DR. JAMES BUM-SUK HAN D.D.S, M.D.
NPI 1013221324
Dentist in Pleasant Hill, CA

Q: What is James Han's NPI number?

The NPI number for James Han is 1013221324. It was assigned to this individual provider in the NPPES registry on July 28, 2010.

Q: What is James Han's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for James Han was last updated on July 21, 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.

Active since July 28, 2010PECOS Enrolled

401 GREGORY LANE, SUITE 208, PLEASANT HILL, CA 94523(925) 689-8500 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Jun 23, 2017 (2 updates tracked since 2017).

On this page

About Dr. James Bum-suk Han D.d.s, M.d. NPPES

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

DR. JAMES BUM-SUK HAN D.D.S, M.D. (NPI 1013221324) is an individual dentist in Pleasant Hill, California, licensed in California (D100039) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013221324

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameDR. JAMES BUM-SUK HANCredential: D.D.S, M.D.

Location Address401 GREGORY LANE, SUITE 208Pleasant Hill, CA 94523

Mailing Address401 Gregory Lane, Suite 208Pleasant Hill, CA 94523 · (925) 689-8500

Phone(925) 689-8500

Sole ProprietorNo

Enumeration DateJuly 28, 2010

Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration

✔ NPI 1013221324 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in CA · D100039

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.

401 GREGORY LANE, Pleasant Hill, CA 94523

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Other Identifiers 1

MedicaidENROLLEDMN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. James Bum-suk Han D.d.s, M.d. 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 Reassignment

Medicare enrollment records show James Han reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

John Muir Trauma Physicians Billing Service

3.1 mi

Trauma Surgery

1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598

Reassigned Medicare billing, California enrollment
810 clinicians in this Medicare group

NPI 1962551861 (925) 947-5331

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 94523 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.

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. ELLEN G NEWMAN PHD MFT

Marriage & Family Therapist

401 GREGORY LANE, SUITE 108
PLEASANT HILL, CA 94523

Contra Costa County (925) 798-3161

MARIELA GAMBOA D.D.S.

Dentist (General Practice)

401 GREGORY LANE, SUITE 214
PLEASANT HILL, CA 94523

Contra Costa County (925) 686-0170

SEBASTIAN S LAVINO DDS

Dentist

401 GREGORY LANE, SUITE 142
PLEASANT HILL, CA 94523

Contra Costa County (925) 689-7122

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 James Han's NPI number?

The NPI number for James Han is 1013221324. It was assigned to this individual provider in the NPPES registry on July 28, 2010.

Where is James Han located?

James Han practices at 401 Gregory Lane Suite 208, Pleasant Hill, CA 94523. The listed phone number is (925) 689-8500.

What is James Han's specialty?

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

Is James Han enrolled in Medicare?

Yes. James Han is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for James Han's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Han reassigns Medicare benefits to John Muir Trauma Physicians Billing Service (Walnut Creek, 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 James Han'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 James Han was last updated on July 21, 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.