DR. HOWARD IVAN SIEGEL MD.
NPI 1104836337
Internal Medicine in New York, NY
About Dr. Howard Ivan Siegel Md. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HOWARD IVAN SIEGEL MD. (NPI 1104836337) is an individual internal medicine provider in New York, New York, licensed in New York (087909) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Chicago College Of Medicine And Surgery (1961).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Howard Ivan Siegel Md. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Howard Siegel reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10016
- Reassigned Medicare billing, New York enrollment
- 12 clinicians in this Medicare group
Brooklyn, NY 11215
- Reassigned Medicare billing, New York enrollment
- 23 clinicians in this Medicare group
Brooklyn, NY 11209
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: American Medical Today PC
- 28 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 28
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10016
NEW YORK, NY 10016
NEW YORK, NY 10016
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 Howard Siegel's NPI number?
The NPI number for Howard Siegel is 1104836337. It was assigned to this individual provider in the NPPES registry on August 9, 2006. The provider is also known as Howard Siegel MD.
Where is Howard Siegel located?
Howard Siegel practices at 145 E 32nd St Suite 303, New York, NY 10016. The listed phone number is (212) 725-5300.
What is Howard Siegel's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Howard Siegel enrolled in Medicare?
Yes. Howard Siegel is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Howard Siegel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Howard Siegel reassigns Medicare benefits to 3 organizations: Manhattan Internal Medicine Associates, PC (New York, NY), Ny Total Medical Care, P.C. (Brooklyn, NY) and American Medical Today P.C. (Brooklyn, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Howard Siegel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Howard Siegel was last updated on May 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.