Alda Tam, M.D.
NPI 1649283250 · Diagnostic Radiology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Interventional Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alda Tam, M.D. is a Diagnostic Radiology Physician provider in Houston, TX (NPI 1649283250).
Provider details
- NPI number
- 1649283250
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 41396 (TX)
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
19 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
277 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 | 75 | $12 |
| Review By Radiologist of Ct Guidance for Needle Placement77012 | 64 | $67 |
| X-Ray of Chest, 1 View71045 | 45 | $8 |
| Ultrasonic Guidance for Needle Placement76942 | 27 | $30 |
| Needle Biopsy of Growth of Abdominal Cavity49180 | 22 | $74 |
| Needle Biopsy of Muscle20206 | 15 | $53 |
| Core Needle Biopsy of Lung Or Center Cavity of Chest (mediastinum), Accessed Through Skin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$389 across 4 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
- 2006-08-14
- Last updated
- 2012-06-20
Frequently asked questions
- What is Alda Tam's NPI number?
- Alda Tam's National Provider Identifier (NPI) is 1649283250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alda Tam's specialty?
- Alda Tam is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Alda Tam located?
- Alda Tam's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4009.
- What is Alda Tam's phone number?
- The practice phone number listed in the NPPES registry for Alda Tam is (713) 792-6161.
- Does Alda Tam accept Medicare?
- Alda Tam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alda Tam's NPI active?
- Yes — Alda Tam's NPI (1649283250) is active in the NPPES registry as of the last update on 2012-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.