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DAVID B SEIFER M.D.
NPI 1336252659
Obstetrics & Gynecology - Reproductive Endocrinology in Westport, CT

Active since August 17, 2006PECOS Enrolled
73.56/100
CMS Quality Rating
125A KINGS HIGHWAY N, YALE UNIVERSITY - OB/GYN REPRODUCTIVE ENDOCRINOLOGY, WESTPORT, CT 06880(203) 341-8899 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Aug 7, 2017, Aug 22, 2016 (3 updates tracked since 2016).

About David B Seifer M.d. NPPES

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

DAVID B SEIFER M.D. (NPI 1336252659) is an individual reproductive endocrinology provider in Westport, Connecticut, licensed in Connecticut (29737) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336252659
Entity TypeIndividualMale
Primary Taxonomy207VE0102X
Provider Legal NameDAVID B SEIFERCredential: M.D.
Location Address125A KINGS HIGHWAY N, YALE UNIVERSITY - OB/GYN REPRODUCTIVE ENDOCRINOLOGYWestport, CT 06880
Mailing Address125a Kings Highway North, Yale University - Ob/gyn Reproductive EndocrinologyWestport, CT 06880 · (203) 341-8899
Phone(203) 341-8899
Sole ProprietorNo
Enumeration DateAugust 17, 2006
Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration
✔ NPI 1336252659 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Reproductive EndocrinologyAllopathic & Osteopathic Physicians
Taxonomy Code207VE0102X
Licenses✔ Licensed in CT · 29737✔ Licensed in NY · 169526✔ Licensed in OR · MD169445✔ Licensed in NH · 17734
Definition
An obstetrician/gynecologist who is capable of managing complex problems relating to reproductive endocrinology and infertility.
125A KINGS HIGHWAY N, Westport, CT 06880
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

David B Seifer M.d. 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 Reassignment

Medicare enrollment records show David Seifer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Yale University
25 mi
Advanced Practice Midwife
100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1124148887 (203) 737-5432

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 06880 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
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
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.

73.56/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75.84
Promoting Interoperability74
Improvement Activities40
Cost51.43

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 David Seifer's NPI number?

The NPI number for David Seifer is 1336252659. It was assigned to this individual provider in the NPPES registry on August 17, 2006.

Where is David Seifer located?

David Seifer practices at 125A Kings Highway N Yale University - Ob/Gyn Reproductive Endocrinology, Westport, CT 06880. The listed phone number is (203) 341-8899.

What is David Seifer's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Reproductive Endocrinology, with taxonomy code 207VE0102X.

Is David Seifer enrolled in Medicare?

Yes. David Seifer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for David Seifer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Seifer reassigns Medicare benefits to Yale University (New Haven, CT). The 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 David Seifer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does David Seifer accept?

Health plans from Anthem Blue Cross and Blue Shield list David Seifer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for David Seifer was last updated on July 21, 2022. 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.