Elaine Ahn, NP
NPI 1639901739 · Family Nurse Practitioner · Hayward, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elaine Ahn, NP is a Family Nurse Practitioner provider in Hayward, CA (NPI 1639901739).
Provider details
- NPI number
- 1639901739
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95031021 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2024-08-16
- Last updated
- 2024-08-16
- Certified
- 2024-08-16
Frequently asked questions
- What is Elaine Ahn's NPI number?
- Elaine Ahn's National Provider Identifier (NPI) is 1639901739, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elaine Ahn's specialty?
- Elaine Ahn is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Elaine Ahn located?
- Elaine Ahn's practice location on file with NPPES is 22331 Mission Blvd, Hayward, CA 94541-3911.
- What is Elaine Ahn's phone number?
- The practice phone number listed in the NPPES registry for Elaine Ahn is (510) 471-5880.
- Does Elaine Ahn accept Medicare?
- Elaine Ahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elaine Ahn's NPI active?
- Yes — Elaine Ahn's NPI (1639901739) is active in the NPPES registry as of the last update on 2024-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.