Ghayas Issa, M.D.
NPI 1720378235 · Hematology & Oncology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ghayas Issa, M.D. is a Hematology & Oncology Physician provider in Houston, TX (NPI 1720378235).
Provider details
- NPI number
- 1720378235
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- R3686 (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
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
760 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 382 | $118 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 308 | $144 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 28 | $182 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 24 | $79 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 18 | $56 |
Typical Medicare-allowed amounts for these services range $56–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Venetoclaxbrand: Venclexta | 57 | 15 |
| Levofloxacin | 32 | 20 |
| Posaconazole | 26 | — |
| Valacyclovir Hclbrand: Valacyclovir | 17 | 11 |
| Gilteritinib Fumaratebrand: Xospata | 17 | — |
| Prednisone | 15 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,999 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
Additional practice locations (2)
- 10 Union Sq EPhillips Ambulatory Care CenterNew York, NY 10003-3314Phone: (212) 844-8100
- 10 Union Sq EPhillips Ambulatory Care CenterNew York, NY 10003-3314Phone: (212) 844-8100
Registry dates
- Enumerated
- 2011-04-18
- Last updated
- 2019-02-28
Frequently asked questions
- What is Ghayas Issa's NPI number?
- Ghayas Issa's National Provider Identifier (NPI) is 1720378235, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ghayas Issa's specialty?
- Ghayas Issa is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ghayas Issa located?
- Ghayas Issa's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030.
- What is Ghayas Issa's phone number?
- The practice phone number listed in the NPPES registry for Ghayas Issa is (713) 792-6161.
- Does Ghayas Issa accept Medicare?
- Ghayas Issa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ghayas Issa's NPI active?
- Yes — Ghayas Issa's NPI (1720378235) is active in the NPPES registry as of the last update on 2019-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.