John Joslyn, MD
NPI 1164409066 · Diagnostic Radiology Physician · Metairie, LA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Joslyn, MD is a Diagnostic Radiology Physician provider in Metairie, LA (NPI 1164409066).
Provider details
- NPI number
- 1164409066
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 08534R (LA)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
445 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 143 | $38 |
| Mri Scan of Brain Before and After Contrast70553 | 70 | $104 |
| Mri Scan of Brain Without Contrast70551 | 52 | $66 |
| X-Ray of Chest, 1 View71045 | 35 | $8 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 31 | $76 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 24 | $75 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-30
- Last updated
- 2011-11-23
Frequently asked questions
- What is John Joslyn's NPI number?
- John Joslyn's National Provider Identifier (NPI) is 1164409066, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Joslyn's specialty?
- John Joslyn is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Joslyn located?
- John Joslyn's practice location on file with NPPES is 4200 Houma Blvd, Metairie, LA 70006-2970.
- What is John Joslyn's phone number?
- The practice phone number listed in the NPPES registry for John Joslyn is (504) 454-4133.
- Does John Joslyn accept Medicare?
- John Joslyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Joslyn's NPI active?
- Yes — John Joslyn's NPI (1164409066) is active in the NPPES registry as of the last update on 2011-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.