DR. KAREN NAOMI KOBAYASHI D.O.
NPI 1497929517
Obstetrics & Gynecology in Chula Vista, CA

Q: What is Karen Kobayashi's NPI number?

The NPI number for Karen Kobayashi is 1497929517. It was assigned to this individual provider in the NPPES registry on April 18, 2008.

Q: What is Karen Kobayashi's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Karen Kobayashi was last updated on January 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 April 18, 2008PECOS EnrolledAccepts Medicare Assignment

751 MEDICAL CENTER CT, CHULA VISTA, CA 91911(619) 502-5800 Get Directions Write a Review

NPPES record last updated: January 23, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Karen Naomi Kobayashi D.o. NPPES

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

DR. KAREN NAOMI KOBAYASHI D.O. (NPI 1497929517) is an individual obstetrics & gynecology provider in Chula Vista, California, licensed in California (20A10831) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS, maintains a secondary practice location in National City, and is a graduate of Nova Southeastern College Of Osteo Medicine (2005).

NPPES Registry Identity

NPI1497929517

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. KAREN NAOMI KOBAYASHICredential: D.O.

Location Address751 MEDICAL CENTER CTChula Vista, CA 91911-6617

Mailing Address877 Island Ave Unit 314San Diego, CA 92101-7148 · (773) 301-4896

Phone(619) 502-5800

Sole ProprietorNo

Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 2005

Enumeration DateApril 18, 2008

Last NPPES UpdateJanuary 23, 2019

✔ NPI 1497929517 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

Licenses✔ Licensed in CA · 20A10831✔ Licensed in IL · 036.120496

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

751 MEDICAL CENTER CT, Chula Vista, CA 91911

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Secondary Practice Location 1

Location 1655 Euclid Ave, Suite 409National City, CA 91950-2957 · Phone (619) 267-8313

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

Dr. Karen Naomi Kobayashi D.o. 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 ID6709146525

PECOS Enrollment IDI20180215001863

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

Medicare enrollment records show Karen Kobayashi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Karen Kobayashi Inc

Same address

Obstetrics & Gynecology

751 MEDICAL CENTER CT
Chula Vista, CA 91911

Reassigned Medicare billing, California enrollment

NPI 1316445430 (773) 301-4896

Centro De Salud De La Comunidad De San Ysidro, Inc

0.8 mi

Federally Qualified Health Center (FQHC)

280 E ST
Chula Vista, CA 91910

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

NPI 1184135873 (619) 662-4100

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 91911 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

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 20

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

LINDA HELEN MARSHALL FNP-C

Nurse Practitioner (Family)