Stephen Baer MD
About this NPIWhat this record shows.
NPI 1578528568 is registered to Stephen Baer MD, a Obstetrics & Gynecology practising at 165 Dartmouth St in Boston, Massachusetts. Obstetricians and Gynecologists (OB/GYNs) provide medical and surgical care for the female reproductive system, including pregnancy, childbirth, and gynecologic conditions. Stephen Baer MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Beyond the registryWhat this record adds.
This record carries 6 secondary identifiers beyond the base NPI: Medicaid and other payer cross-references used by billers and credentialers, which the standard CMS NPPES lookup does not surface. Within the directory it is one of 1,279 Obstetrics & Gynecology providers on file in Massachusetts.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 4450972-002MA· Issued by CIGNA
- 036391MA· Issued by TUFTS HEALTH PLAN
- M09144MA· Issued by BLUE CROSS
- G215MA· Issued by HARVARD PILGRIM
- 0015412MA· Issued by NEIGHBORHOOD HEALTH PLAN
Medicaid
- 2040379MA
Source: NPPES public registry.
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 Stephen Baer MD accepts. To confirm in-network status with your specific health plan, contact Stephen Baer MD directly at (617) 859-5250.
Frequently asked
Yes. NPI 1578528568 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Obstetricians and Gynecologists (OB/GYNs) provide medical and surgical care for the female reproductive system, including pregnancy, childbirth, and gynecologic conditions.
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 (617) 859-5250.
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. Stephen Baer MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 1,279 Obstetrics & Gynecology providers are registered in Massachusetts, and Stephen Baer MD is one of them. The figure refreshes each month from the federal source.