STEPHEN HOLTSFORD M.D.
Complete NPI Record 1801979463
Preventive Medicine - Addiction Medicine in Saint Charles, IL

Active since October 24, 2006PECOS EnrolledAccepts Medicare Assignment
210 S 5TH ST STE 10, SAINT CHARLES, IL 60174(630) 940-2468 Get Directions

NPPES record last updated: February 23, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Complete NPI Dataset

This page contains the complete raw NPPES record for Stephen Holtsford, M.D. (NPI 1801979463), an individual preventive medicine provider in Saint Charles, IL. All 38 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, Markdown 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.

Registry File Document Utilities
NPI: 1801979463
Field 1/38
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: 1
Field 2/38
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).
Provider Last Name Legal Name: HOLTSFORD
Field 3/38
The last name of the provider. If the provider is an individual, this is the legal name.
Provider First Name: STEPHEN
Field 4/38
The first name of the provider, if the provider is an individual.
Provider Credential Text: M.D.
Field 5/38
The abbreviations for professional degrees or credentials used or held by the provider, if the provider is an individual. Examples are MD, DDS, CSW, CNA, AA, NP, RNA, or PSY. These credential designations will not be verified by NPS.
Provider First Line Business Mailing Address: PO BOX 9030
Field 6/38
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: WHEELING
Field 7/38
The city name in the mailing address of the provider being identified.
Provider Business Mailing Address State Name: IL
Field 8/38
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: 600909030
Field 9/38
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
Field 10/38
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: 8474951617
Field 11/38
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: 8475374866
Field 12/38
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: 210 S 5TH ST STE 10
Field 13/38
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: SAINT CHARLES
Field 14/38
The city name in the location address of the provider being identified.
Provider Business Practice Location Address State Name: IL
Field 15/38
The State code in the location of the provider being identified.
Provider Business Practice Location Address Postal Code: 601742700
Field 16/38
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
Field 17/38
The country code in the location address of the provider being identified.
Provider Business Practice Location Address Telephone Number: 6309402468
Field 18/38
The telephone number associated with the location address of the provider being identified.
Provider Gender Code: M
Field 21/38
The code designating the provider's gender if the provider is a person.
Healthcare Provider Taxonomy Code 1: 2083A0300X
Field 22/38
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 1: 036091535
Field 23/38
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 1: IL
Field 24/38
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 1: Y
Field 25/38
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.
Other Provider Identifier 1: 451530938
Field 26/38
An additional identifier number for the provider, either current or previously used. This may include IDs issued by health plans, state agencies, or other organizations. The value is collected from the NPI application or update form.
Other Provider Identifier Type Code 1: 01
Field 27/38
A code that specifies the type of additional identifier associated with the provider, either current or past. Examples include UPIN (Universal Provider Identification Number), NSC (National Supplier Clearinghouse), OSCAR (CMS Certification Number), DEA (Drug Enforcement Administration number), state Medicaid ID, or a plan-specific PIN. The value is collected from the NPI application or update form.
Other Provider Identifier State 1: IL
Field 28/38
The two-letter state code representing the U.S. state or territory that issued the additional provider identifier. This links the Other Provider Identifier to the state where it is valid or was assigned.
Other Provider Identifier Issuer 1: BLUE SHIELD
Field 29/38
The name of the organization, agency, or health plan that assigned the additional provider identifier. This identifies who issued the number linked to Other Provider Identifier 1 (for example, a state Medicaid agency, Medicare, or a private insurance company).
Other Provider Identifier 2: 930061957
Field 30/38
An additional identifier number for the provider, either current or previously used. This may include IDs issued by health plans, state agencies, or other organizations. The value is collected from the NPI application or update form.
Other Provider Identifier Type Code 2: 01
Field 31/38
A code that specifies the type of additional identifier associated with the provider, either current or past. Examples include UPIN (Universal Provider Identification Number), NSC (National Supplier Clearinghouse), OSCAR (CMS Certification Number), DEA (Drug Enforcement Administration number), state Medicaid ID, or a plan-specific PIN. The value is collected from the NPI application or update form.
Other Provider Identifier State 2: IL
Field 32/38
The two-letter state code representing the U.S. state or territory that issued the additional provider identifier. This links the Other Provider Identifier to the state where it is valid or was assigned.
Other Provider Identifier Issuer 2: RAILROAD MEDICARE
Field 33/38
The name of the organization, agency, or health plan that assigned the additional provider identifier. This identifies who issued the number linked to Other Provider Identifier 1 (for example, a state Medicaid agency, Medicare, or a private insurance company).
Other Provider Identifier 3: 036091535 5
Field 34/38
An additional identifier number for the provider, either current or previously used. This may include IDs issued by health plans, state agencies, or other organizations. The value is collected from the NPI application or update form.
Other Provider Identifier Type Code 3: 05
Field 35/38
A code that specifies the type of additional identifier associated with the provider, either current or past. Examples include UPIN (Universal Provider Identification Number), NSC (National Supplier Clearinghouse), OSCAR (CMS Certification Number), DEA (Drug Enforcement Administration number), state Medicaid ID, or a plan-specific PIN. The value is collected from the NPI application or update form.
Other Provider Identifier State 3: IL
Field 36/38
The two-letter state code representing the U.S. state or territory that issued the additional provider identifier. This links the Other Provider Identifier to the state where it is valid or was assigned.
Is Sole Proprietor: N
Field 37/38
Indicates whether the provider is registered as a sole proprietor. This is a single-character code: "Y" means the provider operates as a sole proprietor, and "N" means they do not.

Secondary Practice Locations 1

The first line of the secondary practice location address of the provider being identified. For providers with more than one physical location, this is a secondary practice location address. This address cannot include a Post Office box.

300 Randall Rd, Emergency Dept
Location 1/1
Geneva, IL 60134-4200 · Phone (630) 208-4009 · Fax (630) 208-0942

Other Provider Identifiers 3

Legacy and payer-issued identifiers reported to the NPPES registry for this provider.

451530938 Other
Identifier 1/3
State: IL · Issuer: Blue Shield
Other: An additional provider identifier that does not correspond to any of the other defined identifier type categories.
930061957 Other
Identifier 2/3
State: IL · Issuer: Railroad Medicare
Other: An additional provider identifier that does not correspond to any of the other defined identifier type categories.
036091535 5 Medicaid
Identifier 3/3
State: IL
Medicaid (State-specific): A provider identification number assigned by an individual state's Medicaid program, used for billing and enrollment within that state's Medicaid system.
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