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ROSA HYE-KYUNG WON M.D.
NPI 1952489718
Obstetrics & Gynecology - Maternal & Fetal Medicine in Walnut Creek, CA

Active since November 01, 2006PECOS Enrolled
1656 N CALIFORNIA BLVD, SUITE 300, WALNUT CREEK, CA 94596(925) 941-7955(925) 941-7986 Get Directions Write a Review

NPPES record last updated: April 29, 2009. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Rosa Hye-kyung Won M.d. NPPES

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

ROSA HYE-KYUNG WON M.D. (NPI 1952489718) is an individual maternal & fetal medicine provider in Walnut Creek, California, licensed in California (A68625) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of New York Medical College (1997).

NPPES Registry Identity

NPI1952489718
Entity TypeIndividualFemale
Primary Taxonomy207VM0101X
Provider Legal NameROSA HYE-KYUNG WONCredential: M.D.
Location Address1656 N CALIFORNIA BLVD, SUITE 300Walnut Creek, CA 94596-4180
Mailing AddressPo Box 9017Walnut Creek, CA 94598-0917 · (925) 952-2828 · Fax (925) 952-2850
Phone(925) 941-7955
Fax(925) 941-7986
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1997
Enumeration DateNovember 1, 2006
Last NPPES UpdateApril 29, 2009
✔ NPI 1952489718 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in CA · A68625
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
1656 N CALIFORNIA BLVD, Walnut Creek, CA 94596
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Other Identifiers 3

Medicaid00A686250CA
Medicare UPINH39339
Medicare PIN00A686253CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rosa Hye-kyung Won M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5193790665
PECOS Enrollment IDI20040827001142
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94596 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
$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 4

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

MRS. RACHAEL MARIE CABREIRA MSN-FNP-C
Nurse Practitioner (Family)
1656 N CALIFORNIA BLVD, 115
WALNUT CREEK, CA 94596
Contra Costa County (925) 941-7900
JUSTIN COLLINGHAM M.D.
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1656 N CALIFORNIA BLVD, SUITE 300
WALNUT CREEK, CA 94596
Contra Costa County (925) 937-5214
MRS. NANCY ELIZABETH COOK NP
Nurse Practitioner (Adult Health)
1656 N CALIFORNIA BLVD, SUITE 300
WALNUT CREEK, CA 94596
Contra Costa County (502) 417-4344
DR. RICHARD L WEINSTEIN M.D.
Internal Medicine
1656 N CALIFORNIA BLVD, SUITE 200
WALNUT CREEK, CA 94596
Contra Costa County (925) 952-2888

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 Rosa Won's NPI number?

The NPI number for Rosa Won is 1952489718. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Rosa Won located?

Rosa Won practices at 1656 N California Blvd Suite 300, Walnut Creek, CA 94596. The listed phone number is (925) 941-7955.

What is Rosa Won's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Rosa Won enrolled in Medicare?

Yes. Rosa Won is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Rosa Won was last updated on April 29, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.