John Williams, D.O.
NPI 1417334962 · Anesthesiology Physician · Des Moines, IA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Williams, D.O. is a Anesthesiology Physician provider in Des Moines, IA (NPI 1417334962).
Provider details
- NPI number
- 1417334962
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 9408565 (KS)
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 tenure28% of score
11 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
62 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) |
|---|---|---|
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 18 | $53 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 16 | $40 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 15 | $274 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 13 | $13 |
Typical Medicare-allowed amounts for these services range $13–$274 (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.
Practice location
Mailing address
Additional practice locations (1)
- 4201 Westown Pkwy Ste 236West Des Moines, IA 50266-6720Phone: (515) 401-1950Fax: (515) 401-1955
Registry dates
- Enumerated
- 2015-05-05
- Last updated
- 2024-06-26
- Certified
- 2024-06-26
Frequently asked questions
- What is John Williams's NPI number?
- John Williams's National Provider Identifier (NPI) is 1417334962, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Williams's specialty?
- John Williams is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Williams located?
- John Williams's practice location on file with NPPES is 1200 Pleasant St, Des Moines, IA 50309-1406.
- What is John Williams's phone number?
- The practice phone number listed in the NPPES registry for John Williams is (515) 241-6212.
- Does John Williams accept Medicare?
- John Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Williams's NPI active?
- Yes — John Williams's NPI (1417334962) is active in the NPPES registry as of the last update on 2024-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.