NPPES file of Aug 9, 2026

Ylayaly Katherine Bianco, MD

Maternal & Fetal Medicine Physician · Palo Alto, CA

Ylayaly Katherine Bianco, MD is a maternal & fetal medicine physician with a practice address in Palo Alto, California, and NPI 1558421768, issued on Dec 11, 2006. Check the license (California A88919, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558421768
Name
Ylayaly Katherine Bianco
Credential
MD
Primary taxonomy
Maternal & Fetal Medicine Physician 207VM0101X
License number
A88919 CA
Self-reported in NPPES; status is on the state search
Practice location
725 Welch RD, Palo Alto, CA 94304
Phone
(650) 497-8000
Enumerated
Dec 11, 2006
Record last updated
Apr 19, 2024
Medicare enrollment
Enrolled (PECOS I20041015000937); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 725 Welch RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Shayda Abadi, NPNurse Practitioner1316745540
  2. Natasha AbadillaStudent in an Organized Health Care Education/Training Program1194306928
  3. Alexandra Abbott, MDPediatrics Physician1760018675
  4. Steven Abboud, MDAnesthesiology Physician1619364908
  5. Ali Abdelhafiz Abdelsamea, MDPediatrics Physician1699390104
  6. Alireza Abdollah Shamshirsaz, M.D.Obstetrics & Gynecology Physician1881804235

Verify Ylayaly Katherine Bianco in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A88919
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Lpch Medical Group Div OF LucilePalo Alto, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Maternal & Fetal Medicine Physician providers in California

There are 343 maternal & fetal medicine physician records in California.

Other maternal & fetal medicine physician records in California

  1. Joanna Adamczak, M.D.San Diego, CA1447428420
  2. Rebecca Adami, M.D.San Diego, CA1992149447
  3. Michelle Adams, M.D.Oakland, CA1326058991
  4. Yalda Afshar, M.D., PH.D.Los Angeles, CA1629497763
  5. Paola Aghajanian, M.D.Los Angeles, CA1336324334
  6. Jennifer Ahn, M.D.San Diego, CA1972673879
  7. Cheryl Albuquerque, M.D.San Jose, CA1093863938
  8. Marwan Ali, MD, MBASacramento, CA1265696660
  9. Kevin Amaya, D.O.Harbor City, CA1215193495
  10. Odul Amburgey, M.D.San Jose, CA1619196466

Common questions

What is Ylayaly Katherine Bianco, MD's NPI number?

Ylayaly Katherine Bianco, MD's National Provider Identifier (NPI) is 1558421768, issued on Dec 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ylayaly Katherine Bianco, MD located?

The NPPES record lists a practice address at 725 Welch RD, Palo Alto, CA, 94304. Phone: (650) 497-8000. Providers update this record themselves, so call before visiting.

How can I verify Ylayaly Katherine Bianco, MD's license?

NPPES lists California license number A88919, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.