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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. DIANNE SEO D.O.
NPI 1780034819
Surgery in Farmington, CT

Active since June 20, 2016PECOS EnrolledAccepts Medicare Assignment
99.15/100
CMS Quality Rating
263 FARMINGTON AVE, FARMINGTON, CT 06030(860) 679-8080(860) 679-1430 Get Directions Write a Review

NPPES record last updated: June 17, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 12, 2022, Nov 22, 2021, Mar 9, 2019 and 1 more (4 updates tracked since 2016).

About Dr. Dianne Seo D.o. NPPES

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

DR. DIANNE SEO D.O. (NPI 1780034819) is an individual surgery provider in Farmington, Connecticut, licensed in Connecticut (085379) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS, is affiliated with Montefiore New Rochelle Hospital, and maintains a secondary practice location in White Plains.

NPPES Registry Identity

NPI1780034819
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameDR. DIANNE SEOCredential: D.O.
Location Address263 FARMINGTON AVEFarmington, CT 06030-8063
Mailing Address263 Farmington AveFarmington, CT 06030-8082 · (860) 679-8080 · Fax (860) 679-1430
Phone(860) 679-8080
Fax(860) 679-1430
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJune 20, 2016
Last NPPES UpdateJune 17, 20264 updates tracked since enumeration
NPPES CertifiedJune 17, 2026
✔ NPI 1780034819 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Licenses✔ Licensed in CT · 085379✔ Licensed in NY · 318167-01
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
263 FARMINGTON AVE, Farmington, CT 06030
Open in Google Maps ↗

Secondary Practice Location 1

Location 12 Longview Ave Ste 400White Plains, NY 10601-5000 · Phone (914) 849-7580 · Fax (914) 849-7555

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

Dr. Dianne Seo D.o. 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 ID2062881014
PECOS Enrollment IDI20221213002936
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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
30 services18 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
17 services11 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
15 services15 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.
15 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Montefiore New Rochelle Hospital

Acute Care Hospitals · New Rochelle, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330184
Location16 Guion PlaceNew Rochelle, NY 10802 · Westchester County
Emergency services Birthing friendly

White Plains Hospital Center

Acute Care Hospitals · White Plains, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330304
Location41 East Post R0adWhite Plains, NY 10601 · Westchester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06030 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
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
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.

99.15/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability99
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.

STATE OF CONNECTICUT HEALTH CENTER
Pathology (Anatomic Pathology & Clinical Pathology)
263 FARMINGTON AVE, LABORATORY HBP GROUP
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-7503
MR. IAN THOMAS MCNEILL
Neurological Surgery
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-8080
DR. LUIS CHAVEZ DE PAZ DDS, MS, PHD
Dentist (Endodontics)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-2719
TARUNYA REDDY VEDERE
Internal Medicine (Endocrinology, Diabetes & Metabolism)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-3245
ZACHARY TALLENT SOLOMON
Surgery
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-3467
MICHAEL CONNOLLY
Psychiatry & Neurology (Psychiatry)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-4733
EMILY WENG DO
Internal Medicine (Gastroenterology)
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-3158
ANDREW KEMERLEY DO
Student in an Organized Health Care Education/Training Program
263 FARMINGTON AVE
FARMINGTON, CT 06030
Capitol Planning Region (860) 679-3467

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 Dianne Seo's NPI number?

The NPI number for Dianne Seo is 1780034819. It was assigned to this individual provider in the NPPES registry on June 20, 2016.

Where is Dianne Seo located?

Dianne Seo practices at 263 Farmington Ave, Farmington, CT 06030. The listed phone number is (860) 679-8080.

What is Dianne Seo's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Dianne Seo enrolled in Medicare?

Yes. Dianne Seo 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 Dianne Seo affiliated with any hospitals?

According to CMS data, Dianne Seo is affiliated with Montefiore New Rochelle Hospital and White Plains Hospital Center.

When was this NPI record last updated?

The NPPES record for Dianne Seo was last updated on June 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 days 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.