WILLIAM M HEINZ M.D.
NPI 1164423117
Internal Medicine - Sports Medicine in Portland, ME

NPI Status: Active since August 02, 2005

Contact Information

33 SEWALL ST
PORTLAND, ME
ZIP 04102
Phone: (207) 828-2100

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Internal Medicine
Sports Medicine

About WILLIAM HEINZ

This page provides the complete NPI Profile along with additional information for William Heinz, an internist established in Portland, Maine with a medical specialization in Internal Medicine, focusing in sports medicine . The healthcare provider is registered in the NPI registry with number 1164423117 assigned on August 2005. The practitioner's primary taxonomy code is 207RS0010X with license number MD12812 (ME). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI: 1164423117
Provider Name: WILLIAM M HEINZ M.D.
Gender: Male
Entity Type: Individual
Location Address: 33 SEWALL ST PORTLAND, ME 04102
Location Phone: (207) 828-2100
Mailing Address: 324 GANNETT DR STE 200 SOUTH PORTLAND, ME 04106
Mailing Phone: (207) 482-7800
Is Sole Proprietor?: No
Enumeration Date: 08-02-2005
Last Update Date: 11-10-2015
Code Navigator

An internist like William Heinz 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 Sports Medicine
Taxonomy Code: 207RS0010X
Type: Allopathic & Osteopathic Physicians
License No.: MD12812
License State: ME
Taxonomy Description: An internist trained to be responsible for continuous care in the field of sports medicine, not only for the enhancement of health and fitness, but also for the prevention of injury and illness. A sports medicine physician must have knowledge and experience in the promotion of wellness and the prevention of injury. Knowledge about special areas of medicine such as exercise physiology, biomechanics, nutrition, psychology, physical rehabilitation, epidemiology, physical evaluation, injuries (treatment and prevention and referral practice) and the role of exercise in promoting a healthy lifestyle are essential to the practice of sports medicine. The sports medicine physician requires special education to provide the knowledge to improve the healthcare of the individual.

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 1164423117, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 2

Check

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 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 + 1 + 1 + 2 + 4 + 8 + 2 + 6 + 1 + 2 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1164423117.