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

Dr. Howard L Knoll, DO

Individual provider Internal Medicine Physician · NPI 1700994589

Dr. Howard L Knoll, DO is an Internal Medicine Physician in Massapequa, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

896 N Broadway
Massapequa, NY 11758-2328
Phone: (516) 798-5552
Fax: (516) 541-2456
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 175948 (NY)

Record details

NPI number1700994589
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedAugust 29, 2006
Last updated in NPPESJuly 8, 2007
Mailing address896 N Broadway, Massapequa, NY 11758-2328

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