1. Home
  2. Directory
  3. New York
  4. New York New York
  5. Obstetrics Gynecology
  6. NPI Profile

DR. KATHY CHYJEK MATTHEWS M.D.
NPI 1346681228
Obstetrics & Gynecology - Maternal & Fetal Medicine in New York, NY

Active since July 08, 2013PECOS Enrolled
525 E 68TH ST, NEW YORK, NY 10065(212) 746-3225(212) 746-8008 Get Directions Write a Review

NPPES record last updated: August 3, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 3, 2026, Mar 21, 2019 (2 updates tracked since 2019).

About Dr. Kathy Chyjek Matthews M.d. NPPES

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

DR. KATHY CHYJEK MATTHEWS M.D. (NPI 1346681228) is an individual maternal & fetal medicine provider in New York, New York, licensed in New Jersey (25MA10872500) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1346681228
Entity TypeIndividualFemale
Primary Taxonomy207VM0101X
Provider Legal NameDR. KATHY CHYJEK MATTHEWSCredential: M.D.
Location Address525 E 68TH STNew York, NY 10065-4870
Mailing Address525 E 68th StNew York, NY 10065-4870 · (212) 746-3225 · Fax (212) 746-8008
Phone(212) 746-3225
Fax(212) 746-8008
Sole ProprietorYes
Enumeration DateJuly 8, 2013
Last NPPES UpdateAugust 3, 20262 updates tracked since enumeration
NPPES CertifiedAugust 3, 2026
✔ NPI 1346681228 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in NJ · 25MA10872500
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License 289229 (NY)
525 E 68TH ST, New York, NY 10065
Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Kathy Chyjek M.d.

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Kathy Chyjek Matthews 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 Kathy Matthews reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

New Jersey Perinatal Assoc. LLC
18 mi
Specialist
94 OLD SHORT HILLS RD, EAST WING, SUITE 402
Livingston, NJ 07039
  • Reassigned Medicare billing, New Jersey enrollment
  • 10 clinicians in this Medicare group
NPI 1487696779 (973) 322-5287

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 10065 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$81.44 typical visit price
range $21.20 – $160.66
Typical copayment $20.36 (range $5.30 – $40.16)
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.

Other Providers at the Same Location NPPES 20

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

DR. AKILI HINSON M.D.
Surgery
525 E 68TH ST
NEW YORK, NY 10065
New York County (212) 746-5454
ABBY AVGERINOS
Nurse Practitioner (Adult Health)
525 E 68TH ST
NEW YORK, NY 10065
New York County (610) 742-3894
DR. PAMELA JOAN-YIN TIEU M.D.
Hospitalist
525 E 68TH ST
NEW YORK, NY 10065
New York County (212) 746-5454
JENNIFER ANNE SOO HOO MD
Physical Medicine & Rehabilitation (Sports Medicine)
525 E 68TH ST
NEW YORK, NY 10065
New York County (212) 746-1500
WEILL MEDICAL COLLEGE OF CORNELL
Specialist
525 E 68TH ST
NEW YORK, NY 10065
New York County (212) 746-2846
MS. RACHAEL HALEY BLAIRE PA-C
Physician Assistant
525 E 68TH ST
NEW YORK, NY 10065
New York County (480) 221-9894
DR. NISHA MEHTA-NAIK M.D.
Psychiatry & Neurology (Psychiatry)
525 E 68TH ST, MAIL SLOT 140
NEW YORK, NY 10065
New York County (212) 746-3720
POOJA SHAH SALVI
Student in an Organized Health Care Education/Training Program
525 E 68TH ST
NEW YORK, NY 10065
New York County (646) 962-8413

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 Kathy Matthews's NPI number?

The NPI number for Kathy Matthews is 1346681228. It was assigned to this individual provider in the NPPES registry on July 8, 2013. The provider is also known as Dr. Kathy Chyjek M.D..

Where is Kathy Matthews located?

Kathy Matthews practices at 525 E 68th St, New York, NY 10065. The listed phone number is (212) 746-3225.

What is Kathy Matthews's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Kathy Matthews enrolled in Medicare?

Yes. Kathy Matthews is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kathy Matthews's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathy Matthews reassigns Medicare benefits to New Jersey Perinatal Assoc. LLC (Livingston, NJ). 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 Kathy Matthews's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kathy Matthews accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Kathy Matthews 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 Kathy Matthews was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.