MICHAEL ZIMMERMAN ROOT MD
NPI 1609370071
Internal Medicine - Critical Care Medicine in Saint Louis, MO
About Michael Zimmerman Root Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL ZIMMERMAN ROOT MD (NPI 1609370071) is an individual critical care medicine provider in Saint Louis, Missouri, licensed in Missouri (2026016042) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, maintains a secondary practice location in Aurora, and is a graduate of New York University School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Michael Zimmerman Root Md 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.
Areas of Expertise CMS Part B claims 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Root's NPI number?
The NPI number for Michael Root is 1609370071. It was assigned to this individual provider in the NPPES registry on March 21, 2018.
Where is Michael Root located?
Michael Root practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. The listed phone number is (314) 454-8917.
What is Michael Root's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Michael Root enrolled in Medicare?
Yes. Michael Root is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Michael Root accept?
Health plans from Medica and UnitedHealthcare list Michael Root as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Michael Root was last updated on September 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days 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.
# Michael Zimmerman Root, MD · NPI 1609370071
Critical Care Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 21, 2018.
## Identity
- **NPI:** 1609370071 (Entity type: Individual)
- **Enumerated:** March 21, 2018
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 2026016042 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO 63110-1003
- **Phone:** (314) 454-8917
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** New York University School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** September 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1609370071) · Data from the CMS NPPES public registry.