1. Home
  2. Directory
  3. California
  4. Newport Beach
  5. Internal Medicine
  6. NPI Profile

DR. JANET SEUNGMIN LEE D.O.
NPI 1679004246
Internal Medicine in Newport Beach, CA

Active since March 24, 2017PECOS EnrolledAccepts Medicare Assignment
280 NEWPORT CENTER DR STE 110, NEWPORT BEACH, CA 92660(949) 835-3054(949) 276-3221 Get Directions Write a Review

NPPES record last updated: June 18, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 18, 2025, Nov 16, 2022, Mar 24, 2017 (3 updates tracked since 2017).

About Dr. Janet Seungmin Lee D.o. NPPES

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

DR. JANET SEUNGMIN LEE D.O. (NPI 1679004246) is an individual internal medicine provider in Newport Beach, California, licensed in California (20A16989) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Orange, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1679004246
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. JANET SEUNGMIN LEECredential: D.O.
Location Address280 NEWPORT CENTER DR STE 110Newport Beach, CA 92660-7541
Mailing Address280 Newport Center Dr Ste 110Newport Beach, CA 92660-7541 · (949) 835-3054 · Fax (949) 276-3221
Phone(949) 835-3054
Fax(949) 276-3221
Sole ProprietorYes
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 24, 2017
Last NPPES UpdateJune 18, 20253 updates tracked since enumeration
NPPES CertifiedJune 18, 2025
✔ NPI 1679004246 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A16989
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.
280 NEWPORT CENTER DR STE 110, Newport Beach, CA 92660
Open in Google Maps ↗

Secondary Practice Location 1

Location 1101 The City Dr SOrange, CA 92868-3201 · Phone (714) 456-5691 · Fax (714) 456-8874

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. Janet Seungmin Lee 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 ID6204279060
PECOS Enrollment IDI20240208001819
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

2

Medicare enrollment records show Janet Lee reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Andrew Nguyen Do A Professional Medical Corporation
Same address
Neurology
280 NEWPORT CENTER DR STE 110
Newport Beach, CA 92660
  • Reassigned Medicare billing, California enrollment
  • 11 clinicians in this Medicare group
NPI 1164202396 (702) 909-5903
Circle Medical Care Of California
384 mi
Family Medicine
333 1ST ST STE A
San Francisco, CA 94105
  • Reassigned Medicare billing, California enrollment
  • 178 clinicians in this Medicare group
NPI 1134596091 (888) 803-3370

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 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 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
369 services37 patients
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.
37 services29 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.
35 services34 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92660 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 2

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

ANDREW NGUYEN DO A PROFESSIONAL MEDICAL CORPORATION
Psychiatry & Neurology (Neurology)
280 NEWPORT CENTER DR STE 110
NEWPORT BEACH, CA 92660
Orange County (702) 909-5903
DR. NITA CHEN MD
Psychiatry & Neurology (Neurology)
280 NEWPORT CENTER DR STE 110
NEWPORT BEACH, CA 92660
Orange County (949) 478-3305

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 Janet Lee's NPI number?

The NPI number for Janet Lee is 1679004246. It was assigned to this individual provider in the NPPES registry on March 24, 2017.

Where is Janet Lee located?

Janet Lee practices at 280 Newport Center Dr Ste 110, Newport Beach, CA 92660. The listed phone number is (949) 835-3054.

What is Janet Lee's specialty?

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

Is Janet Lee enrolled in Medicare?

Yes. Janet Lee 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 Janet Lee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Janet Lee reassigns Medicare benefits to 2 organizations: Andrew Nguyen Do A Professional Medical Corporation (Newport Beach, CA) and Circle Medical Care Of California (San Francisco, CA). 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 Janet Lee'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 Janet Lee was last updated on June 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.