kaesler, D.O., Inc. located?

Cecilia Kaesler, D.O., Inc. is located at 1113 Foothill Blvd Suite A, La Canada, CA 91011. The listed phone number is (818) 790-0357.

What is Cecilia Kaesler, D.O., Inc.'s specialty?

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

Is Cecilia Kaesler, D.O., Inc. enrolled in Medicare?

Yes. Cecilia Kaesler, D.O., Inc. is registered in the Medicare PECOS enrollment system.

When is Cecilia Kaesler, D.O., Inc.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Cecilia Kaesler, D.O., Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Cecilia Kaesler, D.O., Inc.. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Cecilia Kaesler, D.O., Inc. was last updated on June 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.