NPPES file of Aug 9, 2026

Kathryne Ann Sanserino, MD

Maternal & Fetal Medicine Physician · Palo Alto, CA

Kathryne Ann Sanserino, MD is a maternal & fetal medicine physician with a practice address in Palo Alto, California, and NPI 1447665948, issued on Jun 24, 2014. Check the license (California A167402, 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 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1447665948
Name
Kathryne Ann Sanserino
Credential
MD
Primary taxonomy
Maternal & Fetal Medicine Physician 207VM0101X
License numbers
A167402 CA
MT206814 PA
Self-reported in NPPES; status is on the state search
Practice location
725 Welch RD, Palo Alto, CA 94304
Phone
(650) 497-8000
Enumerated
Jun 24, 2014
Record last updated
Apr 26, 2024
Medicare enrollment
Enrolled (PECOS I20200727001001); accepts Medicare assignment
Medical or professional school
Southern Illinois University School Of Medicine, 2014
Telehealth
Offers telehealth (CMS)
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 Kathryne Ann Sanserino in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A167402
    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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56% fewer Medicare Part D claims than the average maternal & fetal medicine physician in 2024

18 Medicare Part D claims, against an average of 41 among the 353 providers of this specialty who prescribed in Part D.

  1. Kathryne Sanserino18
  2. Specialty average41

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score74.3
  2. Costout of 100 · 30%44.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

One hospital affiliation

  1. Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Kathryne Ann Sanserino among 343 maternal & fetal medicine physician records in California

Kathryne Ann Sanserino, MD is one of 343 maternal & fetal medicine physician records with a practice address in California. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 84% of them.

  • NPI issued2014 · 84% of these records are older, 13% newer
  • In a Medicare fileYes · 61% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2014 · median 2003 among the 181 with a school on file
  • Record last updated2024 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Maternal & Fetal Medicine Physician providers in California

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

The 8 maternal & fetal medicine physician records with the nearest ZIP codes

  1. Natali Aziz, MDPalo Alto, CA 943041477518371
  2. Ylayaly Bianco, MDPalo Alto, CA 943041558421768
  3. Yair Blumenfeld, MDPalo Alto, CA 943041518077726
  4. Sylvie Blumstein, MDPalo Alto, CA 943041033296983
  5. Mark Boddy, MDPalo Alto, CA 943041518059880
  6. Laura Brodzinsky, MDPalo Alto, CA 943041073655072
  7. Yasser El-Sayed, MDPalo Alto, CA 943041548302482
  8. Luis Garcia, MDPalo Alto, CA 943041861542664

Common questions

What is Kathryne Ann Sanserino, MD's NPI number?

Kathryne Ann Sanserino, MD's National Provider Identifier (NPI) is 1447665948, issued on Jun 24, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Kathryne Ann Sanserino, 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 Kathryne Ann Sanserino, MD's license?

NPPES lists California license number A167402, 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.

How much does Kathryne Ann Sanserino, MD prescribe under Medicare Part D?

In 2024, Kathryne Ann Sanserino, MD had 18 Medicare Part D claims; the average among maternal & fetal medicine physician prescribers was 41. Part D covers Medicare prescriptions only.

What is Kathryne Ann Sanserino, MD's MIPS final score?

The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.