MARK ALLEN SCHAEFFER M.D. NPI 1194866087

NPI Information

NPI: 1194866087
Provider Name: MARK ALLEN SCHAEFFER, M.D.
Classification: Internal Medicine - 207R00000X
Entity Type: Individual
Address: 800 BUNN DR
SUITE 302
PRINCETON, NJ
ZIP 08540
Phone: (609) 921-1680

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NPI Details

Mark Allen Schaeffer, M.D. is an internal medicine in Princeton, NJ. The provider is a physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. Mark Allen Schaeffer, M.D. NPI is 1194866087. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

800 BUNN DR
SUITE 302
PRINCETON, NJ
ZIP 08540-968
Phone: (609) 921-1680
Fax: (609) 921-1438

The enumeration date for this NPI number is 2/12/2007 and was last updated on 3/11/2012.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No.	Taxonomy Code	Taxonomy Clasification	Taxonomy Specialization	License Number	License State	Primary
1	207R00000X	Internal Medicine		25MA04680500	NEW JERSEY	Yes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No.	Other Provider Identifier	Other Provider Identifier Type	Other Provider Identifier State	Other Provider Identifier Issuer
1	D20074	MEDICARE UPIN	NEW JERSEY
2	271656004	OTHER	NEW JERSEY	TAX ID # PRINCETON PREMIER MEDICINE, LLC
3	885917	MEDICARE ID-TYPE UNSPECIFIED	NEW JERSEY
4	223457805	OTHER	NEW JERSEY	TAX ID NUMBER

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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