DR. MARK HARRIS MELLOW M.D.
NPI 1366426298
Internal Medicine - Gastroenterology in Oklahoma City, OK

NPI Status: Active since December 05, 2005

Contact Information

3366 NW EXPRESSWAY ST
650
OKLAHOMA CITY, OK
ZIP 73112
Phone: (405) 713-4430
Fax: (405) 713-4429

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  • Individual
  • Male
  • Internal Medicine
  • Gastroenterology

About MARK MELLOW

This page provides the complete NPI Profile along with additional information for Mark Mellow, an internist established in Oklahoma City, Oklahoma with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1366426298 assigned on December 2005. The practitioner's primary taxonomy code is 207RG0100X with license number 14105 (OK). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI
1366426298
Provider Name
DR. MARK HARRIS MELLOW M.D.
Gender
Male
Entity Type
Individual
Location Address
3366 NW EXPRESSWAY ST 650 OKLAHOMA CITY, OK 73112
Location Phone
(405) 713-4430
Location Fax
(405) 713-4429
Mailing Address
5300 N INDEPENDENCE AVE SUITE 280 OKLAHOMA CITY, OK 73112
Mailing Phone
(405) 713-4430
Mailing Fax
(405) 713-4429
Is Sole Proprietor?
No
Enumeration Date
12-05-2005
Last Update Date
04-02-2014
Code Navigator

An internist like Mark Mellow 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.
14105
License State
OK
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.

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)
1207RG0100XAllopathic & Osteopathic Physicians

Internal Medicine
Gastroenterology

36011 (MA)
2207RG0100XAllopathic & Osteopathic Physicians

Internal Medicine
Gastroenterology

108354 (NY)

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
D35033MEDICARE UPIN (02) 
100019460AMEDICAID (05)OK 

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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 1366426298, 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
3
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
6
Unchanged
Pos 5
4
Doubled → 8
Pos 6
2
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
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 6 → 12 → 3 4 → 8 6 → 12 → 3 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 2 + 6 + 8 + 2 + 1 + 2 + 2 + 1 + 8 + 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 1366426298.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Specialist
3366 NW EXPRESSWAY ST, SUITE 660
OKLAHOMA CITY, OK 73112
Specialist
3366 NW EXPRESSWAY ST, STE 660
OKLAHOMA CITY, OK 73112
Specialist
3366 NW EXPRESSWAY ST, SUITE 660
OKLAHOMA CITY, OK 73112
Physician Assistant (Medical)
3366 NW EXPRESSWAY ST, SUITE 330
OKLAHOMA CITY, OK 73112
Specialist
3366 NW EXPRESSWAY ST, SUITE 720
OKLAHOMA CITY, OK 73112
Pediatrics (Pediatric Pulmonology)
3366 NW EXPRESSWAY ST, SUITE 330
OKLAHOMA CITY, OK 73112
Internal Medicine (Nephrology)
3366 NW EXPRESSWAY ST, SUITE 550
OKLAHOMA CITY, OK 73112
Internal Medicine (Nephrology)
3366 NW EXPRESSWAY ST, SUITE 208
OKLAHOMA CITY, OK 73112
Internal Medicine (Cardiovascular Disease)
3366 NW EXPRESSWAY ST, SUITE 280
OKLAHOMA CITY, OK 73112
Medical Genetics, Ph.D. Medical Genetics
3366 NW EXPRESSWAY ST, SUITE 280
OKLAHOMA CITY, OK 73112

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1366426298, enumerated as an "individual" on December 05, 2005.

The provider is located at 3366 NW EXPRESSWAY ST 650 OKLAHOMA CITY, OK 73112 and the phone number is (405) 713-4430.

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

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