Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Robert Alexander, DO

Individual provider Internal Medicine Physician · NPI 1912956301

Robert Alexander, DO practises Internal Medicine in Massapequa, New York. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 1996, 30 years ago. Practices with Northwell Healthcare Inc, a 17-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
30
Trained at
New York College of Osteo Medicine of New York Institute of Technology
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 Not confirmed with CMS for 11 years — call before visiting
Phone: (516) 541-2233
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 207736 (NY)

Record details

NPI number1912956301
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 10, 2006
Last updated in NPPESJune 9, 2015

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 1996 (30 years in practice)
Group practice Northwell Healthcare Inc — 17 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients523
Services billed 3,516 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Catholic Home Care Home health agency · Farmingdale, NY
  • North Shore Home Care Chha Home health agency · Westbury, NY

Colleagues at Northwell Healthcare Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 17 clinicians in the practice; 12 are shown here.

Other providers in Massapequa