Avi Markowitz, M.D.
NPI 1336155662 · Hematology & Oncology Physician · Galveston, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Avi Markowitz, M.D. is a Hematology & Oncology Physician provider in Galveston, TX (NPI 1336155662).
Provider details
- NPI number
- 1336155662
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- H3701 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
114 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 62 | $95 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 32 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 20 | $141 |
Typical Medicare-allowed amounts for these services range $16–$141 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 95 | 38 |
| Ibrutinibbrand: Imbruvica | 44 | — |
| Abemaciclibbrand: Verzenio | 38 | — |
| Letrozole | 23 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 18 | — |
| Prochlorperazine Maleate | 18 | 13 |
| Ondansetronbrand: Ondansetron Odt | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-31
- Last updated
- 2026-03-19
- Certified
- 2026-03-19
Frequently asked questions
- What is Avi Markowitz's NPI number?
- Avi Markowitz's National Provider Identifier (NPI) is 1336155662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Avi Markowitz's specialty?
- Avi Markowitz is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Avi Markowitz located?
- Avi Markowitz's practice location on file with NPPES is 301 University Blvd, Galveston, TX 77555-1022.
- What is Avi Markowitz's phone number?
- The practice phone number listed in the NPPES registry for Avi Markowitz is (409) 747-0890.
- Does Avi Markowitz accept Medicare?
- Avi Markowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Avi Markowitz's NPI active?
- Yes — Avi Markowitz's NPI (1336155662) is active in the NPPES registry as of the last update on 2026-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.