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JONAH PATRICK ISENSTEIN LCSW
NPI 1134939515
Social Worker - Clinical in Berkeley, CA

Active since January 08, 2025PECOS EnrolledAccepts Medicare Assignment
2640 MARTIN LUTHER KING JR WAY, BERKELEY, CA 94704(510) 981-5290 Get Directions Write a Review

NPPES record last updated: May 4, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: May 4, 2026, Jan 8, 2025 (2 updates tracked since 2025).

About Jonah Patrick Isenstein Lcsw NPPES

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

JONAH PATRICK ISENSTEIN LCSW (NPI 1134939515) is an individual clinical provider in Berkeley, California, licensed in California (138232) and active in the NPI registry since January 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1134939515
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJONAH PATRICK ISENSTEINCredential: LCSW
Location Address2640 MARTIN LUTHER KING JR WAYBerkeley, CA 94704-3238
Mailing Address2640 Martin Luther King Jr WayBerkeley, CA 94704-3238 · (510) 981-5290
Phone(510) 981-5290
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateJanuary 8, 2025
Last NPPES UpdateMay 4, 20262 updates tracked since enumeration
NPPES CertifiedMay 4, 2026
✔ NPI 1134939515 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 · 138232
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.
2640 MARTIN LUTHER KING JR WAY, Berkeley, CA 94704
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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 and accepts Medicare assignment

Jonah Patrick Isenstein Lcsw 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 ID3870062334
PECOS Enrollment IDI20260514001931
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 Jonah Isenstein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Of Berkeley
Same address
Mental Health (Including Community Mental Health Center)
2640 MARTIN LUTHER KING JR WAY
Berkeley, CA 94704
  • Reassigned Medicare billing, California enrollment
  • 30 clinicians in this Medicare group
NPI 1215963699 (510) 981-5290

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 94704 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 $69.00 – $202.35
Typical copayment $0.00 (range $17.25 – $50.58)
Most-billed visit code NA
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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.

MARGARET SUSAN HIGGINS RN
Registered Nurse (Psychiatric/Mental Health)
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
JULIE ANN OQUERIZA MARIANO
Registered Nurse (Psychiatric/Mental Health, Adult)
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
JAMES RUBIN GLENN
Social Worker
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
LELAND S JOHNSON MFT
Marriage & Family Therapist
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
BRYAN THUNSTEDT RN
Registered Nurse
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
MR. MICHAEL HILTON MARCHANT LCSW
Social Worker (Clinical)
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
MISS AMANDA HARTMAN
Student in an Organized Health Care Education/Training Program
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290
KATHARINE VIDT
Student in an Organized Health Care Education/Training Program
2640 MARTIN LUTHER KING JR WAY
BERKELEY, CA 94704
Alameda County (510) 981-5290

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 Jonah Isenstein's NPI number?

The NPI number for Jonah Isenstein is 1134939515. It was assigned to this individual provider in the NPPES registry on January 8, 2025.

Where is Jonah Isenstein located?

Jonah Isenstein practices at 2640 Martin Luther King Jr Way, Berkeley, CA 94704. The listed phone number is (510) 981-5290.

What is Jonah Isenstein's specialty?

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

Is Jonah Isenstein enrolled in Medicare?

Yes. Jonah Isenstein 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 Jonah Isenstein's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonah Isenstein reassigns Medicare benefits to City Of Berkeley (Berkeley, 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 Jonah Isenstein'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 Jonah Isenstein was last updated on May 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.