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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.

ALEXANDER D MACALALAD M.D.
NPI 1245298207
Internal Medicine - Infectious Disease in Boston, MA

Active since May 01, 2006
677 HUNTINGTON AVE, HSPH-DEPT. OF BIOSTATISTICS, BOSTON, MA 02115(617) 432-1056 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Alexander D Macalalad M.d. NPPES

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

ALEXANDER D MACALALAD M.D. (NPI 1245298207) is an individual infectious disease provider in Boston, Massachusetts, licensed in Massachusetts (212517) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1245298207
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameALEXANDER D MACALALADCredential: M.D.
Location Address677 HUNTINGTON AVE, HSPH-DEPT. OF BIOSTATISTICSBoston, MA 02115-6028
Mailing Address677 Huntington Ave, Hsph-dept. Of BiostatisticsBoston, MA 02115-6028 · (617) 432-1056
Phone(617) 432-1056
Sole ProprietorNo
Enumeration DateMay 1, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1245298207 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in MA · 212517
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
677 HUNTINGTON AVE, Boston, MA 02115
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Other Providers at the Same Location NPPES 3

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

HARVARD UNIVERSITY
Clinic/Center (Occupational Medicine)
677 HUNTINGTON AVE
BOSTON, MA 02115
Suffolk County (603) 361-2141
DIANE CHEN MD
Anesthesiology
677 HUNTINGTON AVE
BOSTON, MA 02115
Suffolk County (617) 821-1192
DR. MARIE C MCCORMICK MD, DSC
Pediatrics
677 HUNTINGTON AVE
BOSTON, MA 02115
Suffolk County (617) 432-3759

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 Alexander Macalalad's NPI number?

The NPI number for Alexander Macalalad is 1245298207. It was assigned to this individual provider in the NPPES registry on May 1, 2006.

Where is Alexander Macalalad located?

Alexander Macalalad practices at 677 Huntington Ave Hsph-Dept. Of Biostatistics, Boston, MA 02115. The listed phone number is (617) 432-1056.

What is Alexander Macalalad's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

When was this NPI record last updated?

The NPPES record for Alexander Macalalad 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 55 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.