OAK LEYDEN DEVELOPMENTAL SERVICES
Complete NPI Record 1033254347
Speech-Language Pathologist in Oak Park, IL

Active since February 21, 2007CLIA 14D2204320 · Waiver

411 CHICAGO AVE, OAK PARK, IL 60302(708) 524-1050(708) 524-2469 Get Directions

NPPES record last updated: January 27, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Complete NPI Dataset

This page contains the complete raw NPPES record for Oak Leyden Developmental Services (NPI 1033254347), a speech-language pathologist organization in Oak Park, IL. All 87 fields on file are listed with their current values and official NPPES definitions, exactly as recorded in the National Plan and Provider Enumeration System. Only fields that contain data are included, so the number of fields shown varies from one NPI record to another.

Use the tools below to filter fields by category, search within the record, or jump straight to a specific field. You can download the full record as a CSV, JSON, or text file, or filter first and export only the fields you need. The Print Clean Summary button produces a printer-friendly copy of the record.

Search NPI Record

NPI Record Category

Jump to NPI Field

Registry File Document Utilities

NPI: 1033254347: The 10-position all-numeric identification number assigned by the NPS to uniquely identify a health care provider. The NPI number includes an ISO standard check-digit in the 10th position. There is no intelligence about the health care provider in the number.
Entity Type Code: 2: Code describing the type of health care provider that is being assigned an NPI. Codes are 1 = (Person): individual human being who furnishes health care; 2 = (Non-person): entity other than an individual human being that furnishes health care (for example, hospital, SNF, hospital subunit, pharmacy, or HMO).
Employer Identification Number EIN: Not available: The Employer Identification Number (EIN), assigned by the IRS, of the provider being identified.
Provider Organization Name Legal Business Name: OAK LEYDEN DEVELOPMENTAL SERVICES: The name of the organization provider. If the provider is an organization, this is the legal business name.
Provider First Line Business Mailing Address: 411 CHICAGO AVE: The first line mailing address of the provider being identified. This data element may contain the same information as "Provider first line location address".
Provider Business Mailing Address City Name: OAK PARK: The city name in the mailing address of the provider being identified.
Provider Business Mailing Address State Name: IL: The State or Province name in the mailing address of the provider being identified. This data element may contain the same information as "Provider location address State name".
Provider Business Mailing Address Postal Code: 603022233: The postal ZIP or zone code in the mailing address of the provider being identified. NOTE: ZIP code plus 4-digit extension, if available. This data element may contain the same information as "Provider location address postal code".
Provider Business Mailing Address Country Code If outside U S : US: The country code in the mailing address of the provider being identified. This data element may contain the same information as "Provider location address country code".
Provider Business Mailing Address Telephone Number: 7085241050: The telephone number associated with mailing address of the provider being identified. This data element may contain the same information as "Provider location address telephone number".
Provider Business Mailing Address Fax Number: 7085242469: The fax number associated with the mailing address of the provider being identified. This data element may contain the same information as "Provider location address fax number".
Provider First Line Business Practice Location Address: 411 CHICAGO AVE: The first line location address of the provider being identified. For providers with more than one physical location, this is the primary location. This address cannot include a Post Office box.
Provider Business Practice Location Address City Name: OAK PARK: The city name in the location address of the provider being identified.
Provider Business Practice Location Address State Name: IL: The State code in the location of the provider being identified.
Provider Business Practice Location Address Postal Code: 603022233: The postal ZIP or zone code in the location address of the provider being identified. NOTE: ZIP code plus 4-digit extension, if available.
Provider Business Practice Location Address Country Code If outside U S : US: The country code in the location address of the provider being identified.
Provider Business Practice Location Address Telephone Number: 7085241050: The telephone number associated with the location address of the provider being identified.
Provider Business Practice Location Address Fax Number: 7085242469: The fax number associated with the location address of the provider being identified.
Provider Enumeration Date: 2/21/2007: The date the provider was assigned a unique identifier (assigned an NPI).
Last Update Date: 1/27/2025: The date that a record was last updated or changed.
Authorized Official Last Name: EHMANN: The last name of the person authorized to submit the NPI application or to change NPS data for a health care provider.
Authorized Official First Name: MELISSA: The first name of the authorized official.
Authorized Official Title or Position: DIRECTOR OF CHILDREN SERVICES: The title or position of the authorized official.
Authorized Official Telephone Number: 7085241050: The 10-position telephone number of the authorized official.
Healthcare Provider Taxonomy Code 1: 1041C0700X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Healthcare Provider Primary Taxonomy Switch 1: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 2: 222Q00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number State Code 2: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 2: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 3: 225100000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 3: 070002012: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 3: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 3: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 4: 225100000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 4: 070004000: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 4: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 4: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 5: 225100000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 5: 070011242: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 5: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 5: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 6: 225100000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 6: 070008117: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 6: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 6: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 7: 225X00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 7: 056003098: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 7: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 7: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 8: 225X00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 8: 056001573: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 8: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 8: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 9: 235Z00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 9: 146003481: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 9: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 9: Y: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 10: 235Z00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 10: 146005747: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 10: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 10: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 11: 235Z00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 11: 146008122: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 11: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 11: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 12: 235Z00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 12: 146008222: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 12: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 12: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 13: 235Z00000X: This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 13: 146008395: The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 13: IL: The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 13: N: This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Is Organization Subpart: N: Indicates whether the provider is a subpart of a larger organization. This is a single-character code: "Y" means the entity is an organizational subpart, while "N" means it is not. Subparts typically include hospital departments, clinics, or other distinct units that fall under a parent organization.
Healthcare Provider Taxonomy Group 2: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 3: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 4: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 5: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 6: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 7: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 8: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 9: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 10: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 11: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 12: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
Healthcare Provider Taxonomy Group 13: 193200000X MULTI-SPECIALTY GROUP: Specifies whether the provider is part of a single-specialty or multi-specialty business group. The possible values are: 193200000X – Multi-Specialty Group or 193400000X – Single Specialty Group. This field helps distinguish the organizational structure of a provider group.
NPI Certification Date: 1/27/2025: The date on which the National Provider Identifier (NPI) was officially assigned and certified to the provider. This reflects when the provider's NPI record first became active in the NPPES system.

No registry entries match your active lookup criteria.