PHILIP S. GUZELIAN MD
NPI 1619067394
Internal Medicine - Gastroenterology in Denver, CO

NPI Status: Active since October 13, 2006

Contact Information

1055 CLERMONT ST
DENVER, CO
ZIP 80220
Phone: (303) 493-7000

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  • Individual
  • Male
  • Internal Medicine
  • Gastroenterology

About PHILIP GUZELIAN

This page provides the complete NPI Profile along with additional information for Philip Guzelian, an internist established in Denver, Colorado with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1619067394 assigned on October 2006. The practitioner's primary taxonomy code is 207RG0100X with license number 32325 (CO). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1619067394
Provider Name
PHILIP S. GUZELIAN MD
Gender
Male
Entity Type
Individual
Location Address
1055 CLERMONT ST DENVER, CO 80220
Location Phone
(303) 493-7000
Mailing Address
13611 E COLFAX AVE AURORA, CO 80045
Mailing Phone
(303) 493-7000
Is Sole Proprietor?
No
Enumeration Date
10-13-2006
Last Update Date
07-08-2007
Code Navigator

An internist like Philip Guzelian 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 Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
32325
License State
CO
Taxonomy Description
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

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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 1619067394, 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
1
Doubled → 2
Pos 4
9
Unchanged
Pos 5
0
Doubled → 0
Pos 6
6
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
3
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 1 → 2 0 → 0 7 → 14 → 5 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 + 2 + 9 + 0 + 6 + 1 + 4 + 3 + 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 1619067394.

Other Providers at the Same Location


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

Pharmacist
1055 CLERMONT ST, HBPC, BUILDING 4
DENVER, CO 80220
Pharmacist (Pharmacotherapy)
1055 CLERMONT ST, #119
DENVER, CO 80220
General Acute Care Hospital
1055 CLERMONT ST, LAB (113)
DENVER, CO 80220
Pharmacist (Pharmacotherapy)
1055 CLERMONT ST
DENVER, CO 80220
Nurse Practitioner (Family)
1055 CLERMONT ST, MAILSTOP 118
DENVER, CO 80220
Pharmacist
1055 CLERMONT ST, PHARMACY DEPARTMENT 119
DENVER, CO 80220
Pharmacist (Pharmacotherapy)
1055 CLERMONT ST, DENVER VA MEDICAL CENTER (119)
DENVER, CO 80220
Psychiatry & Neurology (Geriatric Psychiatry)
1055 CLERMONT ST
DENVER, CO 80220
Internal Medicine
1055 CLERMONT ST, DENVER VAMC-BOX 11B
DENVER, CO 80220
Psychiatry & Neurology (Psychiatry)
1055 CLERMONT ST, ROOM 8D128
DENVER, CO 80220
Pharmacist
1055 CLERMONT ST
DENVER, CO 80220
Psychologist (Clinical)
1055 CLERMONT ST, PSYCHOLOGY 116B
DENVER, CO 80220
Psychologist (Clinical)
1055 CLERMONT ST, BOX 116B
DENVER, CO 80220
Nurse Practitioner
1055 CLERMONT ST
DENVER, CO 80220
Dentist (Prosthodontics)
1055 CLERMONT ST, VA MEDICAL CENTER (160)
DENVER, CO 80220
Nurse Practitioner (Community Health)
1055 CLERMONT ST
DENVER, CO 80220
Pharmacist (Pharmacotherapy)
1055 CLERMONT ST
DENVER, CO 80220
Internal Medicine
1055 CLERMONT ST
DENVER, CO 80220
Psychiatry & Neurology (Psychiatry)
1055 CLERMONT ST, 116D
DENVER, CO 80220
Nurse Practitioner (Adult Health)
1055 CLERMONT ST, HBPC - G-118
DENVER, CO 80220

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1619067394, enumerated as an "individual" on October 13, 2006.

The provider is located at 1055 CLERMONT ST DENVER, CO 80220 and the phone number is (303) 493-7000.

Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.