William Irby, DO
NPI 1902874779 · Family Medicine Physician · Hamilton, MO
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Irby, DO is a Family Medicine Physician provider in Hamilton, MO (NPI 1902874779).
Provider details
- NPI number
- 1902874779
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- R3G66 (MO)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
12 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
43 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) |
|---|---|---|
| Automated Urinalysis Test81003 | 43 | $2 |
Typical Medicare-allowed amounts for these services range $2–$2 (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 · 167 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 701 | 104 |
| Atorvastatin Calcium | 579 | 138 |
| Levothyroxine Sodium | 486 | 80 |
| Lisinopril | 418 | 93 |
| Gabapentin | 306 | 61 |
| Metformin Hcl | 269 | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,040 across 61 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 (11)
- 109 N Main StBraymer, MO 64624-9325Phone: (660) 645-2218
- 707 Victory LnCainsville, MO 64632-9506Phone: (660) 893-5750
- 313 S US Highway 169Gower, MO 64454-9116Phone: (816) 424-6427
- One Cross StreetHamilton, MO 64644-0248Phone: (816) 583-2713Fax: (816) 583-2342
- 305 Rhode Island StKing City, MO 64463-9622Phone: (660) 535-4347
- 1303 State StMound City, MO 64470-1717Phone: (660) 442-5464
- 5001 Lake AveSaint Joseph, MO 64504-1170Phone: (816) 238-7788
- 1515 Saint Joseph AveSaint Joseph, MO 64505-2631Phone: (816) 233-3338
- 503 S 6th StSaint Joseph, MO 64501-2224Phone: (816) 233-8536
Registry dates
- Enumerated
- 2006-03-09
- Last updated
- 2023-03-07
- Certified
- 2021-11-10
Frequently asked questions
- What is William Irby's NPI number?
- William Irby's National Provider Identifier (NPI) is 1902874779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Irby's specialty?
- William Irby is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Irby located?
- William Irby's practice location on file with NPPES is 101 Cross St, Hamilton, MO 64644-8311.
- What is William Irby's phone number?
- The practice phone number listed in the NPPES registry for William Irby is (816) 583-2151.
- Does William Irby accept Medicare?
- William Irby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Irby's NPI active?
- Yes — William Irby's NPI (1902874779) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.