Harold Mast, MD
NPI 1396790820 · Vascular & Interventional Radiology Physician · West Orange, NJ
Enrolled with Medicare as Practitioner - Interventional Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harold Mast, MD is a Vascular & Interventional Radiology Physician provider in West Orange, NJ (NPI 1396790820).
Provider details
- NPI number
- 1396790820
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA05935000 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
599 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle And/Or Tube Into Hemodialysis Circuit and Balloon Dilation of Dialysis Segment With Review By Radiologist36902 | 244 | $262 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 126 | $40 |
| Ultrasound Evaluation of Blood Vessel With Review By Radiologist, Initial Vessel37252 | 87 | $1,128 |
| Insertion of Needle And/Or Tube Into Hemodialysis Circuit and Balloon Dilation of Dialysis Segment With Review By Radiologist36902 | 69 | $1,427 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 52 | $66 |
| Balloon Dilation of Dialysis Segment With Review By Radiologist |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$76 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2017-04-24
Frequently asked questions
- What is Harold Mast's NPI number?
- Harold Mast's National Provider Identifier (NPI) is 1396790820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Mast's specialty?
- Harold Mast is listed in the NPPES registry with a primary specialty of Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Harold Mast located?
- Harold Mast's practice location on file with NPPES is 741 Northfield Ave, West Orange, NJ 07052-1174.
- What is Harold Mast's phone number?
- The practice phone number listed in the NPPES registry for Harold Mast is (973) 243-9729.
- Does Harold Mast accept Medicare?
- Harold Mast is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harold Mast's NPI active?
- Yes — Harold Mast's NPI (1396790820) is active in the NPPES registry as of the last update on 2017-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.