CANCER CENTER OF GUAM LLP SAMUEL J FRIEDMAN GEN PTR
NPI 1952670382
Internal Medicine - Hematology & Oncology in Tamuning, GU

NPI Status: Active since December 13, 2011

Contact Information

416 CHALAN SAN ANTONIO
GOOD SAMARITAN BUILDING
TAMUNING, GU
ZIP 96913
Phone: (671) 647-4656
Fax: (671) 647-4660

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NPPES record last updated: November 6, 2014. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Organization
  • Internal Medicine
  • Hematology & Oncology

About CANCER CENTER OF GUAM LLP SAMUEL J FRIEDMAN GEN PTR

This page provides the complete NPI Profile along with additional information for Cancer Center Of Guam Llp Samuel J Friedman Gen Ptr, an internist established in Tamuning, Guam operating as a Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1952670382 assigned on December 2011. The practitioner's primary taxonomy code is 207RH0003X. The provider is registered as an organization and their NPI record was last updated 12 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 Diana Leon Guerrero (Business Manager)

NPI
1952670382
Provider Name
CANCER CENTER OF GUAM LLP SAMUEL J FRIEDMAN GEN PTR
Entity Type
Organization
Location Address
416 CHALAN SAN ANTONIO GOOD SAMARITAN BUILDING TAMUNING, GU 96913
Location Phone
(671) 647-4656
Location Fax
(671) 647-4660
Mailing Address
633 GOV. CARLOS CAMACHO RD., B5 GUAM MEDICAL PLAZA TAMUNING, GU 96913
Mailing Phone
(671) 647-4656
Mailing Fax
(671) 647-4660
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
12-13-2011
Last Update Date
11-06-2014
Code Navigator

An internist like Cancer Center Of Guam Llp Samuel J Friedman Gen Ptr 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 Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

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

DIANA LEON GUERRERO

Authorized Official Title
BUSINESS MANAGER
Authorized Official Phone
(671) 647-4656

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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 1952670382, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
9
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
2
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
7
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
2
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 6 → 12 → 3 0 → 0 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 0 + 2 + 1 + 2 + 7 + 0 + 3 + 1 + 6 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1952670382.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Pharmacist
416 CHALAN SAN ANTONIO
TAMUNING, GU 96913
Pharmacy (Clinic Pharmacy)
416 CHALAN SAN ANTONIO
TAMUNING, GU 96913
Clinic/Center
416 CHALAN SAN ANTONIO
TAMUNING, GU 96913

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1952670382, enumerated as an "organization" on December 13, 2011.

The provider is located at 416 CHALAN SAN ANTONIO GOOD SAMARITAN BUILDING TAMUNING, GU 96913 and the phone number is (671) 647-4656.

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.