William H. Hass, MD
Anesthesiology Physician · Huntsville, AL
William H. Hass, MD is an anesthesiology physician with a practice address in Huntsville, Alabama, and NPI 1801871637, issued on Dec 14, 2005. Check the license (Alabama 19501, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William H. Hass
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 19501 AL
Self-reported in NPPES; status is on the state search - Practice location
- 1 Hospital Dr SW, Huntsville, AL 35801
- Phone
- (256) 880-4187
- Enumerated
- Dec 14, 2005
- Record last updated
- Jan 15, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid IDs
- 051510517 AL
266970600 FL - Medicare enrollment
- Enrolled (PECOS I20111031000690); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1972
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 581 in Alabama → Look up another NPI →
Also registered at 1 Hospital Dr SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William H. Hass in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license 19501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $205.24
11 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Gut PCDothan, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William H. Hass among 581 anesthesiology physician records in Alabama
William H. Hass, MD is one of 581 anesthesiology physician records with a practice address in Alabama. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1972 · median 2004 among the 421 with a school on file
- Record last updated2013 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in Alabama
There are 581 anesthesiology physician records in Alabama.
All 581 in Alabama → Every provider in Huntsville → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Gregory Bouska, M.D.Huntsville, AL 358011366421851
- Allen Campbell, M.D.Huntsville, AL 358011093794497
- Subba Chenumolu, M.D.Huntsville, AL 358011942289343
- Robert Clark, M.D.Huntsville, AL 358011164401410
- Michael Degraaff, M.D.Huntsville, AL 358011972582229
- Charles Estopinal, M.D.Huntsville, AL 358011962481218
- Michael Hoger, D.O.Huntsville, AL 358011336128420
- Alayne Lasher, M.D.Huntsville, AL 358011417935099
Common questions
What is William H. Hass, MD's NPI number?
William H. Hass, MD's National Provider Identifier (NPI) is 1801871637, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William H. Hass, MD located?
The NPPES record lists a practice address at 1 Hospital Dr SW, Huntsville, AL, 35801. Phone: (256) 880-4187. Providers update this record themselves, so call before visiting.
How can I verify William H. Hass, MD's license?
NPPES lists Alabama license number 19501, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is William H. Hass, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.