William Littleton
NPI 1699249953 · Certified Registered Nurse Anesthetist · Baton Rouge, LA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Littleton is a Certified Registered Nurse Anesthetist provider in Baton Rouge, LA (NPI 1699249953).
Provider details
- NPI number
- 1699249953
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 151181 (LA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 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
71 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) |
|---|---|---|
| Anesthesia for X-Ray Or Radiation Therapy01922 | 28 | $166 |
| Anesthesia for Procedure to Correct Abnormal Heart Rhythm00410 | 20 | $90 |
| Anesthesia for Insertion of Permanent Heart Pacemaker00530 | 12 | $179 |
| Anesthesia for Procedure to Assess Heart Electrical Activity00537 | 11 | $400 |
Typical Medicare-allowed amounts for these services range $90–$400 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$354 across 4 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
- 2019-01-18
- Last updated
- 2019-01-18
Frequently asked questions
- What is William Littleton's NPI number?
- William Littleton's National Provider Identifier (NPI) is 1699249953, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Littleton's specialty?
- William Littleton is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Littleton located?
- William Littleton's practice location on file with NPPES is 8585 Picardy Ave, Baton Rouge, LA 70809-3748.
- What is William Littleton's phone number?
- The practice phone number listed in the NPPES registry for William Littleton is (225) 906-2570.
- Does William Littleton accept Medicare?
- William Littleton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Littleton's NPI active?
- Yes — William Littleton's NPI (1699249953) is active in the NPPES registry as of the last update on 2019-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.