J. MICHAEL KARST M.D., P.A.
NPI 1750436895
Internal Medicine in Montgomery, AL

NPI Status: Active since January 25, 2007

Contact Information

4485 ATLANTA HWY
MONTGOMERY, AL
ZIP 36109
Phone: (334) 272-4302
Fax: (334) 272-0195

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  • Organization
  • Internal Medicine
  • CLIA Number: 01D0304240
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 05-24-2027

About J. MICHAEL KARST M.D., P.A.

This page provides the complete NPI Profile along with additional information for J. Michael Karst M.d., P.a., an internist established in Montgomery, Alabama operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1750436895 assigned on January 2007. The practitioner's primary taxonomy code is 207R00000X with license number 13546 (AL). The provider is registered as an organization and their NPI record was last updated 2 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 Ann Karst (Office Manager)

NPI
1750436895
Provider Name
J. MICHAEL KARST M.D., P.A.
Entity Type
Organization
Location Address
4485 ATLANTA HWY MONTGOMERY, AL 36109
Location Phone
(334) 272-4302
Location Fax
(334) 272-0195
Mailing Address
4485 ATLANTA HWY MONTGOMERY, AL 36109
Mailing Phone
(334) 272-4302
Mailing Fax
(334) 272-0195
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-25-2007
Last Update Date
03-08-2024
Code Navigator

An internist like J. Michael Karst M.d., P.a. 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.
13546
License State
AL
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.

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.

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

ANN KARST

Authorized Official Title
OFFICE MANAGER
Authorized Official Phone
(334) 272-4302

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
200006016OTHER (01)TRAVELERS MEDICARE

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
01D0304240
Facility Type
Physician Office
Certificate Effective Date
May 25, 2025
Certificate Expiration Date
May 24, 2027
Laboratory Director
J MICHAEL KARST
Certificate Type
Certificate of Compliance
Certificate Type Description
This CLIA certificate is issued to J. Michael Karst M.d., P.a. after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements. This type of certificate is issued to laboratories that perform nonwaived (moderate and/or high complexity) testing.

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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 1750436895, 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 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
7
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
0
Unchanged
Pos 5
4
Doubled → 8
Pos 6
3
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
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 5 → 10 → 1 4 → 8 6 → 12 → 3 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 0 + 0 + 8 + 3 + 1 + 2 + 8 + 1 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1750436895.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Internal Medicine
4485 ATLANTA HWY
MONTGOMERY, AL 36109

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1750436895, enumerated as an "organization" on January 25, 2007.

The provider is located at 4485 ATLANTA HWY MONTGOMERY, AL 36109 and the phone number is (334) 272-4302.

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.