Quick answers
- Does Howard I. Siegel accept Medicare assignment?
- Yes. Medicare's clinician data says Howard I. Siegel accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Howard I. Siegel see?
- In 2024, CMS data shows 169 Original Medicare patients and 1,701 services for Howard I. Siegel. This counts Original Medicare only and measures volume, not quality.
- What is Howard I. Siegel's NPI number?
- 1104836337. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Howard I. Siegel, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 169 |
|---|---|
| Services billed to Medicare | 1,701 |
| Different services or procedures | 66 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)154 services
- Blood test, comprehensive group of blood chemicals (80053)114 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)104 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)97 services
- Blood test, thyroid stimulating hormone (tsh) (84443)94 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure68%
- Arthritis41%
- Diabetes31%
- Ischemic heart disease25%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)20%
Practice locations
Addresses where Howard I. Siegel is enrolled with Medicare (CMS data updated October 2, 2026).
- 145 E 32nd St, Suite 303New York, NY 10016 (212) 725‑5300
Group practices
Medicare enrollment lists Howard I. Siegel as a member of this group (CMS data updated October 2, 2026).
- Manhattan Internal Medicine Associates PC7 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Manhattan Internal Medicine Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Chicago College Of Medicine And Surgery |
| Graduation year | 1961 (65 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1104836337 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians