GREAT LAKES BAY HEALTH CENTERS
NPI 1558620237
Obstetrics & Gynecology in Saginaw, MI
NPI Status: Active since May 15, 2012
Contact Information
800 S WASHINGTON AVE
SAGINAW, MI
ZIP 48601
Phone: (989) 759-6435
Fax: (989) 759-6429
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Organization
- Obstetrics & Gynecology
About GREAT LAKES BAY HEALTH CENTERS
This page provides the complete NPI Profile along with additional information for Great Lakes Bay Health Centers, a women's health care provider established in Saginaw, Michigan operating as a Obstetrics & Gynecology. The healthcare provider is registered in the NPI registry with number 1558620237 assigned on May 2012. The practitioner's primary taxonomy code is 207V00000X. The provider is registered as an organization and their NPI record was last updated June 2026. Great Lakes Bay Health Centers operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Lisa M Galonska (Vice President)
- NPI
- 1558620237
- Provider Name
- GREAT LAKES BAY HEALTH CENTERS
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 800 S WASHINGTON AVE SAGINAW, MI 48601
- Location Phone
- (989) 759-6435
- Location Fax
- (989) 759-6429
- Mailing Address
- 501 LAPEER AVE SAGINAW, MI 48607
- Mailing Phone
- (989) 759-6435
- Mailing Fax
- (989) 759-6429
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-15-2012
- Last Update Date
- 06-19-2026
- Code Navigator
Women's health care providers like Great Lakes Bay Health Centers treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, 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
Obstetrics & Gynecology
- Taxonomy Code
- 207V00000X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
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 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | |
| 2 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | |
| 3 | 208M00000X | Allopathic & Osteopathic Physicians | Hospitalist |
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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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 1558620237, 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.
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 53 is 60. 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.
SAGINAW, MI 48601
SAGINAW, MI 48601
SAGINAW, MI 48601
SAGINAW, MI 48601
SAGINAW, MI 48601
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1558620237, enumerated as an "organization" on May 15, 2012.
The provider is located at 800 S WASHINGTON AVE SAGINAW, MI 48601 and the phone number is (989) 759-6435.
Obstetrics & Gynecology with taxonomy code 207V00000X.
