Debra Irwin, MD
NPI 1659386712 · Family Medicine Physician · Bastrop, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Debra Irwin, MD is a Family Medicine Physician provider in Bastrop, TX (NPI 1659386712).
Provider details
- NPI number
- 1659386712
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G3490 (TX)
Specialties & taxonomies
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
120 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 120 | $5 |
Typical Medicare-allowed amounts for these services range $5–$5 (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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 18 | — |
| Metformin Hcl | 18 | — |
| Tramadol Hcl | 16 | — |
| Atorvastatin Calcium | 14 | 12 |
| Levothyroxine Sodium | 14 | — |
| Amlodipine Besylate | 13 | — |
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.
Practice location
Mailing address
Additional practice locations (1)
- 400 Harborside DrGalveston, TX 77555-0001Phone: (409) 772-2222
Registry dates
- Enumerated
- 2006-07-29
- Last updated
- 2025-02-04
- Certified
- 2025-02-04
Frequently asked questions
- What is Debra Irwin's NPI number?
- Debra Irwin's National Provider Identifier (NPI) is 1659386712, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Debra Irwin's specialty?
- Debra Irwin is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Debra Irwin located?
- Debra Irwin's practice location on file with NPPES is 275 Jackson St, Bastrop, TX 78602-4316.
- What is Debra Irwin's phone number?
- The practice phone number listed in the NPPES registry for Debra Irwin is (512) 321-7137.
- Does Debra Irwin accept Medicare?
- Debra Irwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Debra Irwin's NPI active?
- Yes — Debra Irwin's NPI (1659386712) is active in the NPPES registry as of the last update on 2025-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.