Kirby Knox, M.D.
NPI 1558684209 · General Practice Physician · San Leandro, CA
Enrolled with Medicare as Order and Referring Only - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kirby Knox, M.D. is a General Practice Physician provider in San Leandro, CA (NPI 1558684209).
Provider details
- NPI number
- 1558684209
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G65878 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-03-09
- Last updated
- 2010-03-09
Frequently asked questions
- What is Kirby Knox's NPI number?
- Kirby Knox's National Provider Identifier (NPI) is 1558684209, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kirby Knox's specialty?
- Kirby Knox is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Kirby Knox located?
- Kirby Knox's practice location on file with NPPES is 595 Estudillo Ave, San Leandro, CA 94577-4611.
- What is Kirby Knox's phone number?
- The practice phone number listed in the NPPES registry for Kirby Knox is (510) 483-5881.
- Does Kirby Knox accept Medicare?
- Kirby Knox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kirby Knox's NPI active?
- Yes — Kirby Knox's NPI (1558684209) is active in the NPPES registry as of the last update on 2010-03-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.