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DR. TIMOTHY DONALD MIKULSKI MD
NPI 1891488201
Internal Medicine in Boston, MA

Active since May 31, 2023
800 WASHINGTON ST, BOSTON, MA 02111(617) 636-5000 Get Directions Write a Review

NPPES record last updated: May 16, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 16, 2025, May 31, 2023 (2 updates tracked since 2023).

About Dr. Timothy Donald Mikulski Md NPPES

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

DR. TIMOTHY DONALD MIKULSKI MD (NPI 1891488201) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (3019085) and active in the NPI registry since May 2023.

NPPES Registry Identity

NPI1891488201
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. TIMOTHY DONALD MIKULSKICredential: MD
Location Address800 WASHINGTON STBoston, MA 02111-1552
Mailing Address1 Nassau St Apt 809Boston, MA 02111-1554
Phone(617) 636-5000
Sole ProprietorNo
Enumeration DateMay 31, 2023
Last NPPES UpdateMay 16, 20252 updates tracked since enumeration
NPPES CertifiedMay 16, 2025
✔ NPI 1891488201 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 3019085
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
800 WASHINGTON ST, Boston, MA 02111
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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.

AARON DICKSTEIN M.D.
Internal Medicine (Gastroenterology)
800 WASHINGTON ST, BOX 233
BOSTON, MA 02111
Suffolk County (617) 636-5883
THOMAS E BIGELOW
Technician/Technologist (Optician)
800 WASHINGTON ST, BOX 450
BOSTON, MA 02111
Suffolk County (617) 636-5857
SARAH MERRIMAN PERSING M.D.
Plastic Surgery
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
DR. SHARANYA MOHANTY M.D.
Internal Medicine
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
AFRAH SADIQ SAIT MOHAMMED M.D.
Internal Medicine (Infectious Disease)
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (718) 629-7204
ADNAN SALIM QAMAR MD
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5829
ALICIA SIGIA WU MD
Psychiatry & Neurology (Psychiatry)
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-1619
ZEANAARONEVAN ANDRES LUNA
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-8100

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 Timothy Mikulski's NPI number?

The NPI number for Timothy Mikulski is 1891488201. It was assigned to this individual provider in the NPPES registry on May 31, 2023.

Where is Timothy Mikulski located?

Timothy Mikulski practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.

What is Timothy Mikulski'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 Timothy Mikulski was last updated on May 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.