Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marc R Greenbaum, DDS
Dentist in Lakewood, OH · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427094564
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Registry record
Entity type Individual (Type 1)
Name Dr. Marc R Greenbaum
Credential DDS
Sex Male
Practice address 18611 Detroit Ave, Lakewood, OH, 44107
Phone (216) 221-2210
Enumeration date Jun 20, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0455449 | Medicaid | OH | - |
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 Marc Greenbaum?
The National Provider Identifier (NPI) for Marc Greenbaum is 1427094564, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marc Greenbaum practice?
The practice location on file with NPPES is in Lakewood, OH. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Marc R Greenbaum DDS Inc Dentist · Lakewood, OH NPI 1811939564 Edward Glowski Dentist · Lakewood, OH NPI 1346285368 Michael Pap General Practice Dentistry · Lakewood, OH NPI 1952589756 Michael S. Pap DDS Inc General Practice Dentistry · Lakewood, OH NPI 1588842306 Westside Dental Sleep Center LLC Prosthodontics · Lakewood, OH NPI 1063023430
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.