William Imsais, MD
NPI 1770548349 · Internal Medicine Physician · New Orleans, LA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Imsais, MD is a Internal Medicine Physician provider in New Orleans, LA (NPI 1770548349).
Provider details
- NPI number
- 1770548349
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- M7290 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 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
129 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 104 | $177 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 25 | $122 |
Typical Medicare-allowed amounts for these services range $122–$177 (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)
- 4502 Medical DrSan Antonio, TX 78229-4402Phone: (210) 358-4000
Registry dates
- Enumerated
- 2006-04-18
- Last updated
- 2019-07-03
Frequently asked questions
- What is William Imsais's NPI number?
- William Imsais's National Provider Identifier (NPI) is 1770548349, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Imsais's specialty?
- William Imsais is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Imsais located?
- William Imsais's practice location on file with NPPES is 2000 Canal St, New Orleans, LA 70112-3018.
- What is William Imsais's phone number?
- The practice phone number listed in the NPPES registry for William Imsais is (504) 702-3000.
- Does William Imsais accept Medicare?
- William Imsais is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Imsais's NPI active?
- Yes — William Imsais's NPI (1770548349) is active in the NPPES registry as of the last update on 2019-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.