Peter Siersma MD
About this NPIWhat this record shows.
NPI 1730148149 is registered to Peter Siersma MD, a Internal Medicine practising at 14 Williams St in Williamsburg, Massachusetts. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Peter Siersma MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
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
- 04-3194547MA· Issued by NORTHEAST HEALTHCARE ALLI
- 717459MA· Issued by TUFTS
- 000000008323MA· Issued by BMC
- 04-3194547MA· Issued by CONSOLIDATED
- 04-3194547MA· Issued by PLAN VISTA
- 04-3194547MA· Issued by UNICARE/GIC
- 16424MA· Issued by HNE
- 528959MA· Issued by AETNA
- 04-3194547MA· Issued by NORTH AMERICAN PREFERRED
- 04-3194547MA· Issued by UNITED HEALTHCARE
- 515970MA· Issued by HEALTHSOURCE
- J05149MA· Issued by BCBSMA
- 04-3194547MA· Issued by GREAT-WEST
- 04-3194547MA· Issued by NORTHEAST HEALTH DIRECT
- 04-3194547MA· Issued by PHCS
- 6337318007MA· Issued by CIGNA
- 731026MA· Issued by CONNECTICARE
Medicaid
- 3005763MA
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 Peter Siersma MD accepts. To confirm in-network status with your specific health plan, contact Peter Siersma MD directly at (413) 268-3616.
Frequently asked
Yes. NPI 1730148149 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 (413) 268-3616.
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. Peter Siersma MD is a Type-1 individual NPI.