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ROSALIA MARY MAHR M.D.
NPI 1871028704
Emergency Medicine in Columbus, OH

Active since April 28, 2017PECOS EnrolledAccepts Medicare Assignment
95.31/100
CMS Quality Rating
410 W 10TH AVE, COLUMBUS, OH 43210(614) 293-8000(614) 293-3124 Get Directions Write a Review

NPPES record last updated: April 2, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 2, 2024, Aug 15, 2022, May 11, 2022 and 4 more (7 updates tracked since 2017).

About Rosalia Mary Mahr M.d. NPPES

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

ROSALIA MARY MAHR M.D. (NPI 1871028704) is an individual emergency medicine provider in Columbus, Ohio, licensed in Ohio (35.140055) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS, is affiliated with Ohio State University State Health System, and maintains 9 additional practice locations.

NPPES Registry Identity

NPI1871028704
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameROSALIA MARY MAHRCredential: M.D.
Location Address410 W 10TH AVEColumbus, OH 43210-1240
Mailing Address410 W 10th AveColumbus, OH 43210-1240 · (614) 293-8305
Phone(614) 293-8000
Fax(614) 293-3124
Sole ProprietorNo
Medical School CMSMedical College Of WisconsinGraduated 2017
Enumeration DateApril 28, 2017
Last NPPES UpdateApril 2, 20247 updates tracked since enumeration
NPPES CertifiedApril 2, 2024
✔ NPI 1871028704 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in OH · 35.140055✔ Licensed in WI · 70619-20
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedPediatrics · Pediatric Emergency MedicineTaxonomy 2080P0204X · License 35.140055 (OH)
410 W 10TH AVE, Columbus, OH 43210
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Other Names 1

Former Name (1)Rosalia Mary Holzman Md

Secondary Practice Locations 9

Location 1433 N Cleveland AveWesterville, OH 43082-8095 · Phone (614) 355-8300
Location 2100 Colemans XingMarysville, OH 43040-7080 · Phone (937) 578-7600
Location 3444 Butterfly Gardens DrColumbus, OH 43215-3427 · Phone (614) 722-2000
Location 44363 All Seasons Dr Ste 100Hilliard, OH 43026-2050 · Phone (614) 355-5900
Location 57853 Pacer DrDelaware, OH 43015-7571 · Phone (614) 355-7900
Location 67901 Diley Rd Ste 150Canal Winchester, OH 43110-9613 · Phone (614) 355-9050
Location 77450 Hospital Dr Ste 100Dublin, OH 43016-8364 · Phone (614) 355-7000
Location 86435 E Broad StColumbus, OH 43213-1507 · Phone (614) 355-8100
Location 9700 Childrens DrColumbus, OH 43205-2639 · Phone (614) 722-2000

Other Identifiers 1

Medicaid0415963OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.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

Rosalia Mary Mahr 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 ID4880966803
PECOS Enrollment IDI20210806002769
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

4

Medicare enrollment records show Rosalia Mahr reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Osu Observation Medicine, LLC
Same address
Anesthesiology
410 W 10TH AVE
Columbus, OH 43210
  • Reassigned Medicare billing, Ohio enrollment
  • 551 clinicians in this Medicare group
NPI 1407095052 (614) 293-8487
Osu Emergency Medicine LLC
Same address
Emergency Medical Services
410 W 10TH AVE
Columbus, OH 43210
  • Reassigned Medicare billing, Ohio enrollment
  • 169 clinicians in this Medicare group
NPI 1699705681 (614) 293-8305
Nationwide Children's Hospital
3.6 mi
Multi-Specialty
700 CHILDRENS DR
Columbus, OH 43205
  • Reassigned Medicare billing, Ohio enrollment
  • 976 clinicians in this Medicare group
NPI 1851179873 (614) 722-2055
Pediatric Academic Association, Inc.
3.6 mi
Pediatrics
700 CHILDRENS DR
Columbus, OH 43205
  • Reassigned Medicare billing, Ohio enrollment
  • 1,246 clinicians in this Medicare group
NPI 1063419943 (614) 722-4579

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 11

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
100 services97 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
45 services44 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
38 services38 patients
Blood test, comprehensive group of blood chemicals 80053
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
30 services30 patients
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025
A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
29 services29 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
28 services28 patients

Hospital Affiliations CMS Care Compare

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

Ohio State University State Health System

Acute Care Hospitals · Columbus, OH
4/5 CMS rating
OwnershipGovernment - State
CMS Certification Number360085
Location410 West 10th AvenueColumbus, OH 43210 · Franklin County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43210 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
$84.72 typical visit price
range $54.34 – $166.65
Typical copayment $21.18 (range $13.58 – $41.66)
Most-billed visit code 99203
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

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.

95.31/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality76.58
Promoting Interoperability100
Improvement Activities40

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.

LARA L. VANHUYSEN C.R.N.A.
Nurse Anesthetist, Certified Registered
410 W 10TH AVE
COLUMBUS, OH 43210
Franklin County (614) 293-8487
LAUREN TALANDA-FATH SOUTHERLAND M.D.
Emergency Medicine
410 W 10TH AVE, EMERGENCY DEPARTMENT
COLUMBUS, OH 43210
Franklin County (614) 293-8305
RAFAL KOPANCZYK DO
Anesthesiology
410 W 10TH AVE
COLUMBUS, OH 43210
Franklin County (614) 293-8487
RACHEL MARIE ASHWORTH CRNA
Nurse Anesthetist, Certified Registered
410 W 10TH AVE
COLUMBUS, OH 43210
Franklin County (614) 293-8487
ADAM T. RAMEY MD
Hospitalist
410 W 10TH AVE
COLUMBUS, OH 43210
Franklin County (614) 293-7499
DR. AMY ELIZABETH SCHULTZ PHARM.D.
Pharmacist
410 W 10TH AVE, 368 DOAN HALL
COLUMBUS, OH 43210
Franklin County (614) 366-6754
MAYA HARARY MD
Neurological Surgery
410 W 10TH AVE
COLUMBUS, OH 43210
Franklin County (614) 293-8714
NICOLE L HESS APRN-CNP
Nurse Practitioner
410 W 10TH AVE
COLUMBUS, OH 43210
Franklin County (614) 293-9600

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 Rosalia Mahr's NPI number?

The NPI number for Rosalia Mahr is 1871028704. It was assigned to this individual provider in the NPPES registry on April 28, 2017. The provider is also known as Rosalia Mary Holzman MD.

Where is Rosalia Mahr located?

Rosalia Mahr practices at 410 W 10th Ave, Columbus, OH 43210. The listed phone number is (614) 293-8000.

What is Rosalia Mahr's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Rosalia Mahr enrolled in Medicare?

Yes. Rosalia Mahr 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 Rosalia Mahr's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rosalia Mahr reassigns Medicare benefits to 4 organizations: Osu Observation Medicine, LLC (Columbus, OH), Osu Emergency Medicine LLC (Columbus, OH), Nationwide Children's Hospital (Columbus, OH) and Pediatric Academic Association, Inc. (Columbus, OH). 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 Rosalia Mahr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rosalia Mahr accept?

Health plans from CareSource list Rosalia Mahr 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.

Is Rosalia Mahr affiliated with any hospitals?

According to CMS data, Rosalia Mahr is affiliated with Ohio State University State Health System.

When was this NPI record last updated?

The NPPES record for Rosalia Mahr was last updated on April 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.