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Joanna Karraker
NPI 1023772456 · Durable Medical Equipment & Medical Supplies · Oakland, CA
Joanna Karraker is a Durable Medical Equipment & Medical Supplies provider in Oakland, CA (NPI 1023772456).
Provider details
- NPI number
- 1023772456
- Entity type
- Individual
- Primary specialty
- Durable Medical Equipment & Medical SuppliesSuppliers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Suppliers
Profile Score
Established profile(55/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
4400 Harbord Dr
Oakland, CA 94618-2207
Phone: (510) 540-8200
Street-level locationGet directions
Mailing address
4400 Harbord Dr
Oakland, CA 94618-2207
Registry dates
- Enumerated
- 2021-10-21
- Last updated
- 2021-10-21
- Certified
- 2021-10-20
Frequently asked questions
- What is Joanna Karraker's NPI number?
- Joanna Karraker's National Provider Identifier (NPI) is 1023772456, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Karraker's specialty?
- Joanna Karraker is listed in the NPPES registry with a primary specialty of Durable Medical Equipment & Medical Supplies (Suppliers).
- Where is Joanna Karraker located?
- Joanna Karraker's practice location on file with NPPES is 4400 Harbord Dr, Oakland, CA 94618-2207.
- What is Joanna Karraker's phone number?
- The practice phone number listed in the NPPES registry for Joanna Karraker is (510) 540-8200.
- Is Joanna Karraker's NPI active?
- Yes — Joanna Karraker's NPI (1023772456) is active in the NPPES registry as of the last update on 2021-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.