1. Home
  2. Directory
  3. California
  4. Larkspur
  5. Pediatrics
  6. NPI Profile

RIM ELCHAKI M.D.
NPI 1225415714
Pediatrics - Pediatric Nephrology in Larkspur, CA

Active since May 04, 2015PECOS EnrolledAccepts Medicare Assignment
1100 LARKSPUR LANDING CIR, SUITE 10, LARKSPUR, CA 94939(415) 464-1350 Get Directions Write a Review

NPPES record last updated: September 9, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 9, 2022, Aug 26, 2022 (2 updates tracked since 2022).

About Rim Elchaki M.d. NPPES

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

RIM ELCHAKI M.D. (NPI 1225415714) is an individual pediatric nephrology provider in Larkspur, California, licensed in California (A154545) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1225415714
Entity TypeIndividualFemale
Primary Taxonomy2080P0210X
Provider Legal NameRIM ELCHAKICredential: M.D.
Location Address1100 LARKSPUR LANDING CIR, SUITE 10Larkspur, CA 94939
Mailing Address1721 Andover WayPetaluma, CA 94954 · (310) 592-9304
Phone(415) 464-1350
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateMay 4, 2015
Last NPPES UpdateSeptember 9, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2022
✔ NPI 1225415714 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0210X
License✔ Licensed in CA · A154545
Definition
A pediatrician who deals with the normal and abnormal development and maturation of the kidney and urinary tract, the mechanisms by which the kidney can be damaged, the evaluation and treatment of renal diseases, fluid and electrolyte abnormalities, hypertension and renal replacement therapy.
Also ListedPediatricsTaxonomy 208000000X · License A154454 (CA)
1100 LARKSPUR LANDING CIR, Larkspur, CA 94939
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 and accepts Medicare assignment

Rim Elchaki 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 ID547645624
PECOS Enrollment IDI20220912000775
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

3

Medicare enrollment records show Rim Elchaki reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Medical Group Business Services
13 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
University Of California San Francisco
13 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1164512851 (415) 476-1000
Ucsf Pediatrics Associates
13 mi
Pediatrics
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 1,159 clinicians in this Medicare group
NPI 1376614016 (415) 353-2000

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 Rim Elchaki's NPI number?

The NPI number for Rim Elchaki is 1225415714. It was assigned to this individual provider in the NPPES registry on May 4, 2015.

Where is Rim Elchaki located?

Rim Elchaki practices at 1100 Larkspur Landing Cir Suite 10, Larkspur, CA 94939. The listed phone number is (415) 464-1350.

What is Rim Elchaki's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.

Is Rim Elchaki enrolled in Medicare?

Yes. Rim Elchaki 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 organizations bill Medicare for Rim Elchaki's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rim Elchaki reassigns Medicare benefits to 3 organizations: Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Pediatrics Associates (San Francisco, 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 Rim Elchaki'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 Rim Elchaki was last updated on September 9, 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.