John N. Joslyn, MD
Diagnostic Radiology Physician · Metairie, LA
John N. Joslyn, MD is a diagnostic radiology physician with a practice address in Metairie, Louisiana, and NPI 1164409066, issued on Dec 30, 2005. Check the license (Louisiana 08534R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John N. Joslyn
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 08534R LA
Self-reported in NPPES; status is on the state search - Practice location
- 4200 Houma Blvd, Metairie, LA 70006
- Phone
- (504) 454-4133
- Enumerated
- Dec 30, 2005
- Record last updated
- Nov 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (504) 456-8125
- Medicaid IDs
- 2914645 OH
1911321 LA
808329500 ID - Medicare enrollment
- Enrolled (PECOS I20060417000163); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 506 in Louisiana → Look up another NPI →
Also registered at 4200 Houma Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John N. Joslyn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 08534RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Administrators OF The Tulane Educational FundNew Orleans, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John N. Joslyn among 506 diagnostic radiology physician records in Louisiana
John N. Joslyn, MD is one of 506 diagnostic radiology physician records with a practice address in Louisiana. 74% 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, 83% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1979 · median 2001 among the 351 with a school on file
- Record last updated2011 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Louisiana
There are 506 diagnostic radiology physician records in Louisiana.
All 506 in Louisiana → Every provider in Metairie → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Dan Fertel, MDMetairie, LA 700061568467157
- Rafael Figueroa, MDMetairie, LA 700061568467462
- Daniel Fontanez, MDMetairie, LA 700061821093717
- Susan Fuzzard, MDMetairie, LA 700061457356040
- Christopher Lawrence, MDMetairie, LA 700061851396725
- Richard LevineMetairie, LA 700061821031592
- Mary Lobrano, MDMetairie, LA 700061164427753
- Carol Luttrell, MDMetairie, LA 700061871598474
Common questions
What is John N. Joslyn, MD's NPI number?
John N. Joslyn, MD's National Provider Identifier (NPI) is 1164409066, issued on Dec 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John N. Joslyn, MD located?
The NPPES record lists a practice address at 4200 Houma Blvd, Metairie, LA, 70006. Phone: (504) 454-4133. Providers update this record themselves, so call before visiting.
How can I verify John N. Joslyn, MD's license?
NPPES lists Louisiana license number 08534R, 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.
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.