William Chiang, MD
Pain Medicine (Anesthesiology) Physician · Hammond, LA
William Chiang, MD is a pain medicine (anesthesiology) physician with a practice address in Hammond, Louisiana, and NPI 1194256867, issued on Mar 24, 2017. Check the license (Louisiana 331557, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Chiang
- Credential
- MD
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License numbers
- 331557 LA
29019 MS
Self-reported in NPPES; status is on the state search - Practice location
- 19065 Dr John Lambert Dr Ste 2000-A, Hammond, LA 70403
- Phone
- (985) 338-2423
- Enumerated
- Mar 24, 2017
- Record last updated
- Jun 23, 2022
- Medicare enrollment
- Enrolled (PECOS I20220725002655); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 2017
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 57 in Louisiana → Look up another NPI →
Verify William Chiang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 331557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
2,084 Medicare Part D claims for 309 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were under 1% of claims. 790 claims were for opioids.
Most prescribed
- Gabapentin413 claims
- Oxycodone-Acetaminophen248 claims
- Meloxicam241 claims
- Methocarbamol223 claims
- Hydrocodone-Acetaminophen196 claims
- Tramadol Hcl146 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 99.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $245.54
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 2,789 providers of this specialty with any payment received $3,225.41 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
- Diagnostic And Interventional Spinal Care OF LouisianaCovington, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Chiang among 57 pain medicine (anesthesiology) physician records in Louisiana
William Chiang, MD is one of 57 pain medicine (anesthesiology) physician records with a practice address in Louisiana. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 86% of them.
- NPI issued2017 · 86% of these records are older, 7% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2017 · median 2007 among the 44 with a school on file
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in Louisiana
There are 57 pain medicine (anesthesiology) physician records in Louisiana.
All 57 in Louisiana → Every provider in Hammond → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- Mohamed Elkersh, MDHammond, LA 704031366475493
- Shaun Kuoni, M.D.Hammond, LA 704031992159743
- Nathan Harrison, M.D.Covington, LA 704331801916523
- Lowell Shih, M.D.Covington, LA 704331972846426
- Blake Sowers, MDCovington, LA 704331316524325
- Alexander Fontenot, M.D.Lacombe, LA 704451932589264
- Mark Motejunas, M.D.Lacombe, LA 704451093165789
- Scott Branting, MDHouma, LA 703601861457517
Common questions
What is William Chiang, MD's NPI number?
William Chiang, MD's National Provider Identifier (NPI) is 1194256867, issued on Mar 24, 2017. An NPI identifies a provider in billing; it is not a license.
Where is William Chiang, MD located?
The NPPES record lists a practice address at 19065 Dr John Lambert Dr Ste 2000-A, Hammond, LA, 70403. Phone: (985) 338-2423. Providers update this record themselves, so call before visiting.
How can I verify William Chiang, MD's license?
NPPES lists Louisiana license number 331557, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Chiang, MD prescribe under Medicare Part D?
In 2024, William Chiang, MD had 2,084 Medicare Part D claims for 309 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. Part D covers Medicare prescriptions only.
What is William Chiang, MD's MIPS final score?
The 2023 MIPS final score is 99.2 of 100, reported for the practice group. 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.