DIANNA LACY
NPI 1710385802
Counselor - Mental Health in Oakland, CA
About Dianna Lacy NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANNA LACY (NPI 1710385802) is an individual mental health provider in Oakland, California and active in the NPI registry since December 2014. She is enrolled in Medicare PECOS and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dianna Lacy is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Dianna Lacy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95113
- Reassigned Medicare billing, California enrollment
- 3,139 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.
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.
OAKLAND, CA 94607
OAKLAND, CA 94607
OAKLAND, CA 94607
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 Dianna Lacy's NPI number?
The NPI number for Dianna Lacy is 1710385802. It was assigned to this individual provider in the NPPES registry on December 5, 2014.
Where is Dianna Lacy located?
Dianna Lacy practices at 1266 14th St, Oakland, CA 94607. The listed phone number is (510) 531-3111.
What is Dianna Lacy's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Dianna Lacy enrolled in Medicare?
Yes. Dianna Lacy is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Dianna Lacy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dianna Lacy reassigns Medicare benefits to Grow Healthcare Group PC (San Jose, 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 Dianna Lacy'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 Dianna Lacy was last updated on December 5, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Dianna Lacy · NPI 1710385802
Mental Health provider in Oakland, California. Individual provider, active in the CMS NPPES registry since December 5, 2014.
## Identity
- **NPI:** 1710385802 (Entity type: Individual)
- **Enumerated:** December 5, 2014
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **Sole proprietor:** No
## Practice location
- **Address:** 1266 14TH ST, Oakland, CA 94607-2205
- **Phone:** (510) 531-3111
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Grow Healthcare Group PC (NPI 1154994846, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** December 5, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1710385802) · Data from the CMS NPPES public registry.