Ryan Joseph Chamberlain, M.D.
Emergency Medicine Physician · New Orleans, LA
Ryan Joseph Chamberlain, M.D. is an emergency medicine physician with a practice address in New Orleans, Louisiana, and NPI 1235373093, issued on Apr 23, 2009. Check the license (Louisiana MD.204063, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ryan Joseph Chamberlain
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- MD.204063 LA
22510 MS
Self-reported in NPPES; status is on the state search - Practice location
- 1542 Tulane Ave RM 459, New Orleans, LA 70112
- Phone
- (504) 903-3594
- Enumerated
- Apr 23, 2009
- Record last updated
- Apr 16, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (504) 903-4569
- Medicaid ID
- 1883212 LA
- Medicare enrollment
- Enrolled (PECOS I20130920000115); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2009
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,000 in Louisiana → Look up another NPI →
Verify Ryan Joseph Chamberlain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license MD.204063Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average emergency medicine physician in 2024
252 Medicare Part D claims for 149 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Ondansetron Odt24 claims
- Cefuroxime23 claims
- Ibuprofen22 claims
- Albuterol Sulfate Hfa21 claims
- Doxycycline Hyclate18 claims
- Hydrocodone-Acetaminophen16 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.
Industry payments in 2024: $13.18
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 12,335 providers of this specialty with any payment received $953.79 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.
One hospital affiliation
- Memorial Hospital AT GulfportGulfport, MS · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Ryan Joseph Chamberlain among 1,000 emergency medicine physician records in Louisiana
Ryan Joseph Chamberlain, M.D. is one of 1,000 emergency medicine physician records with a practice address in Louisiana. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 55% of them.
- NPI issued2009 · 55% of these records are older, 42% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2009 · median 2010 among the 653 with a school on file
- Record last updated2013 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
230 emergency medicine physician records list a practice address in New Orleans
They are 230 of the 13,668 NPPES records with a practice address in New Orleans, and 1,000 emergency medicine physician records in Louisiana.
All 1,000 in Louisiana → Every provider in New Orleans → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Prateek Adhikari, M.D.New Orleans, LA 701121083788004
- Charles Chehardy, MDNew Orleans, LA 701121235160276
- John Couk, M.D.New Orleans, LA 701121740281930
- Peter Deblieux, MDNew Orleans, LA 701121538190574
- Mark Dedinsky, MDNew Orleans, LA 701121366402349
- Micelle Haydel, MDNew Orleans, LA 701121932295300
- Kathleen Hubbell, M.D.New Orleans, LA 701121154301174
- Julie Lawrence, MDNew Orleans, LA 701121669574810
Common questions
What is Ryan Joseph Chamberlain, M.D.'s NPI number?
Ryan Joseph Chamberlain, M.D.'s National Provider Identifier (NPI) is 1235373093, issued on Apr 23, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Joseph Chamberlain, M.D. located?
The NPPES record lists a practice address at 1542 Tulane Ave RM 459, New Orleans, LA, 70112. Phone: (504) 903-3594. Providers update this record themselves, so call before visiting.
How can I verify Ryan Joseph Chamberlain, M.D.'s license?
NPPES lists Louisiana license number MD.204063, 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 Ryan Joseph Chamberlain, M.D. prescribe under Medicare Part D?
In 2024, Ryan Joseph Chamberlain, M.D. had 252 Medicare Part D claims for 149 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.