Allison Tan, M.D.
NPI 1942521505 · Vascular & Interventional Radiology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Tan, M.D. is a Vascular & Interventional Radiology Physician provider in Philadelphia, PA (NPI 1942521505).
Provider details
- NPI number
- 1942521505
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 25MA09780200 (NJ)
Specialties & taxonomies
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
16 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
309 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) |
|---|---|---|
| Ultrasonic Guidance for Blood Vessel Access76937 | 44 | $14 |
| Drainage of Fluid From Abdominal Cavity Using Imaging Guidance49083 | 39 | $105 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 39 | $12 |
| Fluoroscopic Guidance for Insertion Or Removal of Central Vein Access Device77001 | 38 | $18 |
| Ultrasonic Guidance for Needle Placement76942 | 31 | $30 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,156 across 10 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
- 2010-06-17
- Last updated
- 2023-11-17
- Certified
- 2023-11-17
Frequently asked questions
- What is Allison Tan's NPI number?
- Allison Tan's National Provider Identifier (NPI) is 1942521505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Tan's specialty?
- Allison Tan is listed in the NPPES registry with a primary specialty of Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Allison Tan located?
- Allison Tan's practice location on file with NPPES is 111 S. 11th Street, Philadelphia, PA 19107-4824.
- What is Allison Tan's phone number?
- The practice phone number listed in the NPPES registry for Allison Tan is (215) 955-2900.
- Does Allison Tan accept Medicare?
- Allison Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allison Tan's NPI active?
- Yes — Allison Tan's NPI (1942521505) is active in the NPPES registry as of the last update on 2023-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.