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OKKYUNG KIM M.D.
NPI 1386871168
Psychiatry & Neurology - Neurology in Oakland, CA

Active since June 18, 2009PECOS EnrolledAccepts Medicare Assignment
350 HAWTHORNE AVE, OAKLAND, CA 94609(510) 655-4000 Get Directions Write a Review

NPPES record last updated: March 7, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Mar 7, 2025, Jul 13, 2021 (2 updates tracked since 2021).

About Okkyung Kim M.d. NPPES

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

OKKYUNG KIM M.D. (NPI 1386871168) is an individual neurology provider in Oakland, California, licensed in California (A111229) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Walnut Creek, and is a graduate of Rush Medical College Of Rush University (2008).

NPPES Registry Identity

NPI1386871168
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameOKKYUNG KIMCredential: M.D.
Location Address350 HAWTHORNE AVEOakland, CA 94609-3108
Mailing AddressPo Box 276950Sacramento, CA 95827-6950
Phone(510) 655-4000
Sole ProprietorNo
Medical School CMSRush Medical College Of Rush UniversityGraduated 2008
Enumeration DateJune 18, 2009
Last NPPES UpdateMarch 7, 20252 updates tracked since enumeration
NPPES CertifiedMarch 7, 2025
✔ NPI 1386871168 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CA · A111229
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
350 HAWTHORNE AVE, Oakland, CA 94609
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Secondary Practice Location 1

Location 1575 Lennon Ln Ste 152Walnut Creek, CA 94598-2443 · Phone (925) 602-7060 · Fax (925) 602-7070

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

Okkyung Kim M.d. 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 ID9335396720
PECOS Enrollment IDI20120820000582
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 Okkyung Kim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation
6.0 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180

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.
73 services51 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.
64 services64 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.
49 services26 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94609 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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 20

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

JEEVEN BRAH M.D.
Hospitalist
350 HAWTHORNE AVE, ROOM 2346
OAKLAND, CA 94609
Alameda County (510) 869-6883
BARBARA CHAN PT
Physical Therapist
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (510) 655-4000
DR. EMILY MEILAN SZE M.D.
Emergency Medicine
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (510) 869-2500
GRACE SHEBA RANI MANCHALA MD
Student in an Organized Health Care Education/Training Program
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (510) 655-4000
EDGAR KARANJAH
Student in an Organized Health Care Education/Training Program
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (510) 869-8751
NUPOOR GAJJAR MD
Pathology (Cytopathology)
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (510) 869-6567
DR. ALLISON GANNON POLLOCK M.D.
Physical Medicine & Rehabilitation
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (510) 847-7771
KERRY CANTON
Occupational Therapist
350 HAWTHORNE AVE
OAKLAND, CA 94609
Alameda County (774) 219-9575

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 Okkyung Kim's NPI number?

The NPI number for Okkyung Kim is 1386871168. It was assigned to this individual provider in the NPPES registry on June 18, 2009.

Where is Okkyung Kim located?

Okkyung Kim practices at 350 Hawthorne Ave, Oakland, CA 94609. The listed phone number is (510) 655-4000.

What is Okkyung Kim's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Okkyung Kim enrolled in Medicare?

Yes. Okkyung Kim 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 Okkyung Kim's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Okkyung Kim reassigns Medicare benefits to Sutter Bay Medical Foundation (Orinda, 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 Okkyung Kim'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 Okkyung Kim was last updated on March 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.