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GINNY WENJING BAO
NPI 1801383286
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Francisco, CA

Active since April 20, 2018PECOS EnrolledAccepts Medicare Assignment
1100 VAN NESS AVE, SAN FRANCISCO, CA 94109(415) 600-0110(415) 558-7038 Get Directions Write a Review

NPPES record last updated: January 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ginny Wenjing Bao NPPES

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

GINNY WENJING BAO (NPI 1801383286) is an individual endocrinology, diabetes & metabolism provider in San Francisco, California, licensed in California (A166257) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS and is a graduate of Other.

NPPES Registry Identity

NPI1801383286
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameGINNY WENJING BAO
Location Address1100 VAN NESS AVESan Francisco, CA 94109-6978
Mailing AddressPo Box 276950Sacramento, CA 95827-6950 · (415) 600-0110 · Fax (415) 558-7038
Phone(415) 600-0110
Fax(415) 558-7038
Sole ProprietorNo
Medical School CMSOther
Enumeration DateApril 20, 2018
Last NPPES UpdateJanuary 15, 2025
NPPES CertifiedJanuary 15, 2025
✔ NPI 1801383286 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A166257
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
1100 VAN NESS AVE, San Francisco, CA 94109
Open in Google Maps ↗

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

Ginny Wenjing Bao 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 ID5193102267
PECOS Enrollment IDI20220510002447
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

2

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

Pacific Inpatient Medical Group
Same address
Internal Medicine
1101 VAN NESS AVE
San Francisco, CA 94109
  • Reassigned Medicare billing, California enrollment
  • 213 clinicians in this Medicare group
NPI 1447447248 (415) 531-9047
Sutter Bay Medical Foundation
15 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180

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 94109 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
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
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.

CHIALIN LEE PA-C
Physician Assistant
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 600-1151
JACQUELYN GEERTSEMA
Registered Nurse (Critical Care Medicine)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (559) 250-5852
DR. JAMES FREDERICK VERREES M.D.
Obstetrics & Gynecology
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 750-7050
DR. JACQUELINE ELIZABETH SUMMERS STROMBERG MD
Psychiatry & Neurology (Neurology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 600-7880
DR. MATTHEW G MACDOUGALL M.D.
Neurological Surgery
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 600-0528
DR. WARREN TACKHOON KIM M.D., PH.D.
Radiology (Vascular & Interventional Radiology)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 600-0528
SHEENA PILLAI
Physical Medicine & Rehabilitation
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 600-7886
KATRINA ELIZABETH MADDOX FNP
Nurse Practitioner (Family)
1100 VAN NESS AVE
SAN FRANCISCO, CA 94109
San Francisco County (415) 600-1151

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 Ginny Bao's NPI number?

The NPI number for Ginny Bao is 1801383286. It was assigned to this individual provider in the NPPES registry on April 20, 2018.

Where is Ginny Bao located?

Ginny Bao practices at 1100 Van Ness Ave, San Francisco, CA 94109. The listed phone number is (415) 600-0110.

What is Ginny Bao's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Ginny Bao enrolled in Medicare?

Yes. Ginny Bao is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ginny Bao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ginny Bao reassigns Medicare benefits to 2 organizations: Pacific Inpatient Medical Group (San Francisco, CA) and Sutter Bay Medical Foundation (Orinda, CA). Each 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 Ginny Bao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ginny Bao was last updated on January 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.