DR. WILLIAM HENRY PARKER VI MD
NPI 1558921189
Internal Medicine - Clinical Cardiac Electrophysiology in Iowa City, IA
NPI Status: Active since June 17, 2019
Contact Information
200 HAWKINS DR
IOWA CITY, IA
ZIP 52242
Phone: (319) 384-8001
Fax: (319) 353-6343
- Individual
- Male
- Internal Medicine
- Clinical Cardiac Electrophysiology
About WILLIAM PARKER
This page provides the complete NPI Profile along with additional information for William Parker, an internist established in Iowa City, Iowa with a medical specialization in Internal Medicine, focusing in clinical cardiac electrophysiology . The healthcare provider is registered in the NPI registry with number 1558921189 assigned on June 2019. The practitioner's primary taxonomy code is 207RC0001X with license number 35.153818 (OH). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1558921189
- Provider Name
- DR. WILLIAM HENRY PARKER VI MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 200 HAWKINS DR IOWA CITY, IA 52242
- Location Phone
- (319) 384-8001
- Location Fax
- (319) 353-6343
- Mailing Address
- 200 HAWKINS DR IOWA CITY, IA 52242
- Mailing Phone
- (319) 384-8001
- Mailing Fax
- (319) 353-6343
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 06-17-2019
- Last Update Date
- 05-29-2025
- Code Navigator
An internist like William Parker 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 Clinical Cardiac Electrophysiology
- Taxonomy Code
- 207RC0001X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 35.153818
- License State
- OH
- Taxonomy Description
- A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.
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) |
|---|---|---|---|---|
| 1 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | 57.248517 (OH) |
| 2 | 207RC0000X | Allopathic & Osteopathic Physicians | Internal Medicine | R-12596 (IA) |
| 3 | 207RC0000X | Allopathic & Osteopathic Physicians | Internal Medicine | MD-51967 (IA) |
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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 1558921189, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 61 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1558921189, enumerated as an "individual" on June 17, 2019.
The provider is located at 200 HAWKINS DR IOWA CITY, IA 52242 and the phone number is (319) 384-8001.
Internal Medicine with taxonomy code 207RC0001X and a focus in Clinical Cardiac Electrophysiology.
