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CHRISTINA O'BRIEN MD
NPI 1174052112
Internal Medicine in Mount Kisco, NY

Active since June 05, 2017PECOS EnrolledAccepts Medicare Assignment
400 E MAIN ST, MOUNT KISCO, NY 10549(302) 383-9764 Get Directions Write a Review

NPPES record last updated: November 14, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 14, 2023, Oct 28, 2020, Jul 15, 2020 and 3 more (6 updates tracked since 2017).

About Christina O'brien Md NPPES

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

CHRISTINA O'BRIEN MD (NPI 1174052112) is an individual internal medicine provider in Mount Kisco, New York, licensed in Massachusetts (281695) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, is affiliated with Lenox Hill Hospital, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1174052112
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameCHRISTINA O'BRIENCredential: MD
Location Address400 E MAIN STMount Kisco, NY 10549-3477
Mailing Address16 Tall Pines LnMount Kisco, NY 10549-4108 · (302) 383-9764 · Fax (508) 334-1977
Phone(302) 383-9764
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateJune 5, 2017
Last NPPES UpdateNovember 14, 20236 updates tracked since enumeration
NPPES CertifiedNovember 14, 2023
✔ NPI 1174052112 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in MA · 281695✔ Licensed in NY · 317296✔ Licensed in NM · MD2023-1322
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
400 E MAIN ST, Mount Kisco, NY 10549
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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

Christina O'brien 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.

PECOS PAC ID4385982768
PECOS Enrollment IDI20230510002528
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 3

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 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.
135 services93 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.
23 services23 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
23 services22 patients

Hospital Affiliations CMS Care Compare 2

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

Lenox Hill Hospital

Acute Care Hospitals · New York, NY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330119
Location100 East 77th StreetNew York, NY 10021 · New York County
Emergency services Birthing friendly

Northern Westchester Hospital

Acute Care Hospitals · Mount Kisco, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330162
Location400 East Main StreetMount Kisco, NY 10549 · Westchester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10549 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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 20

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

MS. MICHAEL ARLIA MD
Anesthesiology
400 E MAIN ST, NORTHERN WESTCHESTER HOSPITAL
MOUNT KISCO, NY 10549
Westchester County (914) 666-1691
DR. HERBERTH BALSELLS D.O.
Emergency Medicine
400 E MAIN ST
MOUNT KISCO, NY 10549
Westchester County (914) 666-1254
SABINA MUSOVIC SEFOVIC MD
Anesthesiology (Critical Care Medicine)
400 E MAIN ST
MOUNT KISCO, NY 10549
Westchester County (914) 666-1200
DR. ANDREW MONIK MOGGA MD
Student in an Organized Health Care Education/Training Program
400 E MAIN ST
MOUNT KISCO, NY 10549
Westchester County (914) 666-1931
MAZEN T KHALIFEH MD
Pediatrics (Neonatal-Perinatal Medicine)
400 E MAIN ST, NORTHERN WESTCHESTER HOSPITAL
MOUNT KISCO, NY 10549
Westchester County (914) 666-1862
NANDINI ANANDU MD
Internal Medicine
400 E MAIN ST, NORTHERN WESTCHESTER HOSPITAL
MOUNT KISCO, NY 10549
Westchester County (914) 666-1200
ANISHA DUVVI
Student in an Organized Health Care Education/Training Program
400 E MAIN ST
MOUNT KISCO, NY 10549
Westchester County (914) 666-1931
KAREN S ARTHUR MD
Surgery
400 E MAIN ST, NWH NORTH BUILDING 1ST FLOOR
MOUNT KISCO, NY 10549
Westchester County (914) 242-7640

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 Christina O'brien's NPI number?

The NPI number for Christina O'brien is 1174052112. It was assigned to this individual provider in the NPPES registry on June 5, 2017.

Where is Christina O'brien located?

Christina O'brien practices at 400 E Main St, Mount Kisco, NY 10549. The listed phone number is (302) 383-9764.

What is Christina O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Christina O'brien enrolled in Medicare?

Yes. Christina O'brien 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 Christina O'brien affiliated with any hospitals?

According to CMS data, Christina O'brien is affiliated with Lenox Hill Hospital and Northern Westchester Hospital.

When was this NPI record last updated?

The NPPES record for Christina O'brien was last updated on November 14, 2023. 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.