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DR. STEPHANIE KAYDEN MD, MPH
NPI 1629034954
Emergency Medicine in Boston, MA

Active since April 25, 2006PECOS Enrolled
INTERNATIONAL EMERGENCY MEDICINE, 75 FRANCIS ST, BOSTON, MA 02115(617) 732-5813(617) 713-3060 Get Directions Write a Review

NPPES record last updated: January 26, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Stephanie Kayden Md, Mph NPPES

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

DR. STEPHANIE KAYDEN MD, MPH (NPI 1629034954) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (221814) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629034954
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. STEPHANIE KAYDENCredential: MD, MPH
Location AddressINTERNATIONAL EMERGENCY MEDICINE, 75 FRANCIS STBoston, MA 02115
Mailing AddressInternational Emergency Medicine, 75 Francis StBoston, MA 02115 · (617) 732-5813 · Fax (617) 713-3060
Phone(617) 732-5813
Fax(617) 713-3060
Sole ProprietorNo
Enumeration DateApril 25, 2006
Last NPPES UpdateJanuary 26, 2012
✔ NPI 1629034954 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MA · 221814
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
INTERNATIONAL EMERGENCY MEDICINE, Boston, MA 02115
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Stephanie Kayden Md, Mph 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 Stephanie Kayden reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Brigham & Womens Physicians Organization Inc
1.7 mi
Internal Medicine
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4,574 clinicians in this Medicare group
NPI 1033535497 (617) 732-5500

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
67 services67 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
38 services37 patients
Ultrasound of heart, follow-up 93308
A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.
20 services19 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

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 Stephanie Kayden's NPI number?

The NPI number for Stephanie Kayden is 1629034954. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Where is Stephanie Kayden located?

Stephanie Kayden practices at International Emergency Medicine 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-5813.

What is Stephanie Kayden's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Stephanie Kayden enrolled in Medicare?

Yes. Stephanie Kayden is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephanie Kayden's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Kayden reassigns Medicare benefits to Brigham & Womens Physicians Organization Inc (Boston, MA). 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 Stephanie Kayden'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 Stephanie Kayden was last updated on January 26, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.