Samuel Ahn, MD
NPI 1942286661 · Vascular & Interventional Radiology Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samuel Ahn, MD is a Vascular & Interventional Radiology Physician provider in Fontana, CA (NPI 1942286661).
Provider details
- NPI number
- 1942286661
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD21108 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
332 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) |
|---|---|---|
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 71 | $13 |
| X-Ray of Chest, 1 View71045 | 22 | $9 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 22 | $14 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 22 | $22 |
| Drainage of Fluid From Abdominal Cavity Using Imaging Guidance49083 | 21 | $102 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 21 | $28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$110 across 5 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
- 2005-12-15
- Last updated
- 2026-05-08
- Certified
- 2026-05-08
Frequently asked questions
- What is Samuel Ahn's NPI number?
- Samuel Ahn's National Provider Identifier (NPI) is 1942286661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samuel Ahn's specialty?
- Samuel Ahn is listed in the NPPES registry with a primary specialty of Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Samuel Ahn located?
- Samuel Ahn's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Samuel Ahn's phone number?
- The practice phone number listed in the NPPES registry for Samuel Ahn is (909) 427-5000.
- Does Samuel Ahn accept Medicare?
- Samuel Ahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samuel Ahn's NPI active?
- Yes — Samuel Ahn's NPI (1942286661) is active in the NPPES registry as of the last update on 2026-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.