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DR. HARRIS MARSHALL BLACKMAN M.D.
NPI 1629041116
Specialist in Marrero, LA

Active since February 07, 2006CLIA 19D0724658 · Microscopy
1111 MEDICAL CENTER BLVD, SUITE N-401, MARRERO, LA 70072(504) 347-2141(504) 349-6555 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Harris Marshall Blackman M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. HARRIS MARSHALL BLACKMAN M.D. (NPI 1629041116) is an individual specialist in Marrero, Louisiana, licensed in Louisiana (013299) and active in the NPI registry since February 2006. He holds a CLIA Microscopy certificate valid through August 31, 2028.

NPPES Registry Identity

NPI1629041116
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. HARRIS MARSHALL BLACKMANCredential: M.D.
Location Address1111 MEDICAL CENTER BLVD, SUITE N-401Marrero, LA 70072-3151
Mailing Address3800 Edenborn AveMetairie, LA 70002-1522 · (504) 456-2871 · Fax (504) 349-6555
Phone(504) 347-2141
Fax(504) 349-6555
Sole ProprietorNo
Enumeration DateFebruary 7, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1629041116 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in LA · 013299
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
1111 MEDICAL CENTER BLVD, Marrero, LA 70072
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Other Identifiers 1

Medicaid1308340LA

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 19D0724658

Harris M Blackman MD, LLC · Marrero, LA
Active · expires Aug 31, 2028
CLIA Number19D0724658
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorWalker Jones
Laboratory Phone(504) 347-2141
Laboratory LocationHarris M Blackman MD, LLC1111 Medical Center Blvd # N 401, Marrero, LA 70072
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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.

LABADIE AND LABADIE A PROFESSIONAL LLC
Specialist
1111 MEDICAL CENTER BLVD, SUITE 250 SOUTH
MARRERO, LA 70072
Jefferson Parish (504) 349-6207
THELMA SONZA N.P.
Nurse Practitioner (Family)
1111 MEDICAL CENTER BLVD, SUITE 613N
MARRERO, LA 70072
Jefferson Parish (504) 394-6800
DR. JOSEPH GUARNIERI M.D.
Ophthalmology
1111 MEDICAL CENTER BLVD, SUITE N-213
MARRERO, LA 70072
Jefferson Parish (504) 349-6213
CHARLES JOSEPH BALLAY II M.D.
Otolaryngology
1111 MEDICAL CENTER BLVD, SUITE 707N
MARRERO, LA 70072
Jefferson Parish (504) 934-8550
DR. PRAMELA R GANJI MD
Family Medicine
1111 MEDICAL CENTER BLVD, STE 304 NORTH
MARRERO, LA 70072
Jefferson Parish (504) 349-6325
WEST JEFFERSON PHYSICIAN SERVICES
Internal Medicine
1111 MEDICAL CENTER BLVD, SUITE S850
MARRERO, LA 70072
Jefferson Parish (504) 349-6450
MS. MEGHAN CATHERINE MESSONNIER PA-C
Physician Assistant (Medical)
1111 MEDICAL CENTER BLVD, SUITE S-450
MARRERO, LA 70072
Jefferson Parish (504) 349-6423
KAELYNN LANDECHE FRANCISCO APRN
Nurse Practitioner
1111 MEDICAL CENTER BLVD
MARRERO, LA 70072
Jefferson Parish (504) 349-6945

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 Harris Blackman's NPI number?

The NPI number for Harris Blackman is 1629041116. It was assigned to this individual provider in the NPPES registry on February 7, 2006.

Where is Harris Blackman located?

Harris Blackman practices at 1111 Medical Center Blvd Suite N-401, Marrero, LA 70072. The listed phone number is (504) 347-2141.

What is Harris Blackman's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Does Harris Blackman hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 19D0724658) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Harris Blackman was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.