WILLIAM OREN BLALOCK MD
NPI 1073570479
Internal Medicine in New Orleans, LA
About William Oren Blalock Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM OREN BLALOCK MD (NPI 1073570479) is an individual internal medicine provider in New Orleans, Louisiana, licensed in Louisiana (MD.14167R) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and is a graduate of Medical College Of Georgia School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William Oren Blalock Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show William Blalock reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Orleans, LA 70121
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
Terrytown, LA 70056
- Reassigned Medicare billing, Louisiana enrollment
- 417 clinicians in this Medicare group
Baton Rouge, LA 70816
- Reassigned Medicare billing, Louisiana enrollment
- 156 clinicians in this Medicare group
Meridian, MS 39301
- Reassigned Medicare billing, Mississippi enrollment
- 349 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ochsner Medical Center Acute
Acute Care Hospitals · New Orleans, LAOchsner St Anne General Hospital
Critical Access Hospitals · Raceland, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70121 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Blalock's NPI number?
The NPI number for William Blalock is 1073570479. It was assigned to this individual provider in the NPPES registry on April 28, 2006.
Where is William Blalock located?
William Blalock practices at 1514 Jefferson Hwy, New Orleans, LA 70121. The listed phone number is (504) 842-4000.
What is William Blalock's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Blalock enrolled in Medicare?
Yes. William Blalock is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Blalock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Blalock reassigns Medicare benefits to 4 organizations: Ochsner Clinic LLC (New Orleans, LA), Belle Chasse Physician Services LLC (Terrytown, LA), Mayfair Physician Services, LLC (Baton Rouge, LA) and Medical Foundation, Inc. (Meridian, MS). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Blalock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Blalock accept?
Health plans from CHRISTUS Health Plan, Cigna Healthcare and HMO Louisiana list William Blalock as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Blalock affiliated with any hospitals?
According to CMS data, William Blalock is affiliated with Ochsner Medical Center Acute and Ochsner St Anne General Hospital.
When was this NPI record last updated?
The NPPES record for William Blalock was last updated on April 29, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William Oren Blalock, MD · NPI 1073570479
Internal Medicine physician in New Orleans, Louisiana. Individual provider, active in the CMS NPPES registry since April 28, 2006.
## Identity
- **NPI:** 1073570479 (Entity type: Individual)
- **Enumerated:** April 28, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD.14167R (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1514 JEFFERSON HWY, New Orleans, LA 70121-2429
- **Phone:** (504) 842-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Ochsner Clinic LLC (NPI 1215136080, New Orleans, LA); Belle Chasse Physician Services LLC (NPI 1245653237, Terrytown, LA); Mayfair Physician Services, LLC (NPI 1831688365, Baton Rouge, LA); Medical Foundation, Inc. (NPI 1609820539, Meridian, MS) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Georgia School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** April 29, 2010
- **Other identifiers:** Medicare PIN 4A4927061 (LA); Medicaid 09023261 (MS); Medicaid 1490369 (LA); and 2 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1073570479) · Data from the CMS NPPES public registry.