Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Lee Farbman, OD
Optometrist in Frederick, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952401234
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Lee Farbman
Credential OD
Sex Male
Practice address 1560 Opossumtown Pike, Frederick, MD, 21702
Phone (301) 662-8866
Fax (301) 293-6133
Enumeration date Sep 25, 2006
Last updated in NPPES Jul 19, 2007
Taxonomy & licenses
OD — Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 4290491 | Other | — | AETNA |
| 60645801 | Other | — | CAREFIRST BCBS |
| 484151 | Other | — | AETNA-HMO |
| 60645801 | Other | — | BLUE CROSS BLUE SHIELD |
| 0001 | Other | — | BCBS FEP |
| 34510 | Other | — | ONENET |
| 34510 | Other | — | MDIPA |
| 34510 | Other | — | OPTIMUM CHOICE |
| 34510 | Other | — | ALLIANCE |
| 34510 | Other | — | MAMSI/UNITED HEALTHCARE |
| 620427 | Other | — | UNICARE |
| 620427 | Other | — | HEALTHLINK/NCPPO |
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 Mark Farbman?
The National Provider Identifier (NPI) for Mark Farbman is 1952401234, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Farbman practice?
The practice location on file with NPPES is in Frederick, MD. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-19.