DR. MICHAEL SUNGWON YOO M.D.
NPI 1669640934
Internal Medicine in New Haven, CT

Q: What is Michael Yoo's NPI number?

The NPI number for Michael Yoo is 1669640934. It was assigned to this individual provider in the NPPES registry on February 20, 2008.

Q: What is Michael Yoo's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Michael Yoo was last updated on December 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since February 20, 2008PECOS EnrolledAccepts Medicare Assignment

20 YORK ST, NEW HAVEN, CT 06510(203) 688-4748(203) 688-4740 Get Directions Write a Review

NPPES record last updated: December 22, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Michael Sungwon Yoo M.d. NPPES

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

DR. MICHAEL SUNGWON YOO M.D. (NPI 1669640934) is an individual internal medicine provider in New Haven, Connecticut, licensed in Connecticut (049651) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS and is a graduate of Emory University School Of Medicine (2007).

NPPES Registry Identity

NPI1669640934

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. MICHAEL SUNGWON YOOCredential: M.D.

Location Address20 YORK STNew Haven, CT 06510-3220

Mailing Address20 York StNew Haven, CT 06510-3220 · (203) 688-4748 · Fax (203) 688-4740

Phone(203) 688-4748

Fax(203) 688-4740

Sole ProprietorNo

Medical School CMSEmory University School Of MedicineGraduated 2007

Enumeration DateFebruary 20, 2008

Last NPPES UpdateDecember 22, 2021

✔ NPI 1669640934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CT · 049651

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.

Also ListedHospitalistTaxonomy 208M00000X · License 049651 (CT)

20 YORK ST, New Haven, CT 06510

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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. Michael Sungwon Yoo 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 ID4688852676

PECOS Enrollment IDI20141105000340

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 Reassignment

Medicare enrollment records show Michael Yoo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

2,555 mi

Internal Medicine

7373 WEST LANE
Stockton, CA 95210

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1548343510 (209) 476-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 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

$138.84 typical visit price

range $60.82 – $183.10

Typical copayment $34.71 (range $15.20 – $45.77)

Most-billed visit code 99204

Established Patient

$106.68 typical visit price

range $19.76 – $149.26

Typical copayment $26.67 (range $4.94 – $37.31)

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.

AUDREY P SENIOR APRN

Nurse Practitioner (Family)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-5860

DR. YEISID F FIGUEREDO M.D.

Pediatrics (Neonatal-Perinatal Medicine)

20 YORK ST, DEPT OF NEONATOLOGY
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-2320

YALE NEW HAVEN HOSPITAL

Durable Medical Equipment & Medical Supplies (Customized Equipment)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-2046

TAYLOR KINGSTON

Dietitian, Registered

20 YORK ST, FOOD AND NUTRITION EPB806
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-9185

DR. TRAVIS DANIEL BONTRAGER MD

Hospitalist

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-1734

TERESA JOSEPH D.O.

Internal Medicine (Nephrology)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 737-8894

MR. BRAD ST. MARTIN MD

Obstetrics & Gynecology

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

BERNADETTE BIMONTE-HACKETT LCSW

Social Worker (Clinical)

20 YORK ST, SOCIAL WORK EP10-635
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-5161

JOHN A VANJAH CRNA

Nurse Anesthetist, Certified Registered

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 785-2802

DR. SEAN MICHAEL PENNETTI MD

Psychiatry & Neurology (Neurology)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

MARIE ANJELIESE RODRIGUEZ

Internal Medicine

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

RUCHI CHANDRAKANT RANA M.S., CCC-SLP

Speech-Language Pathologist

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 512-8951

JOSHUA REED BIA

Emergency Medicine

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

DR. MARGARET M XU MD

Internal Medicine (Geriatric Medicine)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

EDWARD S LEE MD, PHD

Pathology (Blood Banking & Transfusion Medicine)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

SYDNEY M JUDGE PA-C

Physician Assistant (Surgical)

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

FRANKLIN CHEN

Pharmacist

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 200-3100

CHRISTOPHER EL MOUHAYYAR

Internal Medicine

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

BO PENG MD

Internal Medicine

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

ELAINE COLOMB MD

Student in an Organized Health Care Education/Training Program

20 YORK ST
NEW HAVEN, CT 06510

South Central Connecticut Planning Region (203) 688-4242

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 Michael Yoo's NPI number?

The NPI number for Michael Yoo is 1669640934. It was assigned to this individual provider in the NPPES registry on February 20, 2008.

Where is Michael Yoo located?

Michael Yoo practices at 20 York St, New Haven, CT 06510. The listed phone number is (203) 688-4748.

What is Michael Yoo's specialty?

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

Is Michael Yoo enrolled in Medicare?

Yes. Michael Yoo 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 organization bills Medicare for Michael Yoo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Yoo reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). The 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 Michael Yoo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Yoo was last updated on December 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.