Ms. Elsa Hartwick M.D.
Also known as
- Formerly known asAguiniga, Elsa Maria
Source: NPPES public registry.
About this NPIWhat this record shows.
NPI 1558375022 is registered to Ms. Elsa Hartwick M.D., a Internal Medicine practising at 1414 S Grand Ave Ste 380 in Los Angeles, California. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Ms. Elsa Hartwick M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20101103000052Internal MedicineCA
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Ms. Elsa Hartwick M.D. accepts. To confirm in-network status with your specific health plan, contact Ms. Elsa Hartwick M.D. directly at (213) 222-1300.
Frequently asked
Yes. NPI 1558375022 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (213) 222-1300.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Ms. Elsa Hartwick M.D. is a Type-1 individual NPI.