DR. JOHN CARRUTH CHAPIN MD
NPI 1205150869
Internal Medicine - Hematology & Oncology in New York, NY
NPI Status: Active since March 24, 2010
Contact Information
520 E 70TH ST
STARR 341
NEW YORK, NY
ZIP 10021
Phone: (646) 962-2065
- Individual
- Male
- Internal Medicine
- Hematology & Oncology
About JOHN CHAPIN
This page provides the complete NPI Profile along with additional information for John Chapin, an internist established in New York, New York with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1205150869 assigned on March 2010. The practitioner's primary taxonomy code is 207RH0003X with license number 256429 (NY). The provider is registered as an individual and his NPI record was last updated 12 years ago.
- NPI
- 1205150869
- Provider Name
- DR. JOHN CARRUTH CHAPIN MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 520 E 70TH ST STARR 341 NEW YORK, NY 10021
- Location Phone
- (646) 962-2065
- Mailing Address
- 575 LEXINGTON AVE NEW YORK, NY 10022
- Mailing Phone
- (646) 962-2065
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-24-2010
- Last Update Date
- 03-27-2014
- Code Navigator
An internist like John Chapin 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 Hematology & Oncology
- Taxonomy Code
- 207RH0003X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 256429
- License State
- NY
- Taxonomy Description
- An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | 256429 (NY) |
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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 1205150869, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 51 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1205150869, enumerated as an "individual" on March 24, 2010.
The provider is located at 520 E 70TH ST STARR 341 NEW YORK, NY 10021 and the phone number is (646) 962-2065.
Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.
