MONZERMD LLC
NPI 1285561399
Internal Medicine - Critical Care Medicine in San Antonio, TX

NPI Status: Active since May 05, 2026

Contact Information

3636 MEDICAL DR
SAN ANTONIO, TX
ZIP 78229
Phone: (917) 628-7982

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  • Organization
  • Internal Medicine
  • Critical Care Medicine

About MONZERMD LLC

This page provides the complete NPI Profile along with additional information for Monzermd Llc, an internist established in San Antonio, Texas operating as a Internal Medicine, focusing in critical care medicine . The healthcare provider is registered in the NPI registry with number 1285561399 assigned on May 2026. The practitioner's primary taxonomy code is 207RC0200X. The provider is registered as an organization and their NPI record was last updated May 2026. 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 Khalid Monzer Md (Owner)

NPI
1285561399
Provider Name
MONZERMD LLC
Entity Type
Organization
Location Address
3636 MEDICAL DR SAN ANTONIO, TX 78229
Location Phone
(917) 628-7982
Mailing Address
15802 SEEKERS ST SAN ANTONIO, TX 78255
Mailing Phone
(917) 628-7982
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-05-2026
Last Update Date
05-05-2026
Code Navigator

An internist like Monzermd Llc 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 Critical Care Medicine

Taxonomy Code
207RC0200X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

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

KHALID MONZER MD

Authorized Official Title
OWNER
Authorized Official Phone
(917) 628-7982

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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 1285561399, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
5
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
6
Unchanged
Pos 7
1
Doubled → 2
Pos 8
3
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
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 5 → 10 → 1 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 6 + 5 + 1 + 0 + 6 + 2 + 3 + 1 + 8 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1285561399.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Physical Therapy Assistant
3636 MEDICAL DR
SAN ANTONIO, TX 78229
Hospitalist
3636 MEDICAL DR
SAN ANTONIO, TX 78229
Registered Nurse (Critical Care Medicine)
3636 MEDICAL DR
SAN ANTONIO, TX 78229
Long Term Care Hospital
3636 MEDICAL DR
SAN ANTONIO, TX 78229

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1285561399, enumerated as an "organization" on May 05, 2026.

The provider is located at 3636 MEDICAL DR SAN ANTONIO, TX 78229 and the phone number is (917) 628-7982.

Internal Medicine with taxonomy code 207RC0200X and a focus in Critical Care Medicine.