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KEI-LWUN YEE MD
NPI 1649859885
Internal Medicine - Rheumatology in Whittier, CA

Active since April 05, 2021PECOS EnrolledAccepts Medicare Assignment
12462 PUTNAM ST STE 402, WHITTIER, CA 90602(562) 967-2788(562) 789-4468 Get Directions Write a Review

NPPES record last updated: February 4, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 4, 2026, Apr 5, 2021 (2 updates tracked since 2021).

About Kei-lwun Yee Md NPPES

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

KEI-LWUN YEE MD (NPI 1649859885) is an individual rheumatology provider in Whittier, California, licensed in California (A181842) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Whittier, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1649859885
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameKEI-LWUN YEECredential: MD
Location Address12462 PUTNAM ST STE 402Whittier, CA 90602-1049
Mailing Address12462 Putnam St Ste 402Whittier, CA 90602-1049
Phone(562) 967-2788
Fax(562) 789-4468
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateApril 5, 2021
Last NPPES UpdateFebruary 4, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2026
✔ NPI 1649859885 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · A181842
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
Also ListedInternal MedicineTaxonomy 207R00000X · License A181842 (CA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
12462 PUTNAM ST STE 402, Whittier, CA 90602
Open in Google Maps ↗

Secondary Practice Location 1

Location 112401 Washington BlvdWhittier, CA 90602-1006 · Phone (562) 698-0811 · Fax (562) 789-5902

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

Kei-lwun Yee Md 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 ID749757326
PECOS Enrollment IDI20260501000085
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 Kei-lwun Yee reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Pih Health Physicians
0.1 mi
Obstetrics & Gynecology
12462 PUTNAM STREET
Whittier, CA 90602
  • Reassigned Medicare billing, California enrollment
  • 840 clinicians in this Medicare group
NPI 1821224247 (562) 789-5430

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 90602 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 3

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

DR. SEYEDEHSARA SEYEDALI MD
Internal Medicine (Rheumatology)
12462 PUTNAM ST STE 402
WHITTIER, CA 90602
Los Angeles County (562) 967-2788
JESSICA WONG MD
Internal Medicine (Rheumatology)
12462 PUTNAM ST STE 402
WHITTIER, CA 90602
Los Angeles County (562) 967-2788
DANIEL J LEE MD
Orthopaedic Surgery (Hand Surgery)
12462 PUTNAM ST STE 402
WHITTIER, CA 90602
Los Angeles County (562) 789-5461

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 Kei-lwun Yee's NPI number?

The NPI number for Kei-lwun Yee is 1649859885. It was assigned to this individual provider in the NPPES registry on April 5, 2021.

Where is Kei-lwun Yee located?

Kei-lwun Yee practices at 12462 Putnam St Ste 402, Whittier, CA 90602. The listed phone number is (562) 967-2788.

What is Kei-lwun Yee's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Kei-lwun Yee enrolled in Medicare?

Yes. Kei-lwun Yee 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 Kei-lwun Yee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kei-lwun Yee reassigns Medicare benefits to Pih Health Physicians (Whittier, 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 Kei-lwun Yee'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 Kei-lwun Yee was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.