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DR. HANNAH YOON M.D.
NPI 1255560603
Radiology - Radiation Oncology in Corning, NY

Active since July 07, 2009PECOS EnrolledAccepts Medicare Assignment
81.54/100
CMS Quality Rating
2 GUTHRIE DR, CORNING, NY 14830(607) 937-3100 Get Directions Write a Review

NPPES record last updated: October 20, 2021. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 20, 2021, Jul 15, 2016 (2 updates tracked since 2016).

About Dr. Hannah Yoon M.d. NPPES

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

DR. HANNAH YOON M.D. (NPI 1255560603) is an individual radiation oncology provider in Corning, New York, licensed in New York (274986) and active in the NPI registry since July 2009. She is enrolled in Medicare PECOS, is affiliated with St Mary's Healthcare, and is a graduate of Js Weill Medical College, Cornell University (2009).

NPPES Registry Identity

NPI1255560603
Entity TypeIndividualFemale
Primary Taxonomy2085R0001X
Provider Legal NameDR. HANNAH YOONCredential: M.D.
Location Address2 GUTHRIE DRCorning, NY 14830-3697
Mailing Address2 Guthrie DrCorning, NY 14830-3697
Phone(607) 937-3100
Sole ProprietorNo
Medical School CMSJs Weill Medical College, Cornell UniversityGraduated 2009
Enumeration DateJuly 7, 2009
Last NPPES UpdateOctober 20, 20212 updates tracked since enumeration
NPPES CertifiedOctober 20, 2021
✔ NPI 1255560603 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
License✔ Licensed in NY · 274986
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
2 GUTHRIE DR, Corning, NY 14830
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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 and accepts Medicare assignment

Dr. Hannah Yoon 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 ID4688997190
PECOS Enrollment IDI20150107002267
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 Hannah Yoon reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Guthrie Medical Group, P.C.
2.0 mi
Multi-Specialty
130 CENTERWAY
Corning, NY 14830
  • Reassigned Medicare billing, New York and Pennsylvania enrollments
  • Medicare enrollment name: Guthrie Medical Group PC
  • Also billed through NPI 1538118732 (Pennsylvania)
  • 798 clinicians in this Medicare group
NPI 1134178635 (607) 936-9971
Pottstown Hospital, LLC
150 mi
Hematology & Oncology
1600 E HIGH ST
Pottstown, PA 19464
  • Reassigned Medicare billing, Pennsylvania enrollment
  • Also billed through NPI 1669983011 (Pennsylvania)
  • 30 clinicians in this Medicare group
NPI 1093225369 (610) 327-7000
St Marys Healthcare
156 mi
General Acute Care Hospital
427 GUY PARK AVE, ST MARYS HEALTHCARE PRIMARY CARE DEPT
Amsterdam, NY 12010
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: St. Mary's Healthcare
  • 144 clinicians in this Medicare group
NPI 1518926401 (518) 841-7407
Phoenixville Hospital, LLC
159 mi
Hematology & Oncology
824 MAIN ST STE 101
Phoenixville, PA 19460
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 19 clinicians in this Medicare group
NPI 1346961588 (610) 983-1800

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 5

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.

Radiation treatment management, 5 treatment sessions 77427
Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.
72 services19 patients
Calculation of radiation therapy dose 77300
Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.
44 services11 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.
36 services32 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
18 services17 patients
Complex radiation therapy planning 77263
Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

St Mary's Healthcare

Acute Care Hospitals · Amsterdam, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330047
Location427 Guy Park AvenueAmsterdam, NY 12010 · Montgomery County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14830 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
$166.88 typical visit price
range $54.87 – $166.88
Typical copayment $41.72 (range $13.71 – $41.72)
Most-billed visit code 99205
Established Patient
$68.57 typical visit price
range $17.54 – $136.14
Typical copayment $17.14 (range $4.38 – $34.03)
Most-billed visit code 99213
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.

81.54/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75.04
Promoting Interoperability100
Improvement Activities40
Cost63.42

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.

VRUSHALI PACHPANDE
Internal Medicine (Hematology & Oncology)
2 GUTHRIE DR
CORNING, NY 14830
Steuben County (607) 937-3100
AMANDEEP KAUR MD
Internal Medicine
2 GUTHRIE DR
CORNING, NY 14830
Steuben County (607) 937-3100
GABRIELLA MCHENRY
Nurse Practitioner (Adult Health)
2 GUTHRIE DR
CORNING, NY 14830
Steuben County (607) 937-3100
JULIE NICHOLS NP
Nurse Practitioner (Adult Health)
2 GUTHRIE DR
CORNING, NY 14830
Steuben County (607) 937-3100

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 Hannah Yoon's NPI number?

The NPI number for Hannah Yoon is 1255560603. It was assigned to this individual provider in the NPPES registry on July 7, 2009.

Where is Hannah Yoon located?

Hannah Yoon practices at 2 Guthrie Dr, Corning, NY 14830. The listed phone number is (607) 937-3100.

What is Hannah Yoon's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Hannah Yoon enrolled in Medicare?

Yes. Hannah Yoon 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 Hannah Yoon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hannah Yoon reassigns Medicare benefits to 4 organizations: Guthrie Medical Group, P.C. (Corning, NY), Pottstown Hospital, LLC (Pottstown, PA), St Marys Healthcare (Amsterdam, NY) and Phoenixville Hospital, LLC (Phoenixville, PA). 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 Hannah Yoon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Hannah Yoon affiliated with any hospitals?

According to CMS data, Hannah Yoon is affiliated with St Mary's Healthcare.

When was this NPI record last updated?

The NPPES record for Hannah Yoon was last updated on October 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.