Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARIA ATHENA MATONDO RIEGO DO
NPI 1639706294
Internal Medicine - Critical Care Medicine in Cleveland, OH

Active since March 24, 2020
18101 LORAIN AVE, CLEVELAND, OH 44111(216) 476-7000 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 7, 2026, Apr 6, 2020, Mar 31, 2020 and 1 more (4 updates tracked since 2020).

  • Individual
  • Female
  • Internal Medicine
  • Critical Care Medicine

About MARIA ATHENA RIEGO

This page provides the complete NPI Profile along with additional information for Maria Athena Riego, an internist established in Cleveland, Ohio with a medical specialization in Internal Medicine, focusing in critical care medicine . The healthcare provider is registered in the NPI registry with number 1639706294 assigned on March 2020. The practitioner's primary taxonomy code is 207RC0200X with license number 34.018696 (OH). The provider is registered as an individual and her NPI record was last updated July 2026.

NPI
1639706294
Provider Name
MARIA ATHENA MATONDO RIEGO DO
Other Name
ATHENA RIEGO
Other Name Type
Other Name (5)
Gender
Female
Entity Type
Individual
Location Address
18101 LORAIN AVE CLEVELAND, OH 44111
Location Phone
(216) 476-7000
Mailing Address
9500 EUCLID AVE CLEVELAND, OH 44195
Mailing Phone
(216) 444-2200
Is Sole Proprietor?
No
Enumeration Date
03-24-2020
Last Update Date
07-07-2026
Code Navigator

An internist like Maria Athena Riego 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
License No.
34.018696
License State
OH
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207RP1001XAllopathic & Osteopathic Physicians

Internal Medicine
Pulmonary Disease

34.018696 (OH)

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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 1639706294, 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 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
6
Unchanged
Pos 3
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
0
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
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 3 → 6 7 → 14 → 5 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 + 6 + 6 + 9 + 1 + 4 + 0 + 1 + 2 + 2 + 1 + 8 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1639706294.

Other Providers at the Same Location


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

Anesthesiology
18101 LORAIN AVE
CLEVELAND, OH 44111
Anesthesiology
18101 LORAIN AVE
CLEVELAND, OH 44111
Anesthesiology
18101 LORAIN AVE
CLEVELAND, OH 44111
Anesthesiology
18101 LORAIN AVE
CLEVELAND, OH 44111
Anesthesiology
18101 LORAIN AVE
CLEVELAND, OH 44111
Anesthesiology
18101 LORAIN AVE
CLEVELAND, OH 44111
Physician Assistant
18101 LORAIN AVE
CLEVELAND, OH 44111
Physician Assistant
18101 LORAIN AVE
CLEVELAND, OH 44111
Nurse Practitioner
18101 LORAIN AVE
CLEVELAND, OH 44111
Advanced Practice Midwife
18101 LORAIN AVE
CLEVELAND, OH 44111
Clinical Nurse Specialist
18101 LORAIN AVE
CLEVELAND, OH 44111
Nurse Practitioner
18101 LORAIN AVE
CLEVELAND, OH 44111
Nurse Practitioner
18101 LORAIN AVE
CLEVELAND, OH 44111
Nurse Practitioner
18101 LORAIN AVE
CLEVELAND, OH 44111
Nurse Practitioner
18101 LORAIN AVE
CLEVELAND, OH 44111
Surgery
18101 LORAIN AVE, DEPARTMENT OF SURGERY
CLEVELAND, OH 44111
Pediatrics (Adolescent Medicine)
18101 LORAIN AVE
CLEVELAND, OH 44111
Pediatrics
18101 LORAIN AVE
CLEVELAND, OH 44111
Pediatrics
18101 LORAIN AVE
CLEVELAND, OH 44111
Pediatrics
18101 LORAIN AVE
CLEVELAND, OH 44111

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639706294, enumerated as an "individual" on March 24, 2020.

The provider is located at 18101 LORAIN AVE CLEVELAND, OH 44111 and the phone number is (216) 476-7000.

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