Active NPI
Mark S Lingenfelter, MD
- Pulmonary Disease Physician
- Madison, WI
National Provider Identifier
1063461606
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pulmonary Disease Physician
- License
- 21911
- Practice address
- 306 W Main St Apt 909
Madison, WI 53703 - Phone
- (608) 467-7307
- NPI assigned
- May 10, 2006
- Reactivated
- Oct 23, 2009
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pulmonary Disease Physician | 207RP1001X | 21911 | WI | Primary |
| Critical Care Medicine (Internal Medicine) Physician | 207RC0200X | 21911 | WI |
Addresses
Primary practice location
306 W Main St Apt 909
Madison, WI 53703
Mailing address
306 W Main St Apt 909
Madison, WI 53703-3356
Other identifiers 4
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 8CE373 | Other | TX | BCBS |
| 110046890 | Other | ME | RAILROAD MEDICARE |
| 000560 | Other | ME | BLUE CROSS |
| 332530099 | Medicaid | ME |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 21911 | WI | MD | Critical Care Medicine (Internal Medicine) Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147219200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1776297600000",
"number": "1063461606",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "306 W MAIN ST APT 909",
"city": "MADISON",
"state": "WI",
"postal_code": "537033356"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "306 W MAIN ST APT 909",
"city": "MADISON",
"state": "WI",
"postal_code": "53703",
"telephone_number": "608-467-7307"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LINGENFELTER",
"first_name": "MARK",
"middle_name": "S",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-05-10",
"last_updated": "2026-04-16",
"certification_date": "2026-04-16",
"deactivation_date": "2007-07-13",
"reactivation_date": "2009-10-23",
"status": "A"
},
"taxonomies": [
{
"code": "207RP1001X",
"taxonomy_group": "",
"desc": "Internal Medicine, Pulmonary Disease",
"state": "WI",
"license": "21911",
"primary": true
},
{
"code": "207RC0200X",
"taxonomy_group": "",
"desc": "Internal Medicine, Critical Care Medicine",
"state": "WI",
"license": "21911",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BCBS",
"identifier": "8CE373",
"state": "TX"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "RAILROAD MEDICARE",
"identifier": "110046890",
"state": "ME"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BLUE CROSS",
"identifier": "000560",
"state": "ME"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "332530099",
"state": "ME"
}
],
"endpoints": [],
"other_names": []
}Other providers in Madison, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.