DR. MIKHAIL ATTAAR MD
NPI 1083144158
Surgery in Saint Louis, MO
About Dr. Mikhail Attaar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MIKHAIL ATTAAR MD (NPI 1083144158) is an individual surgery provider in Saint Louis, Missouri, licensed in Missouri (2024002449) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, is affiliated with Robert Packer Hospital, and is a graduate of University Of Pittsburgh School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Mikhail Attaar 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.
Medicare Billing Reassignments
2Medicare enrollment records show Mikhail Attaar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 172 clinicians in this Medicare group
Wellsboro, PA 16901
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Guthrie Medical Group PC
- 830 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Robert Packer Hospital
Acute Care Hospitals · Sayre, PAPhysician 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.
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 Mikhail Attaar's NPI number?
The NPI number for Mikhail Attaar is 1083144158. It was assigned to this individual provider in the NPPES registry on June 12, 2017.
Where is Mikhail Attaar located?
Mikhail Attaar practices at 1 Barnes Jewish Hospital Plz Div Surg Mis, Saint Louis, MO 63110. The listed phone number is (314) 454-8877.
What is Mikhail Attaar's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Mikhail Attaar enrolled in Medicare?
Yes. Mikhail Attaar 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.
Which organizations bill Medicare for Mikhail Attaar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mikhail Attaar reassigns Medicare benefits to 2 organizations: Washington University (Saint Louis, MO) and Guthrie Medical Group, P.C. (Wellsboro, PA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mikhail Attaar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mikhail Attaar affiliated with any hospitals?
According to CMS data, Mikhail Attaar is affiliated with Robert Packer Hospital.
When was this NPI record last updated?
The NPPES record for Mikhail Attaar was last updated on April 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.
# Dr. Mikhail Attaar, MD · NPI 1083144158
Surgery physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 12, 2017.
## Identity
- **NPI:** 1083144158 (Entity type: Individual)
- **Enumerated:** June 12, 2017
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 2024002449 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, DIV SURG MIS, Saint Louis, MO 63110-1003
- **Phone:** (314) 454-8877 · **Fax:** (877) 991-4780
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Washington University (NPI 1134169568, Saint Louis, MO); Guthrie Medical Group, P.C. (NPI 1952350167, Wellsboro, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** April 15, 2025
- **Other identifiers:** Medicaid 200140763 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1083144158) · Data from the CMS NPPES public registry.