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SYDNEY O'MALLEY M.D.
NPI 1851754626
Allergy & Immunology in Rochester, MN

Active since March 30, 2016PECOS EnrolledAccepts Medicare Assignment
200 1ST ST SW, ROCHESTER, MN 55905(507) 284-2511 Get Directions Write a Review

NPPES record last updated: November 30, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 30, 2025, May 13, 2025, Jul 15, 2024 and 2 more (5 updates tracked since 2016).

About Sydney O'malley M.d. NPPES

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

SYDNEY O'MALLEY M.D. (NPI 1851754626) is an individual allergy & immunology provider in Rochester, Minnesota, licensed in Minnesota (79453) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Pensacola, and is a graduate of Wright State University Boonshoft School Of Medicine (2016).

NPPES Registry Identity

NPI1851754626
Entity TypeIndividualFemale
Primary Taxonomy207K00000X
Provider Legal NameSYDNEY O'MALLEYCredential: M.D.
Location Address200 1ST ST SWRochester, MN 55905-0001
Mailing AddressPo Box 860912Minneapolis, MN 55486-0912 · (507) 284-2511
Phone(507) 284-2511
Sole ProprietorNo
Medical School CMSWright State University Boonshoft School Of MedicineGraduated 2016
Enumeration DateMarch 30, 2016
Last NPPES UpdateNovember 30, 20255 updates tracked since enumeration
NPPES CertifiedNovember 30, 2025
✔ NPI 1851754626 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in MN · 79453
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0101263141 (VA)
200 1ST ST SW, Rochester, MN 55905
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Secondary Practice Location 1

Location 1220 Hovey RdPensacola, FL 32508-1044 · Phone (850) 452-2187

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

Sydney O'malley 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 ID4880112283
PECOS Enrollment IDI20250520000415
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

2

Medicare enrollment records show Sydney O'malley reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayo Clinic
10 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
Mayo Clinic Health System-Southeast Minnesota Region
25 mi
Multi-Specialty
701 HEWITT BLVD
Red Wing, MN 55066
  • Reassigned Medicare billing, Minnesota enrollment
  • 1,571 clinicians in this Medicare group
NPI 1114453883 (651) 267-5000

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

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.

EMILY LEASURE MD
Internal Medicine
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
NATHANAEL BAILEY
Pathology (Clinical Pathology/Laboratory Medicine)
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
NICOLE S NIPPER NP
Nurse Practitioner
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
BRANDI D'SOUZA NP
Nurse Practitioner
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
DR. JODI M. MOORE-WEISS OD
Optometrist
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
JENNIFER L KERKVLIET MA
Psychologist
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
EMMANUEL J LUJERO CRNA
Nurse Anesthetist, Certified Registered
200 1ST ST SW
ROCHESTER, MN 55905
Olmsted County (507) 284-2511
JUAN PABLO BRITO CAMPANA M.D
Internal Medicine (Endocrinology, Diabetes & Metabolism)
200 1ST ST SW
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 Sydney O'malley's NPI number?

The NPI number for Sydney O'malley is 1851754626. It was assigned to this individual provider in the NPPES registry on March 30, 2016.

Where is Sydney O'malley located?

Sydney O'malley practices at 200 1st St SW, Rochester, MN 55905. The listed phone number is (507) 284-2511.

What is Sydney O'malley's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Sydney O'malley enrolled in Medicare?

Yes. Sydney O'malley 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 Sydney O'malley's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sydney O'malley reassigns Medicare benefits to 2 organizations: Mayo Clinic (Rochester, MN) and Mayo Clinic Health System-Southeast Minnesota Region (Red Wing, MN). 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 Sydney O'malley'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 Sydney O'malley was last updated on November 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.