DR. CHRISTOPHER D O'BRIEN MD
NPI 1962643254
Internal Medicine - Pulmonary Disease in Philadelphia, PA

NPI Status: Active since March 16, 2009

Contact Information

51 N. 39TH STREET
PHI 1ST FLOOR
PHILADELPHIA, PA
ZIP 19104
Phone: (215) 662-8767

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  • Individual
  • Male
  • Internal Medicine
  • Pulmonary Disease

About CHRISTOPHER O'BRIEN

This page provides the complete NPI Profile along with additional information for Christopher O'brien, an internist established in Philadelphia, Pennsylvania with a medical specialization in Internal Medicine, focusing in pulmonary disease . The healthcare provider is registered in the NPI registry with number 1962643254 assigned on March 2009. The practitioner's primary taxonomy code is 207RP1001X with license number MD050568L (PA). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI
1962643254
Provider Name
DR. CHRISTOPHER D O'BRIEN MD
Gender
Male
Entity Type
Individual
Location Address
51 N. 39TH STREET PHI 1ST FLOOR PHILADELPHIA, PA 19104
Location Phone
(215) 662-8767
Mailing Address
51 N. 39TH STREET PHI 1ST FLOOR PHILADELPHIA, PA 19104
Mailing Phone
(215) 662-8767
Is Sole Proprietor?
No
Enumeration Date
03-16-2009
Last Update Date
01-30-2012
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An internist like Christopher O'brien 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 Pulmonary Disease

Taxonomy Code
207RP1001X
Type
Allopathic & Osteopathic Physicians
License No.
MD050568L
License State
PA
Taxonomy Description
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

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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 1962643254, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

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
9
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
2
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
4
Unchanged
Pos 7
3
Doubled → 6
Pos 8
2
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
4
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 6 → 12 → 3 6 → 12 → 3 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 2 + 2 + 1 + 2 + 4 + 6 + 2 + 1 + 0 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1962643254.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Hematology & Oncology)
51 N. 39TH STREET, 103A MEDICAL ARTS BUILDING
PHILADELPHIA, PA 19104
Internal Medicine
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Emergency Medicine
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Internal Medicine
51 N. 39TH STREET, MAB, SUITE 102
PHILADELPHIA, PA 19104
Allergy & Immunology
51 N. 39TH STREET, MUTCH BLDG, 5TH FLOOR
PHILADELPHIA, PA 19104
Internal Medicine (Hematology)
51 N. 39TH STREET, 103A MEDICAL ARTS BUILDING
PHILADELPHIA, PA 19104
Internal Medicine (Hematology & Oncology)
51 N. 39TH STREET, 103A MEDICAL ARTS BUILDING
PHILADELPHIA, PA 19104
Family Medicine
51 N. 39TH STREET, 7TH FLOOR
PHILADELPHIA, PA 19104
Internal Medicine (Cardiovascular Disease)
51 N. 39TH STREET, PHI - 2C
PHILADELPHIA, PA 19104
Emergency Medicine
51 N. 39TH STREET, EMERGENCY MEDICINE
PHILADELPHIA, PA 19104
Radiology (Diagnostic Radiology)
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Physician Assistant
51 N. 39TH STREET, MOB 300
PHILADELPHIA, PA 19104
Internal Medicine (Pulmonary Disease)
51 N. 39TH STREET, PHI 1ST FLOOR
PHILADELPHIA, PA 19104
Internal Medicine (Gastroenterology)
51 N. 39TH STREET, 218 WRIGHT SAUNDERS
PHILADELPHIA, PA 19104
Nurse Practitioner (Family)
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Emergency Medicine
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Emergency Medicine
51 N. 39TH STREET, -MYRIN - M01
PHILADELPHIA, PA 19104
Ophthalmology
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Emergency Medicine
51 N. 39TH STREET
PHILADELPHIA, PA 19104
Internal Medicine
51 N. 39TH STREET
PHILADELPHIA, PA 19104

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1962643254, enumerated as an "individual" on March 16, 2009.

The provider is located at 51 N. 39TH STREET PHI 1ST FLOOR PHILADELPHIA, PA 19104 and the phone number is (215) 662-8767.

Internal Medicine with taxonomy code 207RP1001X and a focus in Pulmonary Disease.