Andrew Mak, M.D.
NPI 1306227376 · Hematology & Oncology Physician · Amarillo, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Mak, M.D. is a Hematology & Oncology Physician provider in Amarillo, TX (NPI 1306227376).
Provider details
- NPI number
- 1306227376
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- T5978 (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
11 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
670 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 277 | $137 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 257 | $92 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 82 | $127 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 25 | $173 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 15 | $124 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prochlorperazine Maleate | 79 | 41 |
| Ondansetron Hcl | 73 | 39 |
| Hydroxyurea | 44 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 41 | 15 |
| Oxycodone Hcl | 40 | 17 |
| Trazodone Hcl | 39 | 16 |
| Allopurinol | 37 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$953 across 43 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
- 2015-06-15
- Last updated
- 2022-09-16
- Certified
- 2022-09-16
Frequently asked questions
- What is Andrew Mak's NPI number?
- Andrew Mak's National Provider Identifier (NPI) is 1306227376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Mak's specialty?
- Andrew Mak is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Mak located?
- Andrew Mak's practice location on file with NPPES is 1751 Wallace Blvd, Amarillo, TX 79106-1711.
- What is Andrew Mak's phone number?
- The practice phone number listed in the NPPES registry for Andrew Mak is (806) 212-4673.
- Does Andrew Mak accept Medicare?
- Andrew Mak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Mak's NPI active?
- Yes — Andrew Mak's NPI (1306227376) is active in the NPPES registry as of the last update on 2022-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.