John Irwin, M.D.
NPI 1518960566 · Gynecology Physician · Houston, TX
John Irwin, M.D. is a Gynecology Physician provider in Houston, TX (NPI 1518960566).
Provider details
- NPI number
- 1518960566
- Entity type
- Individual
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D9508 (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
21 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
717 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 135 | $91 |
| Screening Mammography77067 | 125 | $124 |
| Screening 3d Breast Mammography77063 | 124 | $51 |
| Stool Analysis for Blood to Screen for Colon Tumors82270 | 87 | $4 |
| Assessment of Emotional Or Behavioral Problems96127 | 60 | $5 |
| Pelvic Exam99459 | 59 | $22 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 671 | 229 |
| Medroxyprogesterone Acetate | 92 | 28 |
| Progesterone, Micronizedbrand: Progesterone | 69 | 24 |
| Zolpidem Tartrate | 65 | 36 |
| Norethindrone Ac/Eth Estradiolbrand: Norethindron-Ethinyl Estradiol | 60 | 25 |
| Raloxifene Hcl | 56 | 19 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 54 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$151 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
- 2005-05-23
- Last updated
- 2019-07-09
Frequently asked questions
- What is John Irwin's NPI number?
- John Irwin's National Provider Identifier (NPI) is 1518960566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Irwin's specialty?
- John Irwin is listed in the NPPES registry with a primary specialty of Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is John Irwin located?
- John Irwin's practice location on file with NPPES is 7900 Fannin St Ste 4000, Houston, TX 77054-2935.
- What is John Irwin's phone number?
- The practice phone number listed in the NPPES registry for John Irwin is (713) 512-7500.
- Is John Irwin's NPI active?
- Yes — John Irwin's NPI (1518960566) is active in the NPPES registry as of the last update on 2019-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.