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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. KATHRYN HAYWARD MD
NPI 1104817097
Internal Medicine in Boston, MA

Active since October 31, 2005
50 STANIFORD ST, 3RD FLOO S503, BOSTON, MA 02114(617) 724-8059(617) 724-8067 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Kathryn Hayward Md NPPES

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

DR. KATHRYN HAYWARD MD (NPI 1104817097) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (70744) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1104817097
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. KATHRYN HAYWARDCredential: MD
Location Address50 STANIFORD ST, 3RD FLOO S503Boston, MA 02114-2517
Mailing AddressPo Box 9142Charlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Phone(617) 724-8059
Fax(617) 724-8067
Sole ProprietorNo
Enumeration DateOctober 31, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1104817097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 70744
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
50 STANIFORD ST, Boston, MA 02114
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Other Identifiers 3

Medicaid3102874MA
OtherJ12493MA · Bcbs Ma
Other070744MA · Tufts Health Plan

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.

MARIA JOSE LOPEZ VELASQUEZ MD
Ophthalmology
50 STANIFORD ST
BOSTON, MA 02114
Suffolk County (617) 367-4800
SEAN M BURNS M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
50 STANIFORD ST, SUITE 340
BOSTON, MA 02114
Suffolk County (617) 726-8722
DR. ALBERT S YEUNG MD
Psychiatry & Neurology (Psychiatry)
50 STANIFORD ST, SUITE 401 S50 401
BOSTON, MA 02114
Suffolk County (617) 726-5138
DR. MARA LORENZI MD
Pathology (Clinical Pathology/Laboratory Medicine)
50 STANIFORD ST, 3RD FLOOR S50 3 DIABETES UNIT
BOSTON, MA 02114
Suffolk County (617) 726-8722
MARK D KIRSTEIN OD
Optometrist
50 STANIFORD ST, SUITE 600
BOSTON, MA 02114
Suffolk County (617) 367-4800
JASON S ROTHMAN MD
Ophthalmology
50 STANIFORD ST, SUITE 600
BOSTON, MA 02114
Suffolk County (617) 367-4800
AP DENTAL STANIFORD PLLC
Clinic/Center (Dental)
50 STANIFORD ST
BOSTON, MA 02114
Suffolk County (978) 223-3742
DR. JOSEPH C KVEDAR MD
Dermatology
50 STANIFORD ST, SUITE 200
BOSTON, MA 02114
Suffolk County (617) 726-2914

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 Kathryn Hayward's NPI number?

The NPI number for Kathryn Hayward is 1104817097. It was assigned to this individual provider in the NPPES registry on October 31, 2005.

Where is Kathryn Hayward located?

Kathryn Hayward practices at 50 Staniford St 3rd Floo S503, Boston, MA 02114. The listed phone number is (617) 724-8059.

What is Kathryn Hayward's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Kathryn Hayward was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.