WATERFIELD OB-GYN
NPI 1750719415
Obstetrics & Gynecology in Winchester, MA

Active since October 16, 2013
955 MAIN ST, SUITE # 208, WINCHESTER, MA 01890(781) 721-0900(781) 721-1515 Get Directions Write a Review

NPPES record last updated: October 16, 2013. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Organization
  • Obstetrics & Gynecology

About WATERFIELD OB-GYN

This page provides the complete NPI Profile along with additional information for Waterfield Ob-gyn, a women's health care provider established in Winchester, Massachusetts operating as a Obstetrics & Gynecology. The healthcare provider is registered in the NPI registry with number 1750719415 assigned on October 2013. The practitioner's primary taxonomy code is 207V00000X. The provider is registered as an organization and their NPI record was last updated 13 years 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 provider's is doing business as Waterfield Ob-gyn. The authorized official of this NPI record is Ms. Eileen Wills (Billing Manager)

NPI
1750719415
Provider Legal Name
WINCHESTER PHYSICIAN ASSOCIATES
Other Organization Name
WATERFIELD OB-GYN
Other Name Type
Doing Business As (3)
Entity Type
Organization
Location Address
955 MAIN ST SUITE # 208 WINCHESTER, MA 01890
Location Phone
(781) 721-0900
Location Fax
(781) 721-1515
Mailing Address
PO BOX 760 WINCHESTER, MA 01890
Mailing Phone
(781) 756-7273
Mailing Fax
(781) 721-0725
Is Sole Proprietor?
No
Is Organization Subpart?
Yes
Enumeration Date
10-16-2013
Last Update Date
10-16-2013
Code Navigator

Women's health care providers like Waterfield Ob-gyn 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.

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

MS. EILEEN WILLS

Authorized Official Title
BILLING MANAGER
Authorized Official Phone
(781) 756-7273

Reviews for WATERFIELD OB-GYN

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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 1750719415, 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 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.

Pos 1
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
0
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
1
Doubled → 2
Check
5
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 5 → 10 → 1 7 → 14 → 5 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 0 + 0 + 1 + 4 + 1 + 1 + 8 + 4 + 2 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1750719415.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Ophthalmology
955 MAIN ST, STE 108
WINCHESTER, MA 01890
Ophthalmology
955 MAIN ST, STE 108
WINCHESTER, MA 01890
Pediatrics
955 MAIN ST, SUITE 106 PEDIATRICIANS INC
WINCHESTER, MA 01890
Pediatrics
955 MAIN ST, PEDIATRICIANS INC
WINCHESTER, MA 01890
Dentist (General Practice)
955 MAIN ST, SUITE 201
WINCHESTER, MA 01890
Dentist
955 MAIN ST, SUITE 201
WINCHESTER, MA 01890
Surgery (Surgical Oncology)
955 MAIN ST, SUITE G2A
WINCHESTER, MA 01890
Specialist
955 MAIN ST, SUITE 211
WINCHESTER, MA 01890
Internal Medicine
955 MAIN ST, SUITE 304
WINCHESTER, MA 01890
Psychologist (Clinical)
955 MAIN ST, SUITE 105
WINCHESTER, MA 01890
Dentist (Pediatric Dentistry)
955 MAIN ST
WINCHESTER, MA 01890
Dentist (Pediatric Dentistry)
955 MAIN ST
WINCHESTER, MA 01890
Dentist (Pediatric Dentistry)
955 MAIN ST
WINCHESTER, MA 01890
Dentist (Pediatric Dentistry)
955 MAIN ST
WINCHESTER, MA 01890
Psychologist
955 MAIN ST, SUITE 105
WINCHESTER, MA 01890
Nurse Practitioner
955 MAIN ST, SUITE # G6
WINCHESTER, MA 01890
Psychiatry & Neurology (Neurology)
955 MAIN ST, SUITE 204
WINCHESTER, MA 01890
Dentist (Oral and Maxillofacial Surgery)
955 MAIN ST, SUITE #210
WINCHESTER, MA 01890
Dentist (Oral and Maxillofacial Surgery)
955 MAIN ST, SUITE #210
WINCHESTER, MA 01890
Nurse Practitioner (Gerontology)
955 MAIN ST, SUITE 301A
WINCHESTER, MA 01890

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1750719415, enumerated as an "organization" on October 16, 2013.

The provider is located at 955 MAIN ST SUITE # 208 WINCHESTER, MA 01890 and the phone number is (781) 721-0900.

Obstetrics & Gynecology with taxonomy code 207V00000X.