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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. DENNIS TOBIAS TANSIONGCO MD
NPI 1174588040
Internal Medicine - Adolescent Medicine in Plainview, NY

Active since April 20, 2006PECOS Enrolled
1425 OLD COUNTRY RD, PLAINVIEW, NY 11803(516) 694-6008(516) 694-6223 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Dennis Tobias Tansiongco Md NPPES

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

DR. DENNIS TOBIAS TANSIONGCO MD (NPI 1174588040) is an individual adolescent medicine provider in Plainview, New York, licensed in New York (193133) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1174588040
Entity TypeIndividualMale
Primary Taxonomy207RA0000X
Provider Legal NameDR. DENNIS TOBIAS TANSIONGCOCredential: MD
Location Address1425 OLD COUNTRY RDPlainview, NY 11803-5010
Mailing Address2 The LochRoslyn Estates, NY 11576-1917 · (516) 621-3127 · Fax (516) 621-3127
Phone(516) 694-6008
Fax(516) 694-6223
Sole ProprietorNo
Enumeration DateApril 20, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1174588040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Adolescent MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RA0000X
License✔ Licensed in NY · 193133
Definition
An internist who specializes in adolescent medicine is a multi-disciplinary healthcare specialist trained in the unique physical, psychological and social characteristics of adolescents, their healthcare problems and needs.
1425 OLD COUNTRY RD, Plainview, NY 11803
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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)

Dr. Dennis Tobias Tansiongco Md 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.

Other Providers at the Same Location NPPES 2

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

CYNTHIA LEE DAILY LCSW
Counselor (Mental Health)
1425 OLD COUNTRY RD, BLDG H
PLAINVIEW, NY 11803
Nassau County (516) 573-5053
MRS. KAREN ANN KOGEL FNP
Nurse Practitioner (Family)
1425 OLD COUNTRY RD, BUILDING H
PLAINVIEW, NY 11803
Nassau County (631) 261-4400

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 Dennis Tansiongco's NPI number?

The NPI number for Dennis Tansiongco is 1174588040. It was assigned to this individual provider in the NPPES registry on April 20, 2006.

Where is Dennis Tansiongco located?

Dennis Tansiongco practices at 1425 Old Country Rd, Plainview, NY 11803. The listed phone number is (516) 694-6008.

What is Dennis Tansiongco's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Adolescent Medicine, with taxonomy code 207RA0000X.

Is Dennis Tansiongco enrolled in Medicare?

Yes. Dennis Tansiongco is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Dennis Tansiongco 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 37 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.