DR. SENTHIL ARUCHAMY M.D
NPI 1386873883
Internal Medicine - Critical Care Medicine in Saint Louis, MO

Q: What is Senthil Aruchamy's NPI number?

The NPI number for Senthil Aruchamy is 1386873883. It was assigned to this individual provider in the NPPES registry on July 7, 2009.

Q: What is Senthil Aruchamy's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Q: When was this NPI record last updated?

The NPPES record for Senthil Aruchamy was last updated on September 12, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 07, 2009PECOS EnrolledAccepts Medicare Assignment

625 S NEW BALLAS RD STE 7020, SAINT LOUIS, MO 63141(314) 251-1448 Get Directions Write a Review

NPPES record last updated: September 12, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 12, 2022, Jul 28, 2020, Jun 19, 2018 and 1 more (4 updates tracked since 2017).

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About Dr. Senthil Aruchamy M.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SENTHIL ARUCHAMY M.D (NPI 1386873883) is an individual critical care medicine provider in Saint Louis, Missouri, licensed in Missouri (2018009222) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (2006).

NPPES Registry Identity

NPI1386873883

Entity TypeIndividualMale

Primary Taxonomy207RC0200X

Provider Legal NameDR. SENTHIL ARUCHAMYCredential: M.D

Location Address625 S NEW BALLAS RD STE 7020Saint Louis, MO 63141-8218

Mailing Address625 S New Ballas RoadSt. Louis, MO 63141 · (314) 251-6486 · Fax (314) 251-4155

Phone(314) 251-1448

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateJuly 7, 2009

Last NPPES UpdateSeptember 12, 20224 updates tracked since enumeration

NPPES CertifiedSeptember 12, 2022

✔ NPI 1386873883 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RC0200X

Licenses✔ Licensed in MO · 2018009222✔ Licensed in AR · E13309

Definition

An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Also ListedInternal MedicineTaxonomy 207R00000X · License E13309 (AR), 2018009222 (MO)

Also ListedHospitalistTaxonomy 208M00000X · License 266305 (NY)

625 S NEW BALLAS RD STE 7020, Saint Louis, MO 63141

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Senthil Aruchamy M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5496903254

PECOS Enrollment IDI20200825003576

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Senthil Aruchamy reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Clinic Adult Critical Care, LLC

Same address

Critical Care Medicine

621 S NEW BALLAS RD, SUITE 4006-B
Saint Louis, MO 63141

Reassigned Medicare billing, Missouri enrollment
77 clinicians in this Medicare group

NPI 1730119421 (314) 251-6486

Mercy Aco Clinical Services Inc

6.2 mi

Neurology

15740 S OUTER 40 RD
Chesterfield, MO 63017

Reassigned Medicare billing, Missouri enrollment
263 clinicians in this Medicare group

NPI 1063965093 (636) 237-4200

Mercy Health Northwest Arkansas Communities

257 mi

Multi-Specialty

1 MERCY WAY
Bella Vista, AR 72714

Reassigned Medicare billing, Arkansas enrollment
472 clinicians in this Medicare group

NPI 1396173514 (479) 802-5555

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

238 services104 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

43 services36 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

36 services32 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260020

Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63141 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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