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ROSSMOOR MEDICAL ASSOCIATES INC
NPI 1700954914
Internal Medicine in Walnut Creek, CA

Active since December 04, 2006CLIA 05D1053025 · Waiver
1210 ROSSMOOR PKWY, WALNUT CREEK, CA 94595(925) 933-1210(925) 933-2051 Get Directions Write a Review

NPPES record last updated: July 28, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Rossmoor Medical Associates Inc NPPES

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

ROSSMOOR MEDICAL ASSOCIATES INC (NPI 1700954914) is a healthcare organization registered as an internal medicine in Walnut Creek, California and active in the NPI registry since December 2006. The organization holds a CLIA Waiver certificate valid through April 10, 2028 and lists Edgar Y Kwan, President, as its authorized official.

NPPES Registry Identity

NPI1700954914
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameROSSMOOR MEDICAL ASSOCIATES INC
Location Address1210 ROSSMOOR PKWYWalnut Creek, CA 94595-2501
Mailing Address1210 Rossmoor PkwyWalnut Creek, CA 94595-2501 · (925) 933-1210 · Fax (925) 933-2051
Phone(925) 933-1210
Fax(925) 933-2051
Organization SubpartNo
Authorized OfficialEdgar Y KwanPresident · (925) 933-1210
Enumeration DateDecember 4, 2006
Last NPPES UpdateJuly 28, 2021
NPPES CertifiedJuly 28, 2021
✔ NPI 1700954914 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1210 ROSSMOOR PKWY, Walnut Creek, CA 94595
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rossmoor Medical Associates Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Rossmoor Medical Associates Inc, which bills Medicare for the services they deliver. Of these, 5 practice at this address. They are listed nearest first.

Clinicians, nearest first (8)

Epifanio Deleon, M.D.
Internal Medicine
NPI 1124194907
1210 ROSSMOOR PKWY
Walnut Creek, CA 94595
(925) 933-1210
✔ PECOSSame address
Nie Coleen Ebajay, FNP-C
Nurse Practitioner
NPI 1811780034
1210 ROSSMOOR PKWY
Walnut Creek, CA 94595
(925) 933-1210
✔ PECOS✔ Accepts MedicareSame address
Jonathan Frank, M.D.
Internal Medicine
NPI 1215003090
1210 ROSSMOOR PKWY
Walnut Creek, CA 94595
(925) 933-1210
✔ PECOSSame address
Elizabeth Seet, M.D.
Internal Medicine
NPI 1497821276
1210 ROSSMOOR PKWY
Walnut Creek, CA 94595
(925) 933-1210
✔ PECOSSame address
Pedram Taher, M.D
Internal Medicine
NPI 1669625125
1210 ROSSMOOR PKWY
Walnut Creek, CA 94595
(925) 933-1210
✔ PECOS✔ Accepts MedicareSame address
Harneet Chopra, MD
Internal Medicine
NPI 1457581597
2161 SHATTUCK AVE SUITE 303
Berkeley, CA 94704
(510) 766-0342
✔ PECOS✔ Accepts Medicare11 mi
Ann Nguyen Traxler, M.D.
Internal Medicine
NPI 1376770933
1510 4TH ST STE 1
Berkeley, CA 94710
(510) 525-8980
✔ PECOS✔ Accepts Medicare13 mi
Christine Seeley, NURSE PRACTITIONER
Nurse Practitioner
NPI 1922519784
27206 CALAROGA AVE STE 205
Hayward, CA 94545
(510) 670-1111
✔ PECOS✔ Accepts Medicare17 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D1053025

Rossmoor Medical Associates Inc · Walnut Creek, CA
Active · expires Apr 10, 2028
CLIA Number05D1053025
Laboratory TypePhysician Office
Certificate Effective DateApril 11, 2026
Certificate Expiration DateApril 10, 2028
Laboratory DirectorPedram Taher
Laboratory Phone(925) 933-1210
Laboratory LocationRossmoor Medical Associates Inc1210 Rossmoor Parkway, Walnut Creek, CA 94595
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Rossmoor Medical Associates Inc's NPI number?

The NPI number for Rossmoor Medical Associates Inc is 1700954914. It was assigned to this organization in the NPPES registry on December 4, 2006.

Where is Rossmoor Medical Associates Inc located?

Rossmoor Medical Associates Inc is located at 1210 Rossmoor Pkwy, Walnut Creek, CA 94595. The listed phone number is (925) 933-1210.

What is Rossmoor Medical Associates Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Rossmoor Medical Associates Inc enrolled in Medicare?

Yes. Rossmoor Medical Associates Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Rossmoor Medical Associates Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 2 Medicare specialties reassign their Medicare billing to Rossmoor Medical Associates Inc. A 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 the clinician's services. The largest specialties are Internal Medicine (6) and Nurse Practitioner (2). Of these, 5 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Rossmoor Medical Associates Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D1053025) is associated with this NPI, valid through April 10, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Rossmoor Medical Associates Inc was last updated on July 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.