MCMACKIN & ZIMNOCH, PC
NPI 1962667048
Internal Medicine in Washington, DC

NPI Status: Active since July 28, 2008

Contact Information

2311 M ST NW
SUITE 302
WASHINGTON, DC
ZIP 20037
Phone: (202) 296-0043
Fax: (202) 296-1306

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  • Organization
  • Internal Medicine
  • CLIA Number: 09D0873210
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 12-22-2025

About MCMACKIN & ZIMNOCH, PC

This page provides the complete NPI Profile along with additional information for Mcmackin & Zimnoch, Pc, an internist established in Washington, District Of Columbia operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1962667048 assigned on July 2008. The practitioner's primary taxonomy code is 207R00000X with license number 16615 (DC). The provider is registered as an organization and their NPI record was last updated 13 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Christopher M Mcmackin Md (President)

NPI
1962667048
Provider Name
MCMACKIN & ZIMNOCH, PC
Entity Type
Organization
Location Address
2311 M ST NW SUITE 302 WASHINGTON, DC 20037
Location Phone
(202) 296-0043
Location Fax
(202) 296-1306
Mailing Address
2311 M ST NW SUITE 302 WASHINGTON, DC 20037
Mailing Phone
(202) 296-0043
Mailing Fax
(202) 296-1306
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
07-28-2008
Last Update Date
10-15-2013
Code Navigator

An internist like Mcmackin & Zimnoch, Pc 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.
16615
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. CHRISTOPHER M MCMACKIN MD

Authorized Official Title
PRESIDENT
Authorized Official Phone
(202) 296-0043

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
09D0873210
Facility Type
Physician Office
Certificate Effective Date
December 23, 2023
Certificate Expiration Date
December 22, 2025
Laboratory Director
LAWRENCE A. ZIMNOCH MD
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Mcmackin & Zimnoch, Pc to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1962667048, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
6
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
0
Unchanged
Pos 9
4
Doubled → 8
Check
8
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 7 → 14 → 5 4 → 8

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 + 6 + 1 + 4 + 0 + 8 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1962667048.

Other Providers at the Same Location


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

Dentist (Periodontics)
2311 M ST NW, STE 500
WASHINGTON, DC 20037
Obstetrics & Gynecology (Gynecology)
2311 M ST NW, SUITE 304
WASHINGTON, DC 20037
Obstetrics & Gynecology (Gynecology)
2311 M ST NW, SUITE 304
WASHINGTON, DC 20037
Internal Medicine (Gastroenterology)
2311 M ST NW, SUITE 302
WASHINGTON, DC 20037
Oral & Maxillofacial Surgery
2311 M ST NW, SUITE 200
WASHINGTON, DC 20037
Dentist (Endodontics)
2311 M ST NW, SUITE 404
WASHINGTON, DC 20037
Dentist (Periodontics)
2311 M ST NW, SUITE 500
WASHINGTON, DC 20037
Internal Medicine
2311 M ST NW, SUITE 401
WASHINGTON, DC 20037
Dentist
2311 M ST NW, SUITE 400
WASHINGTON, DC 20037
Acupuncturist
2311 M ST NW, STE 301
WASHINGTON, DC 20037
Internal Medicine
2311 M ST NW, SUITE 302
WASHINGTON, DC 20037
Surgery (Plastic and Reconstructive Surgery)
2311 M ST NW, SUITE 503
WASHINGTON, DC 20037
Surgery (Vascular Surgery)
2311 M ST NW, SUITE 501
WASHINGTON, DC 20037
Internal Medicine
2311 M ST NW, SUITE 401
WASHINGTON, DC 20037
Nurse Anesthetist, Certified Registered
2311 M ST NW
WASHINGTON, DC 20037
Specialist
2311 M ST NW, SUITE 101
WASHINGTON, DC 20037
Dentist
2311 M ST NW, SUITE 305
WASHINGTON, DC 20037
Clinic/Center (Dental)
2311 M ST NW, SUITE 305
WASHINGTON, DC 20037
Nurse Practitioner (Adult Health)
2311 M ST NW, SUITE 101
WASHINGTON, DC 20037
Obstetrics & Gynecology (Gynecology)
2311 M ST NW, SUITE 304
WASHINGTON, DC 20037

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1962667048, enumerated as an "organization" on July 28, 2008.

The provider is located at 2311 M ST NW SUITE 302 WASHINGTON, DC 20037 and the phone number is (202) 296-0043.

Internal Medicine with taxonomy code 207R00000X.