Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Bernard D. Bienstock, MD

Individual provider Internal Medicine Physician · NPI 1043229008

Bernard D. Bienstock, MD is a Gastroenterology in Valley Stream, New York. Qualified in 1987, 39 years ago. Practices with New York University, a 5,884-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
39
Licensed in
NY
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

509 W Merrick Rd
Valley Stream, NY 11580
Phone: (516) 561-8188
Fax: (516) 561-8192
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 182358-1 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 182358-1 (NY)

Record details

NPI number1043229008
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 7, 2006
Last updated in NPPESMay 3, 2023
Certification dateMay 3, 2023
Mailing address509 W. Merrick Road, Valley Stream, NY 11580

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Group practice New York University — 5884 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Valley Stream