STEPHANIE SINGSON ROSS
NPI 1699119081
Internal Medicine in Orinda, CA

Q: What is Stephanie Ross's NPI number?

The NPI number for Stephanie Ross is 1699119081. It was assigned to this individual provider in the NPPES registry on April 29, 2013. The provider is also known as Dr. Stephanie Valencia Singson M.D..

Q: What is Stephanie Ross's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Stephanie Ross was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 April 29, 2013PECOS EnrolledAccepts Medicare Assignment

12 CAMINO ENCINAS, ORINDA, CA 94563(510) 204-8189(510) 506-7724 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 11, 2022, Jan 25, 2021, Mar 23, 2018 (3 updates tracked since 2018).

On this page

About Stephanie Singson Ross NPPES

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

STEPHANIE SINGSON ROSS (NPI 1699119081) is an individual internal medicine provider in Orinda, California, licensed in California (A136701) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2013).

NPPES Registry Identity

NPI1699119081

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameSTEPHANIE SINGSON ROSS

Location Address12 CAMINO ENCINASOrinda, CA 94563-3304

Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 204-8189 · Fax (510) 506-7724

Phone(510) 204-8189

Fax(510) 506-7724

Sole ProprietorNo

Medical School CMSGeorge Washington University School Of MedicineGraduated 2013

Enumeration DateApril 29, 2013

Last NPPES UpdateFebruary 11, 20223 updates tracked since enumeration

NPPES CertifiedFebruary 11, 2022

✔ NPI 1699119081 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A136701

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.

12 CAMINO ENCINAS, Orinda, CA 94563

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Other Names 1

Professional Name (2)Dr. Stephanie Valencia Singson M.d.

Other Identifiers 1

OtherA136701CA · State Medical License

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

Stephanie Singson Ross 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 ID7618279480

PECOS Enrollment IDI20160614000896

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 Reassignment

Medicare enrollment records show Stephanie Ross reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation

Same address

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.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

89 services61 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

49 services34 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

39 services39 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94563 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.

OMEED ATEFI DO

Family Medicine

12 CAMINO ENCINAS
ORINDA, CA 94563

Contra Costa County (510) 204-8189

FREDERICK SEWOONG OH M.D.

Family Medicine

12 CAMINO ENCINAS
ORINDA, CA 94563

Contra Costa County (510) 204-8180

INGRID LINNEA LARSSON M.D.

Internal Medicine

12 CAMINO ENCINAS
ORINDA, CA 94563

Contra Costa County (510) 204-8166

JILL D FOLEY M.D.

Obstetrics & Gynecology

12 CAMINO ENCINAS, SUITE 15
ORINDA, CA 94563

Contra Costa County (925) 254-9000

ROGER M ILIFF M.D.

Family Medicine

12 CAMINO ENCINAS
ORINDA, CA 94563

Contra Costa County (510) 204-8180

CHRISTINE S TSANG N.P.

Nurse Practitioner

12 CAMINO ENCINAS
ORINDA, CA 94563

Contra Costa County (510) 204-8171

DR. JOHN WYATT CARRIGG MD

Otolaryngology

12 CAMINO ENCINAS, SUITE 14
ORINDA, CA 94563

Contra Costa County (925) 254-6710

WAI F. YEUNG, M.D., INC

Internal Medicine

12 CAMINO ENCINAS, SUITE 6
ORINDA, CA 94563

Contra Costa County (925) 254-5606

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 Stephanie Ross's NPI number?

The NPI number for Stephanie Ross is 1699119081. It was assigned to this individual provider in the NPPES registry on April 29, 2013. The provider is also known as Dr. Stephanie Valencia Singson M.D..

Where is Stephanie Ross located?

Stephanie Ross practices at 12 Camino Encinas, Orinda, CA 94563. The listed phone number is (510) 204-8189.

What is Stephanie Ross's specialty?

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

Is Stephanie Ross enrolled in Medicare?

Yes. Stephanie Ross 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 organization bills Medicare for Stephanie Ross's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Ross reassigns Medicare benefits to Sutter Bay Medical Foundation (Orinda, CA). The 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 Stephanie Ross'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 Stephanie Ross was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.