DR. STEPHEN MARK FEINSTONE M.D.
NPI 1083850655
Internal Medicine in Washington, DC

NPI Status: Active since January 01, 2009

Contact Information

3021 CATHEDRAL AVE NW
WASHINGTON, DC
ZIP 20008
Phone: (202) 462-5068
Fax: (301) 402-5585

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  • Individual
  • Male
  • Internal Medicine

About STEPHEN FEINSTONE

This page provides the complete NPI Profile along with additional information for Stephen Feinstone, an internist established in Washington, District Of Columbia with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1083850655 assigned on January 2009. The practitioner's primary taxonomy code is 207R00000X with license number MD25794 (DC). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1083850655
Provider Name
DR. STEPHEN MARK FEINSTONE M.D.
Gender
Male
Entity Type
Individual
Location Address
3021 CATHEDRAL AVE NW WASHINGTON, DC 20008
Location Phone
(202) 462-5068
Location Fax
(301) 402-5585
Mailing Address
3021 CATHEDRAL AVE NW WASHINGTON, DC 20008
Mailing Phone
(202) 462-5068
Mailing Fax
(301) 402-5585
Is Sole Proprietor?
Yes
Enumeration Date
01-01-2009
Last Update Date
01-01-2009
Code Navigator

An internist like Stephen Feinstone 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.
MD25794
License State
DC
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.

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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 1083850655, we treat the final digit (5) 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).

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
0
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
3
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
5
Unchanged
Pos 7
0
Doubled → 0
Pos 8
6
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
5
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 8 → 16 → 7 8 → 16 → 7 0 → 0 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 6 + 3 + 1 + 6 + 5 + 0 + 6 + 1 + 0 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1083850655.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1083850655, enumerated as an "individual" on January 01, 2009.

The provider is located at 3021 CATHEDRAL AVE NW WASHINGTON, DC 20008 and the phone number is (202) 462-5068.

Internal Medicine with taxonomy code 207R00000X.