Alexander Iskrenko, M.D., PH.D.
NPI 1972798411 · Internal Medicine Physician · Amarillo, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Iskrenko, M.D., PH.D. is a Internal Medicine Physician provider in Amarillo, TX (NPI 1972798411).
Provider details
- NPI number
- 1972798411
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- N7285 (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
18 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
1,146 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 | 567 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 386 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 135 | $109 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 58 | $163 |
Typical Medicare-allowed amounts for these services range $75–$163 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 55 | 53 |
| Ondansetronbrand: Ondansetron Odt | 48 | 46 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 23 | 23 |
| Atorvastatin Calcium | 21 | 21 |
| Levofloxacin | 15 | 13 |
| Losartan Potassium | 12 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$51 across 2 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
- 2007-09-07
- Last updated
- 2011-09-30
Frequently asked questions
- What is Alexander Iskrenko's NPI number?
- Alexander Iskrenko's National Provider Identifier (NPI) is 1972798411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Iskrenko's specialty?
- Alexander Iskrenko is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Iskrenko located?
- Alexander Iskrenko's practice location on file with NPPES is 3631 Brennan Blvd Apt 6f, Amarillo, TX 79121-1641.
- What is Alexander Iskrenko's phone number?
- The practice phone number listed in the NPPES registry for Alexander Iskrenko is (405) 255-5210.
- Does Alexander Iskrenko accept Medicare?
- Alexander Iskrenko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Iskrenko's NPI active?
- Yes — Alexander Iskrenko's NPI (1972798411) is active in the NPPES registry as of the last update on 2011-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.