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

TATHAGATO DAS M.D.
NPI 1083556971
Internal Medicine in Mchenry, IL

Active since April 08, 2026
4201 MEDICAL CENTER DRIVE, MCHENRY, IL 60050(815) 344-5000 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 21, 2026, Apr 8, 2026 (2 updates tracked since 2026).

About Tathagato Das M.d. NPPES

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

TATHAGATO DAS M.D. (NPI 1083556971) is an individual internal medicine provider in Mchenry, Illinois, licensed in Illinois (125.08814) and active in the NPI registry since April 2026.

NPPES Registry Identity

NPI1083556971
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameTATHAGATO DASCredential: M.D.
Location Address4201 MEDICAL CENTER DRIVEMchenry, IL 60050
Mailing Address4201 Medical Center DriveMchenry, IL 60050 · (815) 344-5000
Sole ProprietorNo
Enumeration DateApril 8, 2026
Last NPPES UpdateSeptember 21, 20262 updates tracked since enumeration
✔ NPI 1083556971 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 IL · 125.08814
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.
4201 MEDICAL CENTER DRIVE, Mchenry, IL 60050

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.

Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Nurse Practitioner
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050

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 Tathagato Das's NPI number?

The NPI number for Tathagato Das is 1083556971. It was assigned to this individual provider in the NPPES registry on April 8, 2026.

Where is Tathagato Das located?

Tathagato Das practices at 4201 Medical Center Drive, Mchenry, IL 60050. The listed phone number is (815) 344-5000.

What is Tathagato Das'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 Tathagato Das was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.