Dr. Marilou Padillos Sinclair , MD
Internal Medicine β’ Springfield, MO
2115 S Fremont Ave Ste 2300
Springfield, MO 658042233
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Marilou Sinclair is listed in NPPES under Internal Medicine.
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NPI assigned on March 25, 2021; this date does not establish years in practice.
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Published CMS data list 77 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium β 22 prescription fills, including refills.
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) β 18 prescription fills, including refills.
- Levothyroxine Sodium β 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 75% of clinicians listed under Internal Medicine in Springfield, MO (2024, 98 clinicians with data). Median for this group: 296. Middle half: 81 to 9,066.
Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in Missouri (2024, 1,528 clinicians with data). Median for this group: 770. Middle half: 122 to 7,867.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 39 in 2022 to 77 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022β2024.
Practice Location & Contact Primary Location
2115 S Fremont Ave Ste 2300
Springfield, MO 658042233
NPPES lists 3 distinct additional practice-address records in Joplin, MO; Springfield, MO. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 3 distinct group names: Elite Professional Providers, Llc; Freeman-Oak Hill Health System; Mercy Clinic Springfield Communities. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2017
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
153 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$608 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $385.61 across 3 records.
By nature of payment
- Food and Beverage: $385.61 across 3 records.
Reporting-company totals
- HOLOGIC INC: $138.54 across 1 record.
- Axsome Therapeutics, Inc.: $124.90 across 1 record.
- Otsuka America Pharmaceutical, Inc.: $122.17 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
9 years (graduated 2017)
CMS Doctors and Clinicians data list 2017 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2021
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Sinclair has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Sinclair as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Springfield and Missouri
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 75% of clinicians listed under Internal Medicine in Springfield, MO (2024, 98 clinicians with data). Median for this group: 296. Middle half: 81 to 9,066.
Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in Missouri (2024, 1,528 clinicians with data). Median for this group: 770. Middle half: 122 to 7,867.
Part D drug cost
A lower Part D drug cost than 80% of clinicians listed under Internal Medicine in Springfield, MO (2024, 98 clinicians with data). Median for this group: $23,529. Middle half: $1,352 to $798,839.
A lower Part D drug cost than 80% of clinicians listed under Internal Medicine in Missouri (2024, 1,528 clinicians with data). Median for this group: $59,831. Middle half: $2,284 to $576,450.
137 active clinicians are listed under Internal Medicine with a practice address in Springfield, MO (2,588 in Missouri).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Springfield
13.1% of these 137 clinicians have the CMS telehealth indicator.
68.6% of these 137 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 97% from 39 in 2022 to 77 in 2024.
- 2022: 39
- 2023: 45
- 2024: 77
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30-day fills
30-day fills increased 116% from 71 in 2022 to 153 in 2024.
- 2022: 71
- 2023: 87
- 2024: 153
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Part D drug cost
Part D drug cost decreased 42% from $1,044 in 2022 to $608 in 2024.
- 2022: $1,044
- 2023: $927
- 2024: $608
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $125.00 in 2024 to $385.61 in 2025.
- 2024: $125.00
- 2025: $385.61
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $385.61.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| HOLOGIC INC |
Food and Beverage
In-kind items and services
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APTIMA | General | $138.54 |
| Axsome Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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Auvelity | General | $124.90 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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REXULTI | General | $122.17 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 22 | 1,880 | $164.02 | 20 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 18 | 347 | $223.97 | 13 |
| Levothyroxine Sodium | Levothyroxine Sodium | 13 | 789 | $112.09 | β |
| Tramadol Hcl | Tramadol Hcl | 12 | 299 | $42.68 | 11 |
| Amlodipine Besylate | Amlodipine Besylate | 12 | 990 | $65.71 | β |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-09-24NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 208M00000X
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20240927002183
MO
5890226179
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Elite Professional Providers, Llc
3322 S Campbell Ave, Springfield, MO 658074980
Phone: 4172204480
Mercy Clinic Springfield Communities
2115 S Fremont Ave, Springfield, MO 658042233
Phone: 4178415600
Freeman-Oak Hill Health System
1102 W 32 St, Joplin, MO 648043503
Phone: 4173474570
Secondary Practice Locations
1102 W 32nd St
Joplin, MO 648043503
Phone: 4173474570
1655 S Enterprise Ave Ste A3
Springfield, MO 658041864
Phone: 4172204480
3322 S Campbell Ave Ste T-1
Springfield, MO 658074980
Phone: 4172204480
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Additional practice office at 1102 W 32nd St, Joplin, MO 648043503
Additional practice office at 3322 S Campbell Ave Ste T-1, Springfield, MO 658074980
Additional practice office at 1655 S Enterprise Ave Ste A3, Springfield, MO 658041864
Internal Medicine (license number reported to NPPES: MO 2024033469)
Hospitalist (license number reported to NPPES: MO 2024033469)
Registered at 2115 S FREMONT AVE STE 2300, SPRINGFIELD, MO 658042233 (Tel: 4178205600)
Registered at 2115 S FREMONT AVE STE 2300, SPRINGFIELD, MO 658042233 (Tel: 4178205600)
Internal Medicine (license number reported to NPPES: MO 2024033469)
NPI status registered as active in NPPES database
Registered at 16 GUION PL, NEW ROCHELLE, NY 108015502 (Tel: 9143653680)
Registered at 16 GUION PL, NEW ROCHELLE, NY 108015502 (Tel: 9143653680)
Recorded as MARILOU SINCLAIR, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Springfield
- Dr. Muhammad Khalid Abbas, MD
- Dr. Taksh Patel, MD
- Dr. Frederick Lobati, MD
- Dr. Robert Scott, MD
- Dr. Aprilee Sta Lucia, MD
- Dr. James Rogers, MD
Mailing Address
2115 S Fremont Ave Ste 2300
Springfield, MO 658042233
Phone: 4178205600