David Fisher MD
About this NPIWhat this record shows.
NPI 1770542391 is registered to David Fisher MD, a Hematology (Internal Medicine) Physician practising at 44 Binney St, D1830 in Boston, Massachusetts. Hematology (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. David Fisher MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Beyond the registryWhat this record adds.
This record carries 8 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. It is enrolled in Medicare, linking to 2 PECOS enrollment records (each with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 112 Hematology (Internal Medicine) Physician 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
- 759412· Issued by TUFTS
- 3600190· Issued by UNITED HEALTHCARE
- 8834749· Issued by CIGNA
- 40304· Issued by FALLON COMMUNITY HEALTH P
- G13811DF· Issued by HPHC (DFCI ONLY)
- J31627MA· Issued by BLUE CROSS BLUE SHIELD
- 0607808· Issued by AETNA US HEALTHCARE
- 3146197· Issued by MASSHEALTH (MA MEDICAID)
Source: NPPES public registry.
Medicare enrollment
This provider holds 2 Medicare enrollments 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
- I20050314000797Medical OncologyMA
- I20090916000290Medical OncologyNH
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 David Fisher MD accepts. To confirm in-network status with your specific health plan, contact David Fisher MD directly at (617) 632-6844.
Frequently asked
Yes. NPI 1770542391 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Hematology (Internal Medicine) Physician 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 (617) 632-6844.
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. David Fisher MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 112 Hematology (Internal Medicine) Physician providers are registered in Massachusetts, and David Fisher MD is one of them. The figure refreshes each month from the federal source.