James Mackey, MD
NPI 1356388870 · Medical Oncology Physician · Southlake, TX
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Mackey, MD is a Medical Oncology Physician provider in Southlake, TX (NPI 1356388870).
Provider details
- NPI number
- 1356388870
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L2999 (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
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
708 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 275 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 97 | $91 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 91 | $137 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 58 | $76 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 48 | $114 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 137 | 75 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 114 | 44 |
| Prochlorperazine Maleate | 87 | 46 |
| Lenalidomide | 77 | 15 |
| Dexamethasone | 76 | 30 |
| Ibrutinibbrand: Imbruvica | 74 | — |
| Letrozole | 70 | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$428 across 13 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
- 2006-06-01
- Last updated
- 2019-04-22
Frequently asked questions
- What is James Mackey's NPI number?
- James Mackey's National Provider Identifier (NPI) is 1356388870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Mackey's specialty?
- James Mackey is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is James Mackey located?
- James Mackey's practice location on file with NPPES is 431 E State Highway 114 Ste 470, Southlake, TX 76092-4415.
- What is James Mackey's phone number?
- The practice phone number listed in the NPPES registry for James Mackey is (817) 416-0202.
- Does James Mackey accept Medicare?
- James Mackey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Mackey's NPI active?
- Yes — James Mackey's NPI (1356388870) is active in the NPPES registry as of the last update on 2019-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.