Island Medical Group a Medical Corporation
NPI 1750474045 · Nephrology Physician · Alameda, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Island Medical Group a Medical Corporation is a Nephrology Physician organization in Alameda, CA (NPI 1750474045).
Provider details
- NPI number
- 1750474045
- Entity type
- Organization
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Alka Sharma, MD / Owner(510) 748-0931
- License
- A48009 (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
19 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
- 2006-10-02
- Last updated
- 2021-07-30
- Certified
- 2021-07-30
Frequently asked questions
- What is Island Medical Group a Medical Corporation's NPI number?
- Island Medical Group a Medical Corporation's National Provider Identifier (NPI) is 1750474045, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Island Medical Group a Medical Corporation?
- Island Medical Group a Medical Corporation is classified in the NPPES registry as Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Island Medical Group a Medical Corporation located?
- Island Medical Group a Medical Corporation's practice location on file with NPPES is 2070 Clinton Ave Fl 4, Alameda, CA 94501-4320.
- What is Island Medical Group a Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Island Medical Group a Medical Corporation is (510) 748-0931.
- Does Island Medical Group a Medical Corporation accept Medicare?
- Island Medical Group a Medical Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Island Medical Group a Medical Corporation?
- The authorized official listed on Island Medical Group a Medical Corporation's NPPES record is Alka Sharma, MD / Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Island Medical Group a Medical Corporation's NPI active?
- Yes — Island Medical Group a Medical Corporation's NPI (1750474045) is active in the NPPES registry as of the last update on 2021-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.