Active NPI
Douglas J Marlow, MD
- Internal Medicine Physician
- Knoxville, TN
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- MD35847
- Practice address
- 6600 Nightingale LN
Knoxville, TN 37909-2754 - Phone
- (865) 632-5885
- Fax
- (865) 374-2164
- NPI assigned
- Oct 17, 2005
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | MD35847 | TN | Primary |
Addresses
Primary practice location
6600 Nightingale LN
Knoxville, TN 37909-2754
Mailing address
6600 Nightingale LN
Knoxville, TN 37909-2754
Phone (865) 632-5885
Other practice location 1
7625 Chapman Hwy Ste 103
Knoxville, TN 37920-2353
Phone (865) 632-5893
Other identifiers 3
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3867894 | Medicaid | TN | |
| 4119661 | Other | TN | BLUE CROSS |
| TN0109 | Other | TN | JOHNDEERE |
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | marlow.douglas@covenanthealth.cernerdirect.com |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in TN
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Internal Medicine
- Education
- University of Toledo College of Medicine, 1994
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1300 Old Weisgarber Rd
Knoxville, TN 37909-1291
Phone (865) 584-2146
Hospital & facility affiliations
- University of TN Medical Center Home Care Services
- Parkwest Medical Center
- Fort Sanders Regional Medical Center
- Leconte Medical Center
- Methodist Medical Center of Oak Ridge
- Physicians Regional Medical Center
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Removal of skin lesions | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD35847 | TN | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Covenant Medical Group, Inc | Current | Accepting new patients | |
| Covenant Medical Group, Inc. | Internal Medicine | Current | Accepting new patients |
| Caromont Medical Group Inc | Internal Medicine | Past | Accepting new patients |
Locations
6600 Nightingale Ln
Knoxville, TN 37909
Phone (865) 632-5885
1300 Old Weisgarber Rd
Knoxville, TN 37909
Phone (865) 584-2146
7625 Chapman Hwy
Ste 103
Knoxville, TN 37920
Phone (865) 331-1122
Dept 888179
Knoxville, TN 37995
7564 Mountain Grove Dr
Knoxville, TN 37920
Phone (865) 632-5885
111 Clyde St
Loudon, TN 37774
Phone (865) 458-1554
Interoperability endpoints
- marlow.douglas@covenanthealth.cernerdirect.com
Organizations & group practices 3
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Family Medicine Physician
- Knoxville, TN
- NPI 1457302010
Internal Medicine
-
- Durable Medical Equipment & Medical Supplies
- Knoxville, TN
- NPI 1871269415
Hospital & facility affiliations 6
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Knoxville, TN
- NPI 1942294814
-
- General Acute Care Hospital
- Sevierville, TN
- NPI 1528052578
-
- General Acute Care Hospital
- Oak Ridge, TN
- NPI 1700870672
-
- General Acute Care Hospital
- Powell, TN
- NPI 1043292899
-
- General Acute Care Hospital
- Knoxville, TN
- NPI 1396739165
-
- Home Health Agency
- Knoxville, TN
- NPI 1346460953
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1129507200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1755648000000",
"number": "1659360295",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "6600 NIGHTINGALE LN",
"city": "KNOXVILLE",
"state": "TN",
"postal_code": "379092754",
"telephone_number": "865-632-5885",
"fax_number": "865-374-2164"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "6600 NIGHTINGALE LN",
"city": "KNOXVILLE",
"state": "TN",
"postal_code": "379092754",
"telephone_number": "865-632-5885",
"fax_number": "865-374-2164"
}
],
"practiceLocations": [
{
"address_1": "7625 Chapman Hwy Ste 103",
"address_purpose": "LOCATION",
"city": "Knoxville",
"state": "TN",
"postal_code": "379202353",
"country_code": "US",
"telephone_number": "865-632-5893",
"fax_number": "865-374-2164",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MARLOW",
"first_name": "DOUGLAS",
"middle_name": "J",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-17",
"last_updated": "2025-08-20",
"certification_date": "2025-08-20",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "TN",
"license": "MD35847",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "3867894",
"state": "TN"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BLUE CROSS",
"identifier": "4119661",
"state": "TN"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "JOHNDEERE",
"identifier": "TN0109",
"state": "TN"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "marlow.douglas@covenanthealth.cernerdirect.com",
"affiliation": "N",
"address_1": "6600 Nightingale Ln",
"city": "Knoxville",
"state": "TN",
"country_code": "US",
"postal_code": "379092754",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Knoxville, TN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.