1. Home
  2. Directory
  3. California
  4. San Rafael
  5. Social Worker
  6. NPI Profile

MS. MARISOL C KOORHAN
NPI 1326520446
Social Worker - Clinical in San Rafael, CA

Active since September 05, 2018PECOS Enrolled
3110 KERNER BLVD, SAN RAFAEL, CA 94901(415) 448-1500 Get Directions Write a Review

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

Record update history: Aug 11, 2022, Sep 5, 2018 (2 updates tracked since 2018).

About Ms. Marisol C Koorhan NPPES

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

MS. MARISOL C KOORHAN (NPI 1326520446) is an individual clinical provider in San Rafael, California and active in the NPI registry since September 2018. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1326520446
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. MARISOL C KOORHAN
Location Address3110 KERNER BLVDSan Rafael, CA 94901-5411
Mailing Address1841 Park AveNew York, NY 10035-1316
Phone(415) 448-1500
Sole ProprietorNo
Enumeration DateSeptember 5, 2018
Last NPPES UpdateAugust 11, 20222 updates tracked since enumeration
NPPES CertifiedAugust 11, 2022
✔ NPI 1326520446 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
3110 KERNER BLVD, San Rafael, CA 94901
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 (PECOS)

Ms. Marisol C Koorhan 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 Marisol Koorhan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
7.7 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 94901 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
$0.00 typical visit price
range $69.07 – $202.63
Typical copayment $0.00 (range $17.26 – $50.65)
Most-billed visit code NA
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
Most-billed visit code 99213
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.

EUNKYO CHO DDS
Dentist (General Practice)
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 448-1500
EMMELINE LUI RDH
Dental Hygienist
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 448-1500
ALEXANDER DE JESUS CHAVARRIA
Social Worker (Clinical)
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 448-1500
DR. MARISSA WANG DMD
Dentist (General Practice)
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (626) 297-0068
JOANNA GOBEA FNP
Nurse Practitioner (Family)
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 755-2507
DR. PETER JOHN SIMON M.D.
Pediatrics
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 448-1500
ABIGAIL PEREZ ACSW
Social Worker (Clinical)
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 448-1500
MARIN COMMUNITY CLINIC
Clinic/Center (Federally Qualified Health Center (FQHC))
3110 KERNER BLVD
SAN RAFAEL, CA 94901
Marin County (415) 526-8500

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 Marisol Koorhan's NPI number?

The NPI number for Marisol Koorhan is 1326520446. It was assigned to this individual provider in the NPPES registry on September 5, 2018.

Where is Marisol Koorhan located?

Marisol Koorhan practices at 3110 Kerner Blvd, San Rafael, CA 94901. The listed phone number is (415) 448-1500.

What is Marisol Koorhan's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Marisol Koorhan enrolled in Medicare?

Yes. Marisol Koorhan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Marisol Koorhan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marisol Koorhan 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 Marisol Koorhan'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 Marisol Koorhan was last updated on August 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.