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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SILVIA BASTEA HAMILTON MD
NPI 1508472432
Obstetrics & Gynecology in Union City, CA

Active since September 16, 2020PECOS Enrolled
3555 WHIPPLE RD, UNION CITY, CA 94587(510) 675-4010 Get Directions Write a Review

NPPES record last updated: August 15, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Aug 15, 2026, Sep 16, 2020 (2 updates tracked since 2020).

About Silvia Bastea Hamilton Md NPPES

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

SILVIA BASTEA HAMILTON MD (NPI 1508472432) is an individual obstetrics & gynecology provider in Union City, California, licensed in California (A210555) and active in the NPI registry since September 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1508472432
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameSILVIA BASTEA HAMILTONCredential: MD
Location Address3555 WHIPPLE RDUnion City, CA 94587-1507
Mailing Address1319 Punahou St Ste 824Honolulu, HI 96826-1032
Phone(510) 675-4010
Sole ProprietorNo
Enumeration DateSeptember 16, 2020
Last NPPES UpdateAugust 15, 20262 updates tracked since enumeration
NPPES CertifiedAugust 15, 2026
✔ NPI 1508472432 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A210555
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.
3555 WHIPPLE RD, Union City, CA 94587
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Silvia Bastea Hamilton Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94587 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 20

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

KETKI P MARATHE
Physical Therapist
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (510) 675-4010
ALEJANDRA ANDRADE
Marriage & Family Therapist
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (650) 834-1393
KAISER FOUNDATION HEALTH PLAN INC
Pharmacy (Community/Retail Pharmacy)
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (510) 675-3302
MS. ROSE GUGGENHEIM MFT
Counselor (Addiction (Substance Use Disorder))
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (510) 675-4541
JIANGYAN DU PHARMD
Pharmacist
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (510) 675-3080
MICHAEL DAVID SANDS M.D.
Psychiatry & Neurology (Psychiatry)
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (510) 454-1000
DR. DAVID JESSE KERNER PSY.D.
Psychologist (Clinical)
3555 WHIPPLE RD, BUILDING C
UNION CITY, CA 94587
Alameda County (510) 675-3080
LINDA LOUISE JOOST PT
Physical Therapist
3555 WHIPPLE RD
UNION CITY, CA 94587
Alameda County (510) 675-4289

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 Silvia Hamilton's NPI number?

The NPI number for Silvia Hamilton is 1508472432. It was assigned to this individual provider in the NPPES registry on September 16, 2020.

Where is Silvia Hamilton located?

Silvia Hamilton practices at 3555 Whipple Rd, Union City, CA 94587. The listed phone number is (510) 675-4010.

What is Silvia Hamilton's specialty?

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

Is Silvia Hamilton enrolled in Medicare?

Yes. Silvia Hamilton is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Silvia Hamilton was last updated on August 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 47 days 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.