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

DR. RUBY KWAK MD
NPI 1124606512
Dermatology in Ann Arbor, MI

Active since March 29, 2021PECOS Enrolled
1500 E MEDICAL CENTER DR, ANN ARBOR, MI 48109(734) 936-4000 Get Directions Write a Review

NPPES record last updated: June 23, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 6, 2025, Mar 29, 2021 (2 updates tracked since 2021).

About Dr. Ruby Kwak Md NPPES

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

DR. RUBY KWAK MD (NPI 1124606512) is an individual dermatology provider in Ann Arbor, Michigan, licensed in Michigan (4301517523) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1124606512
Entity TypeIndividualFemale
Primary Taxonomy207N00000X
Provider Legal NameDR. RUBY KWAKCredential: MD
Location Address1500 E MEDICAL CENTER DRAnn Arbor, MI 48109-5000
Mailing Address3621 S State StAnn Arbor, MI 48108-1633 · (734) 647-5299
Sole ProprietorYes
Enumeration DateMarch 29, 2021
Last NPPES UpdateJune 23, 20262 updates tracked since enumeration
NPPES CertifiedJune 23, 2026
NPI 1124606512 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License Licensed in MI · 4301517523
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109

Secondary Practice Location 1

Location 155 Fruit StBoston, MA 02114-2696 · Phone (617) 726-2000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Ruby Kwak Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48109 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
$90.76 typical visit price
range $58.04 – $177.36
Typical copayment $22.69 (range $14.51 – $44.34)
Most-billed visit code 99203
Established Patient
$72.38 typical visit price
range $18.32 – $143.49
Typical copayment $18.09 (range $4.58 – $35.87)
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.

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.

Pathology (Forensic Pathology)
1500 E MEDICAL CENTER DR, 2ND FLOOR UNIVERSITY HOSPITAL RECP PATHOLOGY
ANN ARBOR, MI 48109
Internal Medicine (Gastroenterology)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Pathology (Cytopathology)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Pediatrics
1500 E MEDICAL CENTER DR, 12TH FLOOR C.S. MOTT CHILDREN'S HOSPITAL ROOM 525
ANN ARBOR, MI 48109
Pediatrics (Pediatric Infectious Diseases)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Physician Assistant
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Nurse Anesthetist, Certified Registered
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Family Medicine (Hospice and Palliative Medicine)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

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 Ruby Kwak's NPI number?

The NPI number for Ruby Kwak is 1124606512. It was assigned to this individual provider in the NPPES registry on March 29, 2021.

Where is Ruby Kwak located?

Ruby Kwak practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.

What is Ruby Kwak's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Ruby Kwak enrolled in Medicare?

Yes. Ruby Kwak is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Ruby Kwak was last updated on June 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 48 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.