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DR. WILLIAM E SCHWEIZER III MD
NPI 1639151038
Obstetrics & Gynecology in Sharon, CT

Active since November 19, 2005PECOS Enrolled
89.86/100
CMS Quality Rating
50 AMENIA RD, SHARON, CT 06069(860) 364-0536(860) 364-1299 Get Directions Write a Review

NPPES record last updated: November 5, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 5, 2021, Oct 31, 2018 (2 updates tracked since 2018).

About Dr. William E Schweizer Iii Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM E SCHWEIZER III MD (NPI 1639151038) is an individual obstetrics & gynecology provider in Sharon, Connecticut, licensed in Connecticut (69670) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639151038
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. WILLIAM E SCHWEIZER IIICredential: MD
Location Address50 AMENIA RDSharon, CT 06069-2268
Mailing AddressPo Box 1040Sharon, CT 06069-1040 · (212) 686-8686 · Fax (212) 686-1920
Phone(860) 364-0536
Fax(860) 364-1299
Sole ProprietorNo
Enumeration DateNovember 19, 2005
Last NPPES UpdateNovember 5, 20212 updates tracked since enumeration
NPPES CertifiedNovember 5, 2021
✔ NPI 1639151038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in CT · 69670✔ Licensed in NY · 159790
Definition
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.
Also ListedObstetrics & Gynecology · GynecologyTaxonomy 207VG0400X · License 159790 (NY)
Also ListedObstetrics & Gynecology · ObstetricsTaxonomy 207VX0000X · License 159790 (NY)
50 AMENIA RD, Sharon, CT 06069
Open in Google Maps ↗

Other Identifiers 3

Other138994NY · United Healthcare
OtherNP1173NY · Oxford Health Plans
Other0M2005NY · Health Net

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William E Schweizer Iii Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show William Schweizer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Physicians For Women's Health LLC
45 mi
Obstetrics & Gynecology
175 CAPITAL BLVD STE 300
Rocky Hill, CT 06067
  • Reassigned Medicare billing, Connecticut enrollment
  • 371 clinicians in this Medicare group
NPI 1801826680 (860) 678-3400
Planned Parenthood Of Greater New York Inc
86 mi
Ambulatory Family Planning Facility
44 COURT ST FL 4
Brooklyn, NY 11201
  • Reassigned Medicare billing, New York enrollment
  • 77 clinicians in this Medicare group
NPI 1417959701 (212) 965-7000
New York University
1,121 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 7,712 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06069 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.86/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality93.17
Promoting Interoperability100
Improvement Activities40
Cost73.04

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JOSHUA SAMUEL JAFFE M.D.
Obstetrics & Gynecology
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 364-0536
MEGAN E CORJULO C.N.M.
Advanced Practice Midwife
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 364-0536
HOWARD MORTMAN MD
Obstetrics & Gynecology
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 364-0536
SUSAN M. PARISI, MD, LLC
Obstetrics & Gynecology (Obstetrics)
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 364-0536
TRI STATE WOMENS SERVICES LLC
Obstetrics & Gynecology
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 364-0536
PTSMA, INC.
Clinic/Center (Physical Therapy)
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 364-9309
ORTHOCONNECTICUT, PLLC
Durable Medical Equipment & Medical Supplies
50 AMENIA RD
SHARON, CT 06069
Northwest Hills Planning Region (860) 355-8000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Schweizer's NPI number?

The NPI number for William Schweizer is 1639151038. It was assigned to this individual provider in the NPPES registry on November 19, 2005.

Where is William Schweizer located?

William Schweizer practices at 50 Amenia Rd, Sharon, CT 06069. The listed phone number is (860) 364-0536.

What is William Schweizer's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is William Schweizer enrolled in Medicare?

Yes. William Schweizer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for William Schweizer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Schweizer reassigns Medicare benefits to 3 organizations: Physicians For Women's Health LLC (Rocky Hill, CT), Planned Parenthood Of Greater New York Inc (Brooklyn, NY) and New York University (Boynton Beach, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Schweizer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Schweizer was last updated on November 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.