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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.

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

Active since April 08, 2026PECOS Enrolled
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: October 18, 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. He is enrolled in Medicare PECOS.

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
Phone(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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4201 MEDICAL CENTER DRIVE, Mchenry, IL 60050
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tathagato Das M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60050 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

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.

MISS LAVANYA NAGARAJAN M.B.B.S.
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 759-4726
VISHAL GARIMELLA M.B.B.S.
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 344-5000
YOANA PALATIANOS DE ARAUJO M.D.
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 759-4726
SIAD MOHAMMED ADAM M.D
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 344-5000
AMNA TARIQ
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 344-5000
MRS. DIANE MARIE GLICK APN-CNP
Nurse Practitioner
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (224) 520-3434
IDRIS EJAZ ANWER M.D
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 344-5000
IMAN MUSHFIQ FAROOQUI M.D
Internal Medicine
4201 MEDICAL CENTER DRIVE
MCHENRY, IL 60050
McHenry County (815) 344-5000

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.

Is Tathagato Das enrolled in Medicare?

Yes. Tathagato Das is registered in the Medicare PECOS enrollment system.

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 34 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.