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About this NPIWhat this record shows.
NPI 1851019236 is registered to Dr. Mark Feinberg MD, PHD, a Internal Medicine practising at 1020 W Upsal St in Philadelphia, Pennsylvania. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Dr. Mark Feinberg MD, PHD has been enumerated in the National Provider Identifier (NPI) registry since 2022.
Provider type
Individual (Type 1)
Status
Active
Enumerated
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The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Mark Feinberg MD, PHD accepts. To confirm in-network status with your specific health plan, contact Dr. Mark Feinberg MD, PHD directly at (215) 435-6981.
Frequently asked
Yes. NPI 1851019236 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 (215) 435-6981.
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. Dr. Mark Feinberg MD, PHD is a Type-1 individual NPI.
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