Internal Medicine Doctors in Missouri
Data updated monthly · Last refresh October 2026
2,585 Internal Medicine providers practice in Missouri, including 295 (11%) offering telehealth. The largest concentration is in Saint Louis. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
2,585providers
295telehealth
Saint Louistop city
Internal Medicine by city in Missouri
Choose a city to see providers there.
Where Internal Medicine Doctors in Missouri practice
From CMS Medicare enrollment records covering 1,255 of the 2,585 providers listed here (49%). Providers who do not bill Medicare are not included in these figures.
11%solo or small practice (under 10 clinicians)
16%mid-size group (10 to 99)
74%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Internal Medicine Doctors | All clinicians in group | Main city |
| Mercy Clinic East Communities | 100 | 573 | Saint Louis |
| Aging Well Health Care, LLC | 92 | 236 | Saint Louis |
| St Anthonys Physician Organization Hospitalist Services Lc | 63 | 140 | Saint Louis |
| Mercy Clinic Adult Hospitalists - St. Louis, LLC | 63 | 139 | Saint Louis |
| Physician Groups Lc | 59 | 526 | Saint Louis |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Internal Medicine Doctors affiliated |
| Mercy Hospital St Louis | Saint Louis | Nonprofit | 4 of 5 | 304 |
| Missouri Baptist Medical Center | Saint Louis | Nonprofit | 5 of 5 | 189 |
| Mercy Hospital South | Saint Louis | Nonprofit | 2 of 5 | 185 |
| St Lukes Hospital | Chesterfield | Nonprofit | 4 of 5 | 168 |
| Barnes Jewish Hospital | Saint Louis | Nonprofit | 4 of 5 | 150 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Internal Medicine providers in Missouri
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Chelsea Pearson, MDArnold, MO · $16 in drug and device payments (2025) · Telehealth ·
(314) 948-3491 Dr. Keith Georger, M.D.Arnold, MO · $2,323 in drug and device payments (2025) · Telehealth ·
(636) 282-9899 Dr. Kurmanadha Chadalawada, MD Dr. Binwant Singh, M.D.Ballwin, MO · No drug or device payments recorded (2025) ·
(636) 222-8699 Dr. Christine Sigman, MDBallwin, MO · $129 in drug and device payments (2025) · Telehealth ·
(636) 256-5350 Dr. David Schlitt, M.D.Ballwin, MO · $120 in drug and device payments (2025) ·
(636) 256-5350 Dr. David Schoenwalder, M.D. Dr. James Ketchum, MDBallwin, MO · $1,061 in drug and device payments (2025) · Telehealth ·
(636) 256-5350 Dr. Kathryn Harvey-feldewerth, DOBallwin, MO · $489 in drug and device payments (2025) · Telehealth ·
(636) 256-5181 Dr. Mazin Kamil, MDBallwin, MO · $132 in drug and device payments (2025) ·
(094) 122-2052 Dr. Michael Schoenwalder, D.O. Dr. Sarah Davis, M.D.Ballwin, MO · No drug or device payments recorded (2025) ·
(314) 925-0903 Dr. Indu Patel, MDBarnhart, MO · No drug or device payments recorded (2025) ·
(636) 464-7032 Dr. Sandhya Jagannathan, M.D.Belle, MO · No drug or device payments recorded (2025) ·
(573) 859-3775 Dr. Corbin Stephens, MDBelton, MO · No drug or device payments recorded (2025) ·
(816) 348-1850 Dr. Thomas Hafer, M.D.Belton, MO · No drug or device payments recorded (2025) ·
(816) 348-1200 Dr. Venkata Vamsi Nagineni, MDBelton, MO · No drug or device payments recorded (2025) ·
(816) 348-1850 Dr. Mary Schmidt, M.D.Black Jack, MO · $18 in drug and device payments (2025) ·
(314) 922-4048 Dr. Angela Boston, M.D.Blue Springs, MO · No drug or device payments recorded (2025) ·
(816) 228-5900 Dr. David Voshall, MDBlue Springs, MO · No drug or device payments recorded (2025) ·
(816) 228-9841 Dr. Dean Mundhenke, M.D.Blue Springs, MO · No drug or device payments recorded (2025) ·
(816) 228-9841 Dr. James Paulsgrove, MDBlue Springs, MO · $37 in drug and device payments (2025) ·
(816) 228-5900 Dr. Richard Chung, M.D.Blue Springs, MO · No drug or device payments recorded (2025) ·
