STEPHANIE KERWIN MIDWIFERY, INC.
NPI 1922972314
Midwife in Aptos, CA

NPI Status: Active since September 30, 2025

Contact Information

245 SEA RIDGE RD
APTOS, CA
ZIP 95003
Phone: (831) 818-7875
Fax: (831) 400-3348

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  • Organization
  • Midwife

About STEPHANIE KERWIN MIDWIFERY, INC.

This page provides the complete NPI Profile along with additional information for Stephanie Kerwin Midwifery, Inc., a provider established in Aptos, California operating as a Midwife. The healthcare provider is registered in the NPI registry with number 1922972314 assigned on September 2025. The practitioner's primary taxonomy code is 176B00000X. The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Stephanie Kerwin Lm, Cpm (President)

NPI
1922972314
Provider Name
STEPHANIE KERWIN MIDWIFERY, INC.
Entity Type
Organization
Location Address
245 SEA RIDGE RD APTOS, CA 95003
Location Phone
(831) 818-7875
Location Fax
(831) 400-3348
Mailing Address
633 PACHECO AVE SANTA CRUZ, CA 95065
Mailing Phone
(831) 818-7875
Mailing Fax
(831) 400-3348
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
09-30-2025
Last Update Date
09-30-2025
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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

Midwife

Taxonomy Code
176B00000X
Type
Other Service Providers
Taxonomy Description
A Midwife is a trained professional with special expertise in supporting women to maintain a healthy pregnancy birth, offering expert individualized care, education, counseling, and support to a woman and her newborn throughout the childbearing cycle. A Midwife is a skilled and independent practitioner who has undergone formalized training. Midwives are not required to be nurses and may be trained via multiple routes of education (apprenticeship, workshop, formal classes, or programs, etc., usually a combination). The educational background requirements and licensing requirements vary by state. The Midwife may or may not be certified by a state or national organization.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

STEPHANIE KERWIN LM, CPM

Authorized Official Title
PRESIDENT
Authorized Official Phone
(831) 818-7875

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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 1922972314, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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
9
Unchanged
Pos 3
2
Doubled → 4
Pos 4
2
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
7
Unchanged
Pos 7
2
Doubled → 4
Pos 8
3
Unchanged
Pos 9
1
Doubled → 2
Check
4
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 2 → 4 9 → 18 → 9 2 → 4 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 1 + 8 + 7 + 4 + 3 + 2 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1922972314.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Clinic/Center (Primary Care)
245 SEA RIDGE RD
APTOS, CA 95003
Clinic/Center
245 SEA RIDGE RD
APTOS, CA 95003
Midwife
245 SEA RIDGE RD
APTOS, CA 95003

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922972314, enumerated as an "organization" on September 30, 2025.

The provider is located at 245 SEA RIDGE RD APTOS, CA 95003 and the phone number is (831) 818-7875.

Midwife with taxonomy code 176B00000X.