DR. KAREN MIKI MATSUMURA-LEM D.D.S.
NPI 1235271891
Dentist in Pomona, CA

Q: What is Karen Matsumura-lem's NPI number?

The NPI number for Karen Matsumura-lem is 1235271891. It was assigned to this individual provider in the NPPES registry on February 12, 2007.

Q: What is Karen Matsumura-lem's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: Is Karen Matsumura-lem enrolled in Medicare?

No. Karen Matsumura-lem has opted out of Medicare through April 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Active since February 12, 2007Opted out of Medicare · through Apr 1, 2027

309 E. SECOND STREET, POMONA, CA 91766(909) 469-8607 Get Directions Write a Review

NPPES record last updated: August 7, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Karen Miki Matsumura-lem D.d.s. NPPES

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

DR. KAREN MIKI MATSUMURA-LEM D.D.S. (NPI 1235271891) is an individual dentist in Pomona, California, licensed in California (44030) and active in the NPI registry since February 2007. She has opted out of Medicare through April 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1235271891

Entity TypeIndividualFemale

Primary Taxonomy122300000X

Provider Legal NameDR. KAREN MIKI MATSUMURA-LEMCredential: D.D.S.

Location Address309 E. SECOND STREETPomona, CA 91766-1854

Mailing Address309 E. Second StreetPomona, CA 91766-1854 · (909) 469-8607

Phone(909) 469-8607

Sole ProprietorNo

Enumeration DateFebruary 12, 2007

Last NPPES UpdateAugust 7, 2023

NPPES CertifiedAugust 7, 2023

✔ NPI 1235271891 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in CA · 44030

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

309 E. SECOND STREET, Pomona, CA 91766

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Karen Miki Matsumura-lem D.d.s. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from April 1, 2017 through April 1, 2027.

Opt-Out Effective DateApril 1, 2017

Opt-Out In Effect ThroughApril 1, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91766 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

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 Karen Matsumura-lem's NPI number?

The NPI number for Karen Matsumura-lem is 1235271891. It was assigned to this individual provider in the NPPES registry on February 12, 2007.

Where is Karen Matsumura-lem located?

Karen Matsumura-lem practices at 309 E. Second Street, Pomona, CA 91766. The listed phone number is (909) 469-8607.

What is Karen Matsumura-lem's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Is Karen Matsumura-lem enrolled in Medicare?

No. Karen Matsumura-lem has opted out of Medicare through April 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Karen Matsumura-lem was last updated on August 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.