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KAREN CHONG
NPI 1427607910
Dentist in Pleasanton, CA

Active since September 06, 2019PECOS Enrolled
2709 STONERIDGE DR STE 103, PLEASANTON, CA 94588(925) 523-3345 Get Directions Write a Review

NPPES record last updated: June 5, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 2, 2020, Sep 6, 2019 (2 updates tracked since 2019).

About Karen Chong NPPES

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

KAREN CHONG (NPI 1427607910) is an individual dentist in Pleasanton, California, licensed in California (DDS104274) and active in the NPI registry since September 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427607910
Entity TypeIndividualFemale
Primary Taxonomy122300000X
Provider Legal NameKAREN CHONG
Location Address2709 STONERIDGE DR STE 103Pleasanton, CA 94588-8349
Mailing Address2709 Stoneridge Dr Ste 103Pleasanton, CA 94588-8349 · (925) 523-3345
Phone(925) 523-3345
Sole ProprietorYes
Enumeration DateSeptember 6, 2019
Last NPPES UpdateJune 5, 20222 updates tracked since enumeration
NPPES CertifiedJune 5, 2022
✔ NPI 1427607910 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in CA · DDS104274
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.
2709 STONERIDGE DR STE 103, Pleasanton, CA 94588
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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 (PECOS)

Karen Chong 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.

Medicare Billing Reassignments

3

Medicare enrollment records show Karen Chong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco
34 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
34 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
Ucsf Oral & Maxillofacial Surgery
34 mi
Oral & Maxillofacial Surgery
513 PARNASSUS AVE, BOX 0476
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 34 clinicians in this Medicare group
NPI 1679652598 (415) 476-3242

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 94588 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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 Chong's NPI number?

The NPI number for Karen Chong is 1427607910. It was assigned to this individual provider in the NPPES registry on September 6, 2019.

Where is Karen Chong located?

Karen Chong practices at 2709 Stoneridge Dr Ste 103, Pleasanton, CA 94588. The listed phone number is (925) 523-3345.

What is Karen Chong's specialty?

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

Is Karen Chong enrolled in Medicare?

Yes. Karen Chong is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Karen Chong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Chong reassigns Medicare benefits to 3 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Oral & Maxillofacial Surgery (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 Karen Chong'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 Karen Chong was last updated on June 5, 2022. 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.