MARK ALLEN SCHAEFFER M.D.
NPI 1194866087
Internal Medicine in Princeton, NJ

NPI Status: Active since February 12, 2007

Contact Information

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

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  • Individual
  • Male
  • Internal Medicine

About MARK SCHAEFFER

This page provides the complete NPI Profile along with additional information for Mark Schaeffer, an internist established in Princeton, New Jersey with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1194866087 assigned on February 2007. The practitioner's primary taxonomy code is 207R00000X with license number 25MA04680500 (NJ). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI
1194866087
Provider Name
MARK ALLEN SCHAEFFER M.D.
Gender
Male
Entity Type
Individual
Location Address
800 BUNN DR SUITE 302 PRINCETON, NJ 08540
Location Phone
(609) 921-1680
Location Fax
(609) 921-1438
Mailing Address
800 BUNN DR SUITE 302 PRINCETON, NJ 08540
Mailing Phone
(609) 921-1680
Mailing Fax
(609) 921-1438
Is Sole Proprietor?
No
Enumeration Date
02-12-2007
Last Update Date
03-11-2012
Code Navigator

An internist like Mark Schaeffer is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
25MA04680500
License State
NJ
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
D20074MEDICARE UPIN (02)NJ 
271656004OTHER (01)NJTAX ID # PRINCETON PREMIER MEDICINE, LLC
885917MEDICARE ID-TYPE UNSPECIFIED (04)NJ 
223457805OTHER (01)NJTAX ID NUMBER

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1194866087, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
4
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
6
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
0
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
7
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 9 → 18 → 9 8 → 16 → 7 6 → 12 → 3 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 1 + 8 + 4 + 1 + 6 + 6 + 1 + 2 + 0 + 1 + 6 + 24 = 63

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1194866087.

Other Providers at the Same Location


The following 16 providers are registered at the same or a nearby location.

Dermatology
800 BUNN DR, SUITE 201
PRINCETON, NJ 08540
Ophthalmology
800 BUNN DR, SUITE 301
PRINCETON, NJ 08540
Ophthalmology
800 BUNN DR, SUITE 301
PRINCETON, NJ 08540
Obstetrics & Gynecology (Gynecology)
800 BUNN DR, SUITE 202
PRINCETON, NJ 08540
Clinic/Center (Physical Therapy)
800 BUNN DR, SUITE 102
PRINCETON, NJ 08540
Internal Medicine
800 BUNN DR, SUITE 302
PRINCETON, NJ 08540
Physical Therapist
800 BUNN DR, SUITE 102
PRINCETON, NJ 08540
Physical Therapist
800 BUNN DR
PRINCETON, NJ 08540
Dietitian, Registered
800 BUNN DR, 302
PRINCETON, NJ 08540
Physical Medicine & Rehabilitation
800 BUNN DR, #102
PRINCETON, NJ 08540
Physical Therapist
800 BUNN DR
PRINCETON, NJ 08540
Clinic/Center (Physical Therapy)
800 BUNN DR, # 102
PRINCETON, NJ 08540
Social Worker (Clinical)
800 BUNN DR, SUITE 205
PRINCETON, NJ 08540
Psychiatry & Neurology (Psychiatry)
800 BUNN DR, SUITE 304
PRINCETON, NJ 08540
Physical Therapist
800 BUNN DR
PRINCETON, NJ 08540
Psychiatry & Neurology (Neurology)
800 BUNN DR
PRINCETON, NJ 08540

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1194866087, enumerated as an "individual" on February 12, 2007.

The provider is located at 800 BUNN DR SUITE 302 PRINCETON, NJ 08540 and the phone number is (609) 921-1680.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.