MARK CHRISTOPHER DOWLING M.D.
NPI 1679537328
Radiology - Diagnostic Radiology in Santa Rosa, CA

NPI Status: Active since April 12, 2006

Contact Information

3325 CHANATE RD
SANTA ROSA, CA
ZIP 95404
Phone: (707) 576-4489
Fax: (707) 573-5213

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  • Individual
  • Male
  • Radiology
  • Diagnostic Radiology

About MARK DOWLING

This page provides the complete NPI Profile along with additional information for Mark Dowling, a provider established in Santa Rosa, California with a medical specialization in Radiology, focusing in diagnostic radiology . The healthcare provider is registered in the NPI registry with number 1679537328 assigned on April 2006. The practitioner's primary taxonomy code is 2085R0202X with license number G80355 (CA). The provider is registered as an individual and his NPI record was last updated 9 years ago.

NPI
1679537328
Provider Name
MARK CHRISTOPHER DOWLING M.D.
Gender
Male
Entity Type
Individual
Location Address
3325 CHANATE RD SANTA ROSA, CA 95404
Location Phone
(707) 576-4489
Location Fax
(707) 573-5213
Mailing Address
1115 VALDEZ WAY FREMONT, CA 94539
Mailing Phone
(510) 651-1617
Is Sole Proprietor?
No
Enumeration Date
04-12-2006
Last Update Date
02-17-2017
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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

Radiology Diagnostic Radiology

Taxonomy Code
2085R0202X
Type
Allopathic & Osteopathic Physicians
License No.
G80355
License State
CA
Taxonomy Description
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

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)
1174400000XOther Service Providers

Specialist

 

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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 1679537328, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
3
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
Check
8
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 7 → 14 → 5 5 → 10 → 1 7 → 14 → 5 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 1 + 0 + 3 + 1 + 4 + 3 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1679537328.

Other Providers at the Same Location


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

Pathology (Anatomic Pathology)
3325 CHANATE RD
SANTA ROSA, CA 95404
Pathology (Anatomic Pathology)
3325 CHANATE RD
SANTA ROSA, CA 95404
Radiology (Diagnostic Radiology)
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Anesthesiology
3325 CHANATE RD
SANTA ROSA, CA 95404
Nurse Practitioner (Family)
3325 CHANATE RD
SANTA ROSA, CA 95404
Physical Therapist (Orthopedic)
3325 CHANATE RD
SANTA ROSA, CA 95404
Physical Therapist
3325 CHANATE RD
SANTA ROSA, CA 95404
Hospitalist
3325 CHANATE RD
SANTA ROSA, CA 95404
Radiology (Diagnostic Radiology)
3325 CHANATE RD
SANTA ROSA, CA 95404
Nurse Practitioner
3325 CHANATE RD
SANTA ROSA, CA 95404
Physical Therapist
3325 CHANATE RD
SANTA ROSA, CA 95404
Internal Medicine
3325 CHANATE RD
SANTA ROSA, CA 95404
General Acute Care Hospital
3325 CHANATE RD
SANTA ROSA, CA 95404
General Acute Care Hospital
3325 CHANATE RD
SANTA ROSA, CA 95404

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679537328, enumerated as an "individual" on April 12, 2006.

The provider is located at 3325 CHANATE RD SANTA ROSA, CA 95404 and the phone number is (707) 576-4489.

Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.