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ALEXANDER CHAN, M.D., P.C.
NPI 1245401223
Internal Medicine in New York, NY

Active since March 18, 2008CLIA 33D2183194 · Waiver
13-17 ELIZABETH STREET, RM 409, NEW YORK, NY 10013(212) 334-3999 Get Directions Write a Review

NPPES record last updated: January 12, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 12, 2026, Oct 19, 2023 (2 updates tracked since 2023).

About Alexander Chan, M.d., P.c. NPPES

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

ALEXANDER CHAN, M.D., P.C. (NPI 1245401223) is a healthcare organization registered as an internal medicine in New York, New York and active in the NPI registry since March 2008. The organization holds a CLIA Waiver certificate valid through April 30, 2028 and lists Alexander Chan, President, as its authorized official.

NPPES Registry Identity

NPI1245401223
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameALEXANDER CHAN, M.D., P.C.
Location Address13-17 ELIZABETH STREET, RM 409New York, NY 10013
Mailing Address13-17 Elizabeth Street, Suite 510New York, NY 10013
Phone(212) 334-3999
Organization SubpartNo
Authorized OfficialAlexander ChanPresident · (212) 334-3999
Enumeration DateMarch 18, 2008
Last NPPES UpdateJanuary 12, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 12, 2026
✔ NPI 1245401223 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 239025
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.
13-17 ELIZABETH STREET, New York, NY 10013
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 33D2183194

Alexanderr Chan MD PC · New York, NY
Active · expires Apr 30, 2028
CLIA Number33D2183194
Laboratory TypePhysician Office
Certificate Effective DateMay 1, 2026
Certificate Expiration DateApril 30, 2028
Laboratory DirectorDr. Alexander C. Chan
Laboratory Phone(212) 334-3999
Laboratory LocationAlexanderr Chan MD PC13-17 Elizabeth St Suite 510, New York, NY 10013
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 6

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

DR. HELEN S LAU M.D.
Pediatrics
13-17 ELIZABETH STREET, #507
NEW YORK, NY 10013
New York County (212) 219-3174
ENN KONG LIEW DMD
Dentist
13-17 ELIZABETH STREET, STE 305
NY, NY 10013
New York County (212) 925-8171
DR. ALEXANDER C CHAN M.D.
Internal Medicine
13-17 ELIZABETH STREET, RM 409
NEW YORK, NY 10013
New York County (212) 334-3999
MARK CHU DO
Internal Medicine (Gastroenterology)
13-17 ELIZABETH STREET, STE 608
NEW YORK, NY 10013
New York County (212) 219-8031
DAVID SHU MD PC
Ophthalmology
13-17 ELIZABETH STREET, SUITE 607
NEW YORK, NY 10013
New York County (212) 925-3825
LIANG'S DENTAL PLLD
Dentist (General Practice)
13-17 ELIZABETH STREET, SUITE 408
NEW YORK, NY 10013
New York County (212) 966-2999

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 Chan, M.D., P.C.'s NPI number?

The NPI number for Alexander Chan, M.D., P.C. is 1245401223. It was assigned to this organization in the NPPES registry on March 18, 2008.

Where is Alexander Chan, M.D., P.C. located?

Alexander Chan, M.D., P.C. is located at 13-17 Elizabeth Street Rm 409, New York, NY 10013. The listed phone number is (212) 334-3999.

What is Alexander Chan, M.D., P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does Alexander Chan, M.D., P.C. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D2183194) is associated with this NPI, valid through April 30, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Alexander Chan, M.D., P.C. was last updated on January 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.