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MARIELLA BRUNE OSARIEMEN M.D.
NPI 1477915833
Hospitalist in New York, NY

Active since March 24, 2016PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
5141 BROADWAY, NEW YORK, NY 10034(212) 932-5218(212) 932-5258 Get Directions Write a Review

NPPES record last updated: April 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 15, 2026, Apr 9, 2026, Oct 8, 2024 and 2 more (5 updates tracked since 2016).

About Mariella Brune Osariemen M.d. NPPES

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

MARIELLA BRUNE OSARIEMEN M.D. (NPI 1477915833) is an individual hospitalist provider in New York, New York, licensed in Georgia (110150) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of Meharry Medical College School Of Medicine (2016).

NPPES Registry Identity

NPI1477915833
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameMARIELLA BRUNE OSARIEMENCredential: M.D.
Location Address5141 BROADWAYNew York, NY 10034-1159
Mailing Address630 W 168th St # 4New York, NY 10032-3725 · (212) 932-5218 · Fax (212) 932-5258
Phone(212) 932-5218
Fax(212) 932-5258
Sole ProprietorNo
Medical School CMSMeharry Medical College School Of MedicineGraduated 2016
Enumeration DateMarch 24, 2016
Last NPPES UpdateApril 15, 20265 updates tracked since enumeration
NPPES CertifiedApril 15, 2026
✔ NPI 1477915833 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Licenses✔ Licensed in GA · 110150✔ Licensed in NY · 298577
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
5141 BROADWAY, New York, NY 10034
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Other Names 1

Former Name (1)Mariella Ntamatungiro M.d.

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

Mariella Brune Osariemen 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 ID345574794
PECOS Enrollment IDI20190619001120
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.

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
272 services84 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
143 services58 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
17 services17 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

New York-Presbyterian Hospital

Acute Care Hospitals · New York, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330101
Location525 East 68th StreetNew York, NY 10065 · New York County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10034 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.8
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers16 claims16 services$12.92 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers16 claims16 services$59.30 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

AMANDA SARA BROWN RN
Nurse Practitioner (Psychiatric/Mental Health)
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 932-4165
BRITNEY SAMIRA MATTHEWS NP
Nurse Practitioner (Psychiatric/Mental Health)
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 932-4000
RAHUL SHAH M.D.
Hospitalist
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 932-5218
SONIKA KAUR CHOUHAN
Internal Medicine
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 932-4000
DR. DEAN CHOU MD
Neurological Surgery
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 305-7376
MS. KAREN MERYL STUGENSKY RPA-C
Physician Assistant (Medical)
5141 BROADWAY, ALLEN PAVILION
NEW YORK, NY 10034
New York County (212) 932-4125
DEREK MAZIQUE
Internal Medicine
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 932-5218
KRISTEN MICHELE MITCHELL PA
Physician Assistant (Surgical)
5141 BROADWAY
NEW YORK, NY 10034
New York County (212) 932-4171

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 Mariella Osariemen's NPI number?

The NPI number for Mariella Osariemen is 1477915833. It was assigned to this individual provider in the NPPES registry on March 24, 2016. The provider is also known as Mariella Ntamatungiro M.D..

Where is Mariella Osariemen located?

Mariella Osariemen practices at 5141 Broadway, New York, NY 10034. The listed phone number is (212) 932-5218.

What is Mariella Osariemen's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Mariella Osariemen enrolled in Medicare?

Yes. Mariella Osariemen 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.

Is Mariella Osariemen affiliated with any hospitals?

According to CMS data, Mariella Osariemen is affiliated with New York-Presbyterian Hospital.

When was this NPI record last updated?

The NPPES record for Mariella Osariemen was last updated on April 15, 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.