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MR. DARREN FOLK LCSW
NPI 1013241637
Social Worker - Clinical in San Jose, CA

Active since September 29, 2009PECOS Enrolled
2625 ZANKER RD STE 101, SAN JOSE, CA 95134(408) 309-3917 Get Directions Write a Review

NPPES record last updated: December 30, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mr. Darren Folk Lcsw NPPES

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

MR. DARREN FOLK LCSW (NPI 1013241637) is an individual clinical provider in San Jose, California, licensed in California (24923) and active in the NPI registry since September 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013241637
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. DARREN FOLKCredential: LCSW
Location Address2625 ZANKER RD STE 101San Jose, CA 95134-2130
Mailing Address2625 Zanker Rd Ste 101San Jose, CA 95134-2130
Phone(408) 309-3917
Sole ProprietorNo
Enumeration DateSeptember 29, 2009
Last NPPES UpdateDecember 30, 2021
✔ NPI 1013241637 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 24923
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.
2625 ZANKER RD STE 101, San Jose, CA 95134
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Darren Folk Lcsw 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 Darren Folk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
5.3 mi
Internal Medicine
710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1073606299 (408) 851-1000

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 95134 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 $70.37 – $206.04
Typical copayment $0.00 (range $17.59 – $51.51)
Most-billed visit code NA
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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 3

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

KHANH HOA NGUYEN
Counselor (Mental Health)
2625 ZANKER RD STE 101, SUITE 200
SAN JOSE, CA 95134
Santa Clara County (408) 325-5287
NICOLE BURGESS
Counselor
2625 ZANKER RD STE 101
SAN JOSE, CA 95134
Santa Clara County (408) 325-5211
ANYANI PARTIDA
Social Worker
2625 ZANKER RD STE 101
SAN JOSE, CA 95134
Santa Clara County (408) 325-5285

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 Darren Folk's NPI number?

The NPI number for Darren Folk is 1013241637. It was assigned to this individual provider in the NPPES registry on September 29, 2009.

Where is Darren Folk located?

Darren Folk practices at 2625 Zanker Rd Ste 101, San Jose, CA 95134. The listed phone number is (408) 309-3917.

What is Darren Folk's specialty?

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

Is Darren Folk enrolled in Medicare?

Yes. Darren Folk is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Darren Folk's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darren Folk reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, 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 Darren Folk'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 Darren Folk was last updated on December 30, 2021. 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.