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

Louis Daniel Neistadt, MD

Individual provider Nuclear Medicine Physician · NPI 1194825455

Louis Daniel Neistadt, MD practises Diagnostic Radiology in New York, New York. Graduated from Stanford University School of Medicine in 1972, 54 years ago. Practices with Lenox Hill Radiology and Medical Imaging Associates PC, a 243-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
54
Trained at
Stanford University School of Medicine
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

400 E 66th St
New York, NY 10021 Not confirmed with CMS for 13 years — call before visiting
Phone: (212) 838-4243
Fax: (212) 838-7370
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 119859 (NY)
Nuclear Medicine Physician Taxonomy 207U00000X · Licence 119859 (NY)

Record details

NPI number1194825455
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 25, 2006
Last updated in NPPESJuly 16, 2013

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 1972 (54 years in practice)
Group practice Lenox Hill Radiology And Medical Imaging Associates Pc — 243 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients67
Services billed 1,460 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Colleagues at Lenox Hill Radiology and Medical Imaging Associates PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 243 clinicians in the practice; 12 are shown here.

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