STEVEN A HARRISON MD A PROFESSIONAL CORPORATION
NPI 1649296385
Ophthalmology in Walnut Creek, CA
About Steven A Harrison Md A Professional Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN A HARRISON MD A PROFESSIONAL CORPORATION (NPI 1649296385) is a healthcare organization registered as an ophthalmology in Walnut Creek, California and active in the NPI registry since July 2006. The organization lists Steven A Harrison, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Steven A Harrison Md A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
3Medicare enrollment records show 3 clinicians reassign Medicare billing to Steven A Harrison MD A Professional Corporation, which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.
Clinicians, nearest first (3)
Walnut Creek, CA 94596
Walnut Creek, CA 94596
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Steven A Harrison MD A Professional Corporation's NPI number?
The NPI number for Steven A Harrison MD A Professional Corporation is 1649296385. It was assigned to this organization in the NPPES registry on July 14, 2006.
Where is Steven A Harrison MD A Professional Corporation located?
Steven A Harrison MD A Professional Corporation is located at 1299 Newell Hill Pl Suite 103, Walnut Creek, CA 94596. The listed phone number is (925) 947-0505.
What is Steven A Harrison MD A Professional Corporation's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Steven A Harrison MD A Professional Corporation enrolled in Medicare?
Yes. Steven A Harrison MD A Professional Corporation is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Steven A Harrison MD A Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Ophthalmology, reassign their Medicare billing to Steven A Harrison MD A Professional Corporation. A 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 the clinician's services. Of these, 3 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Steven A Harrison MD A Professional Corporation was last updated on September 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Steven A Harrison Md A Professional Corporation · NPI 1649296385
Ophthalmology organization in Walnut Creek, California. Organization record, active in the CMS NPPES registry since July 14, 2006.
## Identity
- **NPI:** 1649296385 (Entity type: Organization)
- **Enumerated:** July 14, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Organization subpart:** No
- **Authorized official:** Steven Harrison, CEO
## Practice location
- **Address:** 1299 NEWELL HILL PL, SUITE 103, Walnut Creek, CA 94596-5292
- **Phone:** (925) 947-0505
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 3 clinicians (Ophthalmology) reassign Medicare billing to this organization (form CMS-855R); 3 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 21, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1649296385) · Data from the CMS NPPES public registry.