DR. MARIO KARAM SHAMMAS MD, PHD
NPI 1366230799
Psychiatry & Neurology - Neurology in Rochester, MN

Q: What is Mario Shammas's NPI number?

The NPI number for Mario Shammas is 1366230799. It was assigned to this individual provider in the NPPES registry on April 26, 2025.

Q: What is Mario Shammas's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for Mario Shammas was last updated on July 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since April 26, 2025PECOS Enrolled

200 1ST ST. S.W., ROCHESTER, MN 55905(507) 284-2511 Get Directions Write a Review

NPPES record last updated: July 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 22, 2026, Aug 4, 2025 (2 updates tracked since 2025).

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About Dr. Mario Karam Shammas Md, Phd NPPES

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

DR. MARIO KARAM SHAMMAS MD, PHD (NPI 1366230799) is an individual neurology provider in Rochester, Minnesota, licensed in Minnesota (83076) and active in the NPI registry since April 2025. He is enrolled in Medicare PECOS and is a graduate of University Of Chicago, Pritzker School Of Medicine (2025).

NPPES Registry Identity

NPI1366230799

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameDR. MARIO KARAM SHAMMASCredential: MD, PHD

Location Address200 1ST ST. S.W.Rochester, MN 55905-0001

Mailing AddressPo Box 860912Minneapolis, MN 55486-0912 · (507) 284-2511

Phone(507) 284-2511

Sole ProprietorNo

Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 2025

Enumeration DateApril 26, 2025

Last NPPES UpdateJuly 22, 20262 updates tracked since enumeration

NPPES CertifiedJuly 22, 2026

✔ NPI 1366230799 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in MN · 83076

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

Also ListedInternal MedicineTaxonomy 207R00000X · License 35341 (MN)

200 1ST ST. S.W., Rochester, MN 55905

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mario Karam Shammas Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2567961014

PECOS Enrollment IDI20260811001262

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 Reassignment

Medicare enrollment records show Mario Shammas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mayo Clinic

0.4 mi

Infectious Disease

200 1ST ST SW
Rochester, MN 55905

Reassigned Medicare billing, Minnesota enrollment
6,534 clinicians in this Medicare group

NPI 1114343860 (507) 284-2511

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55905 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

$127.61 typical visit price

range $56.00 – $168.28

Typical copayment $31.90 (range $14.00 – $42.07)

Most-billed visit code 99204

Established Patient

$98.61 typical visit price

range $18.32 – $138.04

Typical copayment $24.65 (range $4.58 – $34.51)

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 4

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

CHRISTIAN ANDRE SANGIO MD

Physical Medicine & Rehabilitation

200 1ST ST. S.W.
ROCHESTER, MN 55905

Olmsted County (507) 284-2511

INGRID MARIA CURRAN PHARMD

Pharmacist

200 1ST ST. S.W.
ROCHESTER, MN 55905

Olmsted County (507) 284-2511

DANIEL JOHN KROLL DPT

Physical Therapist

200 1ST ST. S.W.
ROCHESTER, MN 55905

Olmsted County (507) 284-2511

MCKAYLA MARY VLIEM MD

Pediatrics

200 1ST ST. S.W.
ROCHESTER, MN 55905

Olmsted County (507) 284-2511

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 Mario Shammas's NPI number?

The NPI number for Mario Shammas is 1366230799. It was assigned to this individual provider in the NPPES registry on April 26, 2025.

Where is Mario Shammas located?

Mario Shammas practices at 200 1st St. S.W., Rochester, MN 55905. The listed phone number is (507) 284-2511.

What is Mario Shammas's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Mario Shammas enrolled in Medicare?

Yes. Mario Shammas is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mario Shammas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mario Shammas reassigns Medicare benefits to Mayo Clinic (Rochester, MN). The 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 Mario Shammas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mario Shammas was last updated on July 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.