Thayer Ismaael, MD
NPI 1720305477 · Hospitalist Physician · Amarillo, TX
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thayer Ismaael, MD is a Hospitalist Physician provider in Amarillo, TX (NPI 1720305477).
Provider details
- NPI number
- 1720305477
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- P5649 (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 tenure25% of score
16 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
1,350 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 | 824 | $113 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 312 | $109 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 125 | $75 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 38 | $165 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 19 | $77 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 82 | 16 |
| Prednisone | 72 | 64 |
| Furosemide | 61 | 43 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 51 | 49 |
| Metoprolol Tartrate | 48 | 26 |
| Cefuroxime Axetilbrand: Cefuroxime | 42 | 42 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$143 across 8 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
- 2010-04-21
- Last updated
- 2019-04-18
Frequently asked questions
- What is Thayer Ismaael's NPI number?
- Thayer Ismaael's National Provider Identifier (NPI) is 1720305477, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thayer Ismaael's specialty?
- Thayer Ismaael is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Thayer Ismaael located?
- Thayer Ismaael's practice location on file with NPPES is 1600 Wallace Blvd, Amarillo, TX 79106-1799.
- What is Thayer Ismaael's phone number?
- The practice phone number listed in the NPPES registry for Thayer Ismaael is (806) 212-2129.
- Does Thayer Ismaael accept Medicare?
- Thayer Ismaael is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thayer Ismaael's NPI active?
- Yes — Thayer Ismaael's NPI (1720305477) is active in the NPPES registry as of the last update on 2019-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.