M. Margaret O'Brien, MD
M. Margaret O'Brien is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Mobile, AL, registered in the NPPES registry with NPI 1992750863 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1992750863 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | M. Margaret O'Brien |
| Credential | MD |
| Sex | Female |
| Practice address | 2451 FILLINGIM ST, PATHOLOGY, Mobile, AL, 36617 |
| Phone | 2514717790 |
| Fax | 2514717715 |
| Enumeration date | 2006-05-22 |
| Last updated in NPPES | 2008-04-11 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician | Primary | 18834 | AL |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00120715 | Medicaid | MS | — |
| 51510104 | Other | AL | BLUE CROSS |
| 51510105 | Other | AL | BLUE CROSS |
| 11-10215 | Other | AL | UNITED HEALTH CARE |
| 1165930 | Medicaid | LA | — |
Copy-ready billing details
Provider: M. O'Brien, MD NPI: 1992750863 Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician) Address: 2451 FILLINGIM ST, PATHOLOGY, Mobile, AL, 36617
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1225036312 | Roy Gandy | Individual | Surgery Physician | Mobile, AL |
| 1659367035 | Mark Etheridge | Individual | Certified Registered Nurse Anesthetist | Mobile, AL |
| 1518945245 | Tracey Taylor | Individual | Acute Care Nurse Practitioner | Mobile, AL |
| 1588643720 | Forrest Neese | Individual | Certified Registered Nurse Anesthetist | Mobile, AL |
| 1184695348 | Kristina Duffy | Individual | Neurology Physician | Mobile, AL |
| 1427023696 | Michael Ambrose | Individual | Emergency Medicine Physician | Mobile, AL |
| 1518936921 | Dharam Paul | Individual | Cardiovascular Disease Physician | Mobile, AL |
| 1437114741 | Fred Brackett | Individual | Certified Registered Nurse Anesthetist | Mobile, AL |
Verify this record
Cross-check NPI 1992750863 against the authoritative CMS record: view M. Margaret O'Brien on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-04-11.