Quick answers
- Does Harold N. Gruber accept Medicare assignment?
- Yes. Medicare's clinician data says Harold N. Gruber 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 Harold N. Gruber see?
- In 2024, CMS data shows 498 Original Medicare patients and 2,769 services for Harold N. Gruber. This counts Original Medicare only and measures volume, not quality.
- What is Harold N. Gruber's NPI number?
- 1386734143. 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 Harold N. Gruber, 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 | 498 |
|---|---|
| Services billed to Medicare | 2,769 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)520 services
- Removal of fingernails or toenails, 1-5 nails (11720)512 services
- Trimming of fingernails or toenails (11719)510 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)258 services
- Removal of fingernails or toenails, 6 or more nails (11721)231 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 blood pressure75%
- High cholesterol75%
- Arthritis56%
- Diabetes36%
- Chronic kidney disease31%
- Ischemic heart disease25%
Hospitals where Harold N. Gruber works
Medicare's Facility Affiliation Data lists Harold N. Gruber at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001
- St Francis HospitalWilmington, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080003
Practice locations
Addresses where Harold N. Gruber is enrolled with Medicare (CMS data updated October 2, 2026).
- 2018 Naamans Rd, Bldg 1Wilmington, DE 19810 (302) 475‑1299
Group practices
Medicare enrollment lists Harold N. Gruber as a member of this group (CMS data updated October 2, 2026).
- Tri-State Foot and Ankle Center, LLC2 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in Wilmington
Clinicians with the same Medicare primary specialty in Wilmington, DE — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Podiatric medical school | Temple University School Of Podiatric Medicine |
| Graduation year | 1993 (33 years since podiatric medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386734143 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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