BONNIE DWYER M.D.
NPI 1164564100
Obstetrics & Gynecology - Maternal & Fetal Medicine in Mountain View, CA

Q: What is Bonnie Dwyer's NPI number?

The NPI number for Bonnie Dwyer is 1164564100. It was assigned to this individual provider in the NPPES registry on February 13, 2007.

Q: What is Bonnie Dwyer's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Bonnie Dwyer was last updated on December 2, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 February 13, 2007PECOS EnrolledAccepts Medicare Assignment

701 E EL CAMINO REAL, MOUNTAIN VIEW, CA 94040(650) 934-7616 Get Directions Write a Review

NPPES record last updated: December 2, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Bonnie Dwyer M.d. NPPES

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

BONNIE DWYER M.D. (NPI 1164564100) is an individual maternal & fetal medicine provider in Mountain View, California, licensed in California (A71242) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (1998).

NPPES Registry Identity

NPI1164564100

Entity TypeIndividualFemale

Primary Taxonomy207VM0101X

Provider Legal NameBONNIE DWYERCredential: M.D.

Location Address701 E EL CAMINO REALMountain View, CA 94040-2833

Mailing Address2350 W El Camino Real, 2nd FloorMountain View, CA 94040-6201

Phone(650) 934-7616

Sole ProprietorNo

Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 1998

Enumeration DateFebruary 13, 2007

Last NPPES UpdateDecember 2, 2011

✔ NPI 1164564100 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207VM0101X

License✔ Licensed in CA · A71242

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.

Also ListedObstetrics & Gynecology · ObstetricsTaxonomy 207VX0000X · License A71242 (CA)

701 E EL CAMINO REAL, Mountain View, CA 94040

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Other Identifiers 1

Medicare UPINI12717CA

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

Bonnie Dwyer 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 ID244204493

PECOS Enrollment IDI20040823001481

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 Bonnie Dwyer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Santa Clara

2.5 mi

Federally Qualified Health Center (FQHC)

660 S FAIR OAKS AVE
Sunnyvale, CA 94086

Reassigned Medicare billing, California enrollment
2,460 clinicians in this Medicare group

NPI 1336326974 (408) 885-5000

Sutter Bay Medical Foundation

6.8 mi

Multi-Specialty

795 EL CAMINO REAL
Palo Alto, CA 94301

Reassigned Medicare billing, California enrollment
4,479 clinicians in this Medicare group

NPI 1013950807 (650) 321-4121

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 94040 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

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

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.

JULIA A CRONIN MD

Allergy & Immunology (Allergy)