Basic Information
Provider Information
NPI: 1831170968
EntityType: 1
ReplacementNPI:  
OrganizationName:  
LastName: MAASSEN
FirstName: GARY
MiddleName:  
NamePrefix:  
NameSuffix:  
Credential: M.D.
OtherOrganizationName:  
OtherOrganizationType:  
OtherLastName:  
OtherFirstName:  
OtherMiddleName:  
OtherNamePrefix:  
OtherNameSuffix:  
OtherCredential:  
OtherLastNameType:  
Mailing Information
Address1: PO BOX 23340
Address2:  
City: SAINT LOUIS
State: MO
PostalCode: 631563340
CountryCode: US
TelephoneNumber: 3148437333
FaxNumber: 3148439946
Practice Location
Address1: 5034 GRIFFIN RD
Address2:  
City: SAINT LOUIS
State: MO
PostalCode: 631283418
CountryCode: US
TelephoneNumber: 3148437333
FaxNumber: 3148439946
Other Information
ProviderEnumerationDate: 11/07/2005
LastUpdateDate: 09/24/2012
NPIDeactivationReasonCode:  
NPIDeactivationDate:  
NPIReactivationDate:  
ProviderGenderCode: M
AuthorizedOfficialLastName:  
AuthorizedOfficialFirstName:  
AuthorizedOfficialMiddleName:  
AuthorizedOfficialTitleorPosition:  
AuthorizedOfficialTelephone:  
IsSoleProprietor: N
IsOrganizationSubpart:  
ParentOrganizationLBN:  
AuthorizedOfficialNamePrefix:  
AuthorizedOfficialNameSuffix:  
AuthorizedOfficialCredential:  
NPICertificationDate:  

Taxonomy Information
TaxonomyLicenseStateSwitchTaxonomyGroupTaxonomyTypeTaxonomyClassSubSpecialty
207R00000XR7H60MOY Allopathic & Osteopathic PhysiciansInternal Medicine 

ID Information
IDTypeStateIssuerDescription
12746601MOGHPOTHER
2609301MOBCBSOTHER
26029301MOHEALTHLINKOTHER
040051901MOUHCOTHER
454090301MOAETNAOTHER
00000001002401MOESSENCEOTHER
12749001MOGHPOTHER
F9283301MOMERCYOTHER
2568801MOBCBSOTHER


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