ELLEN MCDONALD, M.D., INC.
NPI 1639304843
Internal Medicine in Pasadena, CA

NPI Status: Active since May 18, 2009

Contact Information

800 FAIRMOUNT AVE
SUITE 210
PASADENA, CA
ZIP 91105
Phone: (626) 872-4195
Fax: (626) 628-1836

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  • Organization
  • Internal Medicine

About ELLEN MCDONALD, M.D., INC.

This page provides the complete NPI Profile along with additional information for Ellen Mcdonald, M.d., Inc., an internist established in Pasadena, California operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1639304843 assigned on May 2009. The practitioner's primary taxonomy code is 207R00000X with license number A102543 (CA). The provider is registered as an organization and their NPI record was last updated 16 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 Dr. Ellen Kathleen Mcdonald M.d. (President)

NPI
1639304843
Provider Name
ELLEN MCDONALD, M.D., INC.
Entity Type
Organization
Location Address
800 FAIRMOUNT AVE SUITE 210 PASADENA, CA 91105
Location Phone
(626) 872-4195
Location Fax
(626) 628-1836
Mailing Address
800 FAIRMOUNT AVE SUITE 210 PASADENA, CA 91105
Mailing Phone
(626) 872-4195
Mailing Fax
(626) 628-1836
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-18-2009
Last Update Date
12-02-2010
Code Navigator

An internist like Ellen Mcdonald, M.d., Inc. 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.
A102543
License State
CA
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.

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

DR. ELLEN KATHLEEN MCDONALD M.D.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(626) 872-4195

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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 1639304843, we treat the final digit (3) 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).

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
3
Doubled → 6
Pos 6
0
Unchanged
Pos 7
4
Doubled → 8
Pos 8
8
Unchanged
Pos 9
4
Doubled → 8
Check
3
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 3 → 6 4 → 8 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 6 + 0 + 8 + 8 + 8 + 24 = 77

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

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1639304843.

Other Providers at the Same Location


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

Dermatology
800 FAIRMOUNT AVE, SUITE 310
PASADENA, CA 91105
Obstetrics & Gynecology
800 FAIRMOUNT AVE, SUITE 410A
PASADENA, CA 91105
Internal Medicine (Pulmonary Disease)
800 FAIRMOUNT AVE
PASADENA, CA 91105
Ophthalmology
800 FAIRMOUNT AVE, 219
PASADENA, CA 91105
Obstetrics & Gynecology
800 FAIRMOUNT AVE, SUITE 220
PASADENA, CA 91105
Dermatology
800 FAIRMOUNT AVE, STE 425
PASADENA, CA 91105
Dermatology
800 FAIRMOUNT AVE, SUITE 425
PASADENA, CA 91105
Pediatrics
800 FAIRMOUNT AVE, STE 110
PASADENA, CA 91105
Pediatrics
800 FAIRMOUNT AVE, STE. 110
PASADENA, CA 91105
Ophthalmology
800 FAIRMOUNT AVE, SUITE 101
PASADENA, CA 91105
Specialist
800 FAIRMOUNT AVE, 215
PASADENA, CA 91105
Internal Medicine
800 FAIRMOUNT AVE, SUITE 210
PASADENA, CA 91105
Physical Therapist
800 FAIRMOUNT AVE, SUITE 322
PASADENA, CA 91105
Ophthalmology
800 FAIRMOUNT AVE, SUITE 101
PASADENA, CA 91105
Dentist
800 FAIRMOUNT AVE, SUITE 203
PASADENA, CA 91105
Dentist (General Practice)
800 FAIRMOUNT AVE, #100
PASADENA, CA 91105
Internal Medicine (Infectious Disease)
800 FAIRMOUNT AVE, STE 205
PASADENA, CA 91105
General Practice
800 FAIRMOUNT AVE, 210
PASADENA, CA 91105
Internal Medicine (Infectious Disease)
800 FAIRMOUNT AVE, 205
PASADENA, CA 91105
Obstetrics & Gynecology (Gynecologic Oncology)
800 FAIRMOUNT AVE, STE 220
PASADENA, CA 91105

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639304843, enumerated as an "organization" on May 18, 2009.

The provider is located at 800 FAIRMOUNT AVE SUITE 210 PASADENA, CA 91105 and the phone number is (626) 872-4195.

Internal Medicine with taxonomy code 207R00000X.