Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marjorie Sue Fridkin, M.D.
Surgery Physician in Oakland, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427129840
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Registry record
Entity type Individual (Type 1)
Name Marjorie Sue Fridkin
Credential M.D.
Sex Female
Practice address 255 North 4th Street, Suite 2, Oakland, MD, 21550
Phone (301) 334-8282
Fax (301) 334-8468
Enumeration date Nov 10, 2006
Last updated in NPPES Dec 26, 2013
Taxonomy & licenses
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 |
|---|---|---|---|
| 2146086 | Other | MD | OPTIMUM CHOICE |
| 2146086 | Other | MD | ALLIANCE |
| 2146086 | Other | MD | MAMSI |
| 2146086 | Other | MD | MD IPA |
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.
Frequently asked questions
What is the NPI number for Marjorie Fridkin?
The National Provider Identifier (NPI) for Marjorie Fridkin is 1427129840, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marjorie Fridkin practice?
The practice location on file with NPPES is in Oakland, MD. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-26.