HILARY ANN DIAMOND
NPI 1376706515
Counselor in Oakland, CA
About Hilary Ann Diamond NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HILARY ANN DIAMOND (NPI 1376706515) is an individual counselor in Oakland, California and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Hilary Ann Diamond is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Hilary Diamond 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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAKLAND, CA 94611
OAKLAND, CA 94611
OAKLAND, CA 94611
OAKLAND, CA 94611
OAKLAND, CA 94611
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 Hilary Diamond's NPI number?
The NPI number for Hilary Diamond is 1376706515. It was assigned to this individual provider in the NPPES registry on July 8, 2008.
Where is Hilary Diamond located?
Hilary Diamond practices at 2220 Mountain Blvd Ste 240, Oakland, CA 94611. The listed phone number is (510) 822-6796.
What is Hilary Diamond's specialty?
The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.
Is Hilary Diamond enrolled in Medicare?
Yes. Hilary Diamond is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Hilary Diamond's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hilary Diamond 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 Hilary Diamond'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 Hilary Diamond was last updated on April 13, 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.
# Hilary Ann Diamond · NPI 1376706515
Counselor provider in Oakland, California. Individual provider, active in the CMS NPPES registry since July 8, 2008.
## Identity
- **NPI:** 1376706515 (Entity type: Individual)
- **Enumerated:** July 8, 2008
- **Primary specialty:** Counselor · taxonomy 101Y00000X
- **Sole proprietor:** No
## Practice location
- **Address:** 2220 MOUNTAIN BLVD, STE 240, Oakland, CA 94611-2905
- **Phone:** (510) 822-6796
## 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
## Record status
- **NPPES last updated:** April 13, 2022
- **Other identifiers:** Other 000000000000000 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1376706515) · Data from the CMS NPPES public registry.