Gregory V. Maynard, D.O.
Individual provider Active NPI Family Medicine Physician · Saint James, MO
NPI 1063450187 · NPPES record last updated Jun 11, 2026
Key facts
- NPI
- 1063450187
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Family Medicine Physician 207Q00000X
- License
- 113166 (MO)
- Practice address
- 1000 N Jefferson St
Saint James, MO 65559-1078 - Phone
- (573) 265-8840
- Fax
- (573) 202-2474
- NPI assigned
- Jun 2, 2006
- Sex
- Male
- Sole proprietor
- No
Organizations & group practices 13
Hospital & facility affiliations 20
Owned or controlled facilities with NPI records 2
Medicare Care Compare profile
- Specialty
- Family Practice
- Education
- At Still University of Health Sciences, College of Osteo Med, Kirksville, 1997
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Phelps County Regional Medical Center
Mercy Clinic Springfield Communities
Practice addresses (Care Compare)
1000 N Jefferson St
Saint James, MO 65559-1078
Phone (573) 265-8840
107 W Eldon St
MC Family Medicine St James
Saint James, MO 65559-1903
Phone (573) 265-1818
1605 Martin Springs Dr
Rolla, MO 65401-2980
404 W Rolla Rd
MC Family Medicine Salem
Salem, MO 65560-1233
Phone (573) 729-6225
518 Pine St
Steelville, MO 65565-6041
Phone (573) 775-5838
Hospital & facility affiliations
- Centerwell Home Health
- Phelps Health Home Health and Hospice
- Phelps Health Home Health and Hospice
- Mercy Hospital Lebanon
- Phelps County Regional Medical Center
- Salem Memorial District Hospital
- Mercy Hospital Springfield
- Mercy Hospital Washington
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled in MO
- Eligible to order & refer
- Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes
All facility ownership & control disclosures 2
| Facility | Type | Role | Since |
|---|---|---|---|
| Phelps Health Home Health & Hospice |
Home health agency | Other | May 1, 2022 |
| Phelps Health Home Health & Hospice |
Hospice | W-2 Managing Employee | May 1, 2022 |
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20050518000899 | MO | Practitioner - Family Practice | 1254372386 | Reassigns benefits to 2 organizations |
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Osteopathy
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Mercy Clinic Springfield Communities | Family Medicine | Current |
Accepting new patients |
| Mercy Clinic Springfield Communities | Family Medicine | Current |
Accepting new patients |
| Mercy Clinic Springfield Communities | Family Medicine | Current |
Accepting new patients |
| Kerr Healthcare Services LLC | Past |
Accepting new patients | |
| Ozarks Medical Center | Family Medicine | Past | Accepting new patients |
| Texas County Memorial Hospital | Past | Accepting new patients |
Locations
1333 S Sam Houston Blvd
Houston, MO 65483
Phone (417) 967-3311
1000 W 10th St
Rolla, MO 65401
Phone (573) 364-9000
1605 Martin Springs Dr
Ste 330
Rolla, MO 65401
Phone (573) 458-6379
1605 Martin Springs Dr
Rolla, MO 65401
Phone (573) 458-6379
1100 W 10th St
Ste 155
Rolla, MO 65401
Phone (314) 364-2227
107 W Eldon St
Saint James, MO 65559
Phone (573) 265-1818
404 W Rolla Rd
Salem, MO 65560
Phone (573) 729-6225
3801 S National Ave
Springfield, MO 65807
Phone (417) 269-4056
620 S Glenstone Ave
Springfield, MO 65802
Phone (417) 829-4215
2115 S Fremont Ave
Ste 3050
Springfield, MO 65804
Phone (417) 820-3905
518 Pine St
Steelville, MO 65565
Phone (573) 775-5838
Interoperability endpoints
- gmaynard18766@directc.mercy.net
- gmaynard1237@directb.mercy.net
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 113166 | MO | Yes |
Addresses
Primary practice location
1000 N Jefferson St
Saint James, MO 65559-1078
Mailing address
1050 W 10TH St
Rolla, MO 65401-2905
Phone (573) 364-9000
Other practice location 1
404 E Rolla Rd
Salem, MO 65560-1563
Phone (573) 729-6225
Other practice location 2
1000 W 10th St
Rolla, MO 65401-2905
Phone (573) 458-8899
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 431560263 | Other | MO | TRICARE |
| P00313978 | Other | MO | RAILROAD MEDICARE |
| 244666541 | Medicaid | MO |
Other providers in Saint James, MO
- Lester E Cox Medical Centers
- Marie Elizabeth Manion
- Jesus Martinez
- Mary V Hutchison
- Mary V. Hutchison
- Megan McBride
- Beverly McKee
- Debby L. McWhorter
- Mercy Clinic Springfield Communities
- Mercy Hospital Springfield
All providers in Saint James, MO · Family Medicine Physician in Missouri
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Jun 11, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- CMS facility enrollments, All Owners and change-of-ownership files: CCNs, owners and managing parties.
- Provider of Services files (CMS): certification status, beds and related CCNs.
- Order and Referring (CMS).
- Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.