Alexandra Herweck MD, Mph
About this NPIWhat this record shows.
NPI 1609453257 is registered to Alexandra Herweck MD, Mph, a Reproductive Endocrinology practising at 259 E Erie St Ste 2400 in Chicago, Illinois. Reproductive Endocrinology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Alexandra Herweck MD, Mph has been enumerated in the National Provider Identifier (NPI) registry since 2021.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 1 PECOS enrollment record (with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 112 Reproductive Endocrinology providers on file in Illinois.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
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
- I20251203001028Obstetrics/GynecologyIL
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 Alexandra Herweck MD, Mph accepts. To confirm in-network status with your specific health plan, contact Alexandra Herweck MD, Mph directly at (312) 695-7269.
Frequently asked
Yes. NPI 1609453257 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Reproductive Endocrinology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
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 (312) 695-7269.
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. Alexandra Herweck MD, Mph is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 112 Reproductive Endocrinology providers are registered in Illinois, and Alexandra Herweck MD, Mph is one of them. The figure refreshes each month from the federal source.