DR. WILLIAM J HOOKER O.D.
NPI 1639167505
Optometrist - Occupational Vision in Haslett, MI
NPI Status: Active since October 13, 2005
Contact Information
1536 HASLETT RD
HASLETT, MI
ZIP 48840
Phone: (517) 339-4100
Fax: (517) 339-4199
- Individual
- Male
- Optometrist
- Occupational Vision
About WILLIAM HOOKER
This page provides the complete NPI Profile along with additional information for William Hooker, a provider established in Haslett, Michigan with a medical specialization in Optometrist, focusing in occupational vision . The healthcare provider is registered in the NPI registry with number 1639167505 assigned on October 2005. The practitioner's primary taxonomy code is 152WX0102X with license number 4901002909 (MI). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1639167505
- Provider Name
- DR. WILLIAM J HOOKER O.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1536 HASLETT RD HASLETT, MI 48840
- Location Phone
- (517) 339-4100
- Location Fax
- (517) 339-4199
- Mailing Address
- PO BOX 621 HASLETT, MI 48840
- Mailing Phone
- (517) 339-4100
- Mailing Fax
- (517) 339-4199
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 10-13-2005
- Last Update Date
- 09-11-2025
- Code Navigator
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
Optometrist Occupational Vision
- Taxonomy Code
- 152WX0102X
- Type
- Eye and Vision Services Providers
- License No.
- 4901002909
- License State
- MI
- Taxonomy Description
- Optometrists who work in Occupational Vision, the branch of environmental optometry, consider all aspects of the relationship between work and vision, visual performances, eye safety, and health.
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 | 152W00000X | Eye and Vision Services Providers | Optometrist | 4901002909 (MI) |
| 2 | 152WC0802X | Eye and Vision Services Providers | Optometrist | 4901002909 (MI) |
| 3 | 152WL0500X | Eye and Vision Services Providers | Optometrist | 4901002909 (MI) |
| 4 | 152WP0200X | Eye and Vision Services Providers | Optometrist | 4901002909 (MI) |
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.
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 |
|---|---|---|---|
| WH002909 | OTHER (01) | MI | BCBS OF MICHIGAN |
| 22-70003 | OTHER (01) | MI | PHP FAMILY CARE |
| 22-00003 | OTHER (01) | MI | PHP FOF MIDMICHIGAN |
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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 1639167505, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
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 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1639167505, enumerated as an "individual" on October 13, 2005.
The provider is located at 1536 HASLETT RD HASLETT, MI 48840 and the phone number is (517) 339-4100.
Optometrist with taxonomy code 152WX0102X and a focus in Occupational Vision.
The provider might be accepting Accepts: Blue Cross Blue Shield, Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.