(816) 229-9411 Dr. William Sudholt, D.O.Blue Springs, MO · $94 in drug and device payments (2025) ·
(816) 655-5403 Dr. Garrett Alderfer, MDBolivar, MO · No drug or device payments recorded (2025) ·
(417) 328-6000 Dr. Ryan Kedzie, DOBolivar, MO · No drug or device payments recorded (2025) ·
(417) 326-6000 Dr. Amanda Mcalister, MDBranson, MO · No drug or device payments recorded (2025) ·
(417) 337-9808 Dr. Bonnie Kuizinas, MSN, APRN, FNP-CBranson, MO · $358 in drug and device payments (2025) ·
(417) 335-7020 Dr. Brent Murphy, DOBranson, MO · No drug or device payments recorded (2025) ·
(886) 951-8387 Dr. Brian Dieterle, M.D.Branson, MO · $110 in drug and device payments (2025) ·
(417) 334-0810 Dr. Cody Hoeflicker, DOBranson, MO · No drug or device payments recorded (2025) ·
(417) 335-7128 Dr. George Ntui-ayuk, MDBranson, MO · No drug or device payments recorded (2025) ·
(417) 335-7128 Dr. Anjali Kamat, M.D.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 317-0600 Dr. Aruna Chilakala, MDBridgeton, MO · No drug or device payments recorded (2025) ·
(845) 790-2085 Dr. Ashfaq Ullah, MDBridgeton, MO · No drug or device payments recorded (2025) ·
(314) 209-5180 Dr. Asif Bhutto, M.D.Bridgeton, MO · $63 in drug and device payments (2025) ·
(314) 209-5100 Dr. Bruce Baskir, M.D.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 739-1333 Dr. Bruce Berwald, MDBridgeton, MO · $1,112 in drug and device payments (2025) ·
(314) 739-8200 Dr. Chotchai Boonkham, M.D.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 291-3717 Dr. Danial Tahir, M.D.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 344-6000 Dr. Dion Fisher, M.DBridgeton, MO · No drug or device payments recorded (2025) ·
(314) 298-3893 Dr. Donte Mcclary, MDBridgeton, MO · No drug or device payments recorded (2025) ·
(314) 344-6000 Dr. George Andreoff, M.D.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 739-2900 Dr. Gurcharan Singh, M.D.Bridgeton, MO · $22 in drug and device payments (2025) · Telehealth ·
(314) 209-5100 Dr. Imran Hanafi, MDBridgeton, MO · $31 in drug and device payments (2025) ·
(314) 317-0600 Dr. Josey Page, M.D.Bridgeton, MO · No drug or device payments recorded (2025) ·
(314) 209-5100 Dr. Khaled Hassan, MDBridgeton, MO · No drug or device payments recorded (2025) ·
(314) 551-0338 Conditions Internal Medicine providers in Missouri commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Missouri?There are 2,585 Internal Medicine providers with active NPI records practicing in Missouri, according to federal NPPES data refreshed monthly.
Do Internal Medicine providers in Missouri offer telehealth?Yes. 295 of the 2,585 Internal Medicine providers in Missouri (about 11%) report offering telehealth services in CMS data.
Which cities in Missouri have the most Internal Medicine providers?Saint Louis (932), Kansas City (241), Columbia (210) have the highest concentration of Internal Medicine providers in Missouri.
How many Internal Medicine providers in Missouri received drug or device company payments?966 of 2,585 Internal Medicine providers in Missouri (37%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Missouri treat?Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Internal Medicine Doctors in Missouri work in independent practices or large health systems?Among 1,255 Internal Medicine Doctors in Missouri enrolled in Medicare, 11% bill through a solo or small practice with fewer than 10 clinicians, 16% through a mid-size group of 10 to 99, and 74% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Internal Medicine Doctors in Missouri work at?According to CMS facility affiliation records, the Missouri hospitals where the most Internal Medicine Doctors hold privileges are Mercy Hospital St Louis in Saint Louis; Missouri Baptist Medical Center in Saint Louis; Mercy Hospital South in Saint Louis.
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