CARLOS M SANTIAGO MD
NPI 1720208804
General Practice in Bayamon, PR

NPI Status: Active since April 30, 2007

Contact Information

300 AVE LAUREL # 100
BAYAMON, PR
ZIP 00956
Phone: (787) 787-5151

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  • Individual
  • Male
  • General Practice
  • PECOS Enrolled

About CARLOS SANTIAGO

This page provides the complete NPI Profile along with additional information for Carlos Santiago, a primary care provider established in Bayamon, Puerto Rico with a medical specialization in General Practice. The healthcare provider is registered in the NPI registry with number 1720208804 assigned on April 2007. The practitioner's primary taxonomy code is 208D00000X with license number 7685 (PR). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1720208804
Provider Name
CARLOS M SANTIAGO MD
Gender
Male
Entity Type
Individual
Location Address
300 AVE LAUREL # 100 BAYAMON, PR 00956
Location Phone
(787) 787-5151
Mailing Address
PO BOX 3656 BAYAMON, PR 00958
Mailing Phone
(787) 479-2539
Is Sole Proprietor?
No
Enumeration Date
04-30-2007
Last Update Date
08-15-2025
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A primary care provider (PCP) like Carlos Santiago sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

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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

General Practice

Taxonomy Code
208D00000X
Type
Allopathic & Osteopathic Physicians
License No.
7685
License State
PR
Taxonomy Description
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

Medicare Participation & PECOS Enrollment Status

Carlos Santiago is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

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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 1720208804, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

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

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 4 + 0 + 4 + 0 + 1 + 6 + 8 + 0 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1720208804.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1720208804, enumerated as an "individual" on April 30, 2007.

The provider is located at 300 AVE LAUREL # 100 BAYAMON, PR 00956 and the phone number is (787) 787-5151.

General Practice with taxonomy code 208D00000X.