MRS. VIRGINIA MARGARITA SANTIAGO MERCADO BSMT
NPI 1326024126
Clinical Medical Laboratory in San Juan, PR
NPI Status: Active since December 22, 2005
Contact Information
369 AVE DOMENECH
SAN JUAN, PR
ZIP 00918
Phone: (787) 765-2556
Fax: (787) 758-0308
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Clinical Medical Laboratory
About VIRGINIA SANTIAGO MERCADO
This page provides the complete NPI Profile along with additional information for Virginia Santiago Mercado, a provider established in San Juan, Puerto Rico with a medical specialization in Clinical Medical Laboratory. The healthcare provider is registered in the NPI registry with number 1326024126 assigned on December 2005. The practitioner's primary taxonomy code is 291U00000X with license number 315 (PR). The provider is registered as an individual and her NPI record was last updated June 2026.
- NPI
- 1326024126
- Provider Name
- MRS. VIRGINIA MARGARITA SANTIAGO MERCADO BSMT
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 369 AVE DOMENECH SAN JUAN, PR 00918
- Location Phone
- (787) 765-2556
- Location Fax
- (787) 758-0308
- Mailing Address
- 369 DOMENECH AVE. SAN JUAN, PR 00918
- Mailing Phone
- (787) 765-2556
- Mailing Fax
- (787) 758-0308
- Is Sole Proprietor?
- No
- Enumeration Date
- 12-22-2005
- Last Update Date
- 06-12-2026
- Code Navigator
Providers like Virginia Santiago Mercado work at healthcare facilities that may perform a wide range of laboratory procedures, assisted by doctors and medical technologists. Laboratories can be categorized according to their function as common diagnostic labs or specialty labs that conduct specialized or confirmatory tests. Different clinical laboratories could specialize in clinical chemistry, clinical microbiology, hematology, serology, clinical microscopy, cytopathology, molecular biology, or public health. Please inquire directly with this provider to confirm their test menu.
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
Clinical Medical Laboratory
- Taxonomy Code
- 291U00000X
- Type
- Laboratories
- License No.
- 315
- License State
- PR
- Taxonomy Description
- (1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Bacterial culture, any other source except urine, blood or stool, aerobic
Blood test, clotting time
Blood test, comprehensive group of blood chemicals
Blood test, lipids (cholesterol and triglycerides)
Blood test, thyroid stimulating hormone (tsh)
Coagulation assessment blood test, plasma or whole blood
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
Cyanocobalamin (vitamin b-12) level
Hemoglobin a1c level
Insertion of needle into vein for collection of blood sample
Manual urinalysis test with examination using microscope, non-automated
Psa (prostate specific antigen) measurement, total
Red blood cell sedimentation rate, to detect inflammation, non-automated
Thyroxine (thyroid chemical), free
Thyroxine (thyroid chemical), total
Urine microalbumin (protein) level
Vitamin d-3 level
A bacterial culture is a test that helps identify harmful bacteria in your body. In this case, a sample from any part other than urine, blood or stool is collected. The sample is placed in a special environment to promote bacteria growth. It helps in diagnosing infections and determining the best treatment.
This service was performed 37 times for 21 patientsA clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.
This service was performed 14 times for 11 patientsA comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
This service was performed 109 times for 53 patientsA lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.
This service was performed 97 times for 50 patientsA TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.
This service was performed 81 times for 47 patientsA coagulation assessment blood test evaluates how well your blood clots, helping identify potential bleeding or clotting disorders. This test uses a sample of your plasma or whole blood. It's a standard procedure to ensure your body's clotting process is functioning properly.
This service was performed 14 times for 11 patientsA Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
This service was performed 120 times for 53 patientsA Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.
This service was performed 29 times for 23 patientsHemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
This service was performed 74 times for 42 patientsThis procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
This service was performed 151 times for 58 patientsA manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.
This service was performed 97 times for 46 patientsPSA measurement is a simple blood test that checks for a specific protein produced by your body. High levels could indicate a health issue that needs further investigation. It's often used to monitor general wellness and is part of routine health screening.
This service was performed 32 times for 18 patientsThe Red Blood Cell Sedimentation Rate test measures how quickly red blood cells settle at the bottom of a test tube. If they settle faster than normal, it may indicate inflammation in the body. This test is non-automated, meaning it's manually performed by a lab technician.
This service was performed 32 times for 18 patientsThe Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.
This service was performed 30 times for 21 patientsA Thyroxine (thyroid chemical) total test measures the amount of thyroxine, a hormone produced by your thyroid gland, in your blood. This hormone helps regulate your body's metabolism. The test can help diagnose thyroid disorders, such as hypothyroidism or hyperthyroidism.
This service was performed 17 times for 11 patientsThe urine microalbumin level test measures the amount of a protein called albumin in your urine. This test helps to detect early signs of kidney damage. High levels of albumin may suggest your kidneys aren't functioning properly. It's a simple, non-invasive test that involves providing a urine sample.
This service was performed 32 times for 25 patientsA Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.
This service was performed 38 times for 33 patientsReviews for MRS. VIRGINIA MARGARITA SANTIAGO MERCADO BSMT
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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 1326024126, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).
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 54 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
SAN JUAN, PR 00918
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1326024126, enumerated as an "individual" on December 22, 2005.
The provider is located at 369 AVE DOMENECH SAN JUAN, PR 00918 and the phone number is (787) 765-2556.
Clinical Medical Laboratory with taxonomy code 291U00000X.