What is Marilou Sinclair's NPI number?

Marilou Sinclair's National Provider Identifier (NPI) is 1578140745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marilou Sinclair's specialty?

Marilou Sinclair is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Marilou Sinclair located?

Marilou Sinclair's practice location on file with NPPES is 2115 S Fremont Ave Ste 2300, Springfield, MO 65804-2233.

What is Marilou Sinclair's phone number?

The practice phone number listed in the NPPES registry for Marilou Sinclair is (417) 820-5600.

Does Marilou Sinclair accept Medicare?

Marilou Sinclair is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Marilou Sinclair's NPI active?

Yes — Marilou Sinclair's NPI (1578140745) is active in the NPPES registry as of the last update on 2025-09-24.

IndividualActiveAccepts Medicare

Marilou Sinclair, MD

NPI 1578140745 · Internal Medicine Physician · Springfield, MO

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Marilou Sinclair, MD is a Internal Medicine Physician provider in Springfield, MO (NPI 1578140745).

Provider details

NPI number: 1578140745
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: Yes
License: 2024033469 (MO)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 2024033469 (MO)
Allopathic & Osteopathic Physicians
Hospitalist Physician208M00000XLicense 2024033469 (MO)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
5 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
4 documented practice locations
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	22	20
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	18	13
Levothyroxine Sodium	13	—
Amlodipine Besylate	12	—
Tramadol Hcl	12	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$125 across 1 record (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Practice location

2115 S Fremont Ave Ste 2300

Springfield, MO 65804-2233

Phone: (417) 820-5600

Fax: (417) 820-5606

Street-level locationGet directions

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Mailing address