DR. DOUGLAS MCCALLUM M.D.
NPI 1801893110
Internal Medicine in Denver, CO

NPI Status: Active since June 30, 2005

Contact Information

425 S CHERRY ST
SUITE 510
DENVER, CO
ZIP 80246
Phone: (303) 388-4076
Fax: (303) 320-0439

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  • Individual
  • Male
  • Internal Medicine

About DOUGLAS MCCALLUM

This page provides the complete NPI Profile along with additional information for Douglas Mccallum, an internist established in Denver, Colorado with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1801893110 assigned on June 2005. The practitioner's primary taxonomy code is 207R00000X with license number 21565 (CO). The provider is registered as an individual and his NPI record was last updated 13 years ago.

NPI
1801893110
Provider Name
DR. DOUGLAS MCCALLUM M.D.
Gender
Male
Entity Type
Individual
Location Address
425 S CHERRY ST SUITE 510 DENVER, CO 80246
Location Phone
(303) 388-4076
Location Fax
(303) 320-0439
Mailing Address
1707 COLE BLVD STE 100 GOLDEN, CO 80401
Mailing Phone
(303) 716-8013
Mailing Fax
(303) 320-0439
Is Sole Proprietor?
No
Enumeration Date
06-30-2005
Last Update Date
10-04-2013
Code Navigator

An internist like Douglas Mccallum 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

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
21565
License State
CO
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
D23952MEDICARE UPIN (02)CO 
N1654MEDICARE ID-TYPE UNSPECIFIED (04)CO 
01215656MEDICAID (05)CO 

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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 1801893110, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 1 + 6 + 9 + 6 + 1 + 2 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1801893110.

Other Providers at the Same Location


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

Specialist
425 S CHERRY ST, SUITE 321
DENVER, CO 80246
Psychiatry & Neurology (Child & Adolescent Psychiatry)
425 S CHERRY ST, #600
DENVER, CO 80246
Psychiatry & Neurology (Psychiatry)
425 S CHERRY ST, SUITE 635
DENVER, CO 80246
Psychologist (Clinical)
425 S CHERRY ST, SUITE 600
DENVER, CO 80246
Physical Therapist
425 S CHERRY ST, STE. 640
DENVER, CO 80246
Physical Therapist
425 S CHERRY ST, STE 640
DENVER, CO 80246
Physical Therapist
425 S CHERRY ST, SUITE 640
DENVER, CO 80246
Dentist (General Practice)
425 S CHERRY ST, #210
DENVER, CO 80246
Psychologist (Clinical)
425 S CHERRY ST, SUITE 440
DENVER, CO 80246
Psychologist (Clinical)
425 S CHERRY ST, SUITE 440
DENVER, CO 80246
Psychiatry & Neurology (Child & Adolescent Psychiatry)
425 S CHERRY ST, SUITE 920
DENVER, CO 80246
Chiropractor
425 S CHERRY ST, SUITE 580
DENVER, CO 80246
Chiropractor
425 S CHERRY ST, SUITE 580
DENVER, CO 80246
Social Worker (Clinical)
425 S CHERRY ST, 645
DENVER, CO 80246
Psychiatry & Neurology (Psychiatry)
425 S CHERRY ST, SUITE 810
DENVER, CO 80246
Chiropractor
425 S CHERRY ST, SUITE 307
DENVER, CO 80246
Massage Therapist
425 S CHERRY ST
DENVER, CO 80246
Psychologist
425 S CHERRY ST, SUITE 720
DENVER, CO 80246
Specialist
425 S CHERRY ST, SUITE 907
DENVER, CO 80246
Plastic Surgery
425 S CHERRY ST, SUITE 321
DENVER, CO 80246

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801893110, enumerated as an "individual" on June 30, 2005.

The provider is located at 425 S CHERRY ST SUITE 510 DENVER, CO 80246 and the phone number is (303) 388-4076.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.