JULIA ANN HASSEN LCSW
NPI 1558222729
Social Worker - Clinical in Stanford, CA
About Julia Ann Hassen Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JULIA ANN HASSEN LCSW (NPI 1558222729) is an individual clinical provider in Stanford, California, licensed in California (LCSW133114) and active in the NPI registry since November 2025. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Julia Ann Hassen Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Julia Hassen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
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 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Julia Hassen's NPI number?
The NPI number for Julia Hassen is 1558222729. It was assigned to this individual provider in the NPPES registry on November 18, 2025.
Where is Julia Hassen located?
Julia Hassen practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Julia Hassen's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Julia Hassen enrolled in Medicare?
Yes. Julia Hassen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Julia Hassen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Julia Hassen reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and Lpch Medical Group Div Of Lucile (Palo Alto, 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 Julia Hassen'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 Julia Hassen was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Julia Ann Hassen, LCSW · NPI 1558222729
Clinical provider in Stanford, California. Individual provider, active in the CMS NPPES registry since November 18, 2025.
## Identity
- **NPI:** 1558222729 (Entity type: Individual)
- **Enumerated:** November 18, 2025
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** LCSW133114 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** August 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1558222729) · Data from the CMS NPPES public registry.