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Pathology

Maria Inmaculada Cobos Sillero, MD

Works at hospitals in Stanford, CA · California

Summary

Dr. Maria Inmaculada Cobos Sillero, MD is a pathologist at 300 Pasteur Dr, Stanford, CA 94305. Phone: (650) 723-4000. Accepts Medicare assignment. In 2024, Maria Inmaculada Cobos Sillero had 63 Original Medicare patients and 237 services. NPI 1598051427. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Pathologist (Medicare lists Pathology)
  • Address: 300 Pasteur Dr, Stanford, CA 94305 · Directions
  • Phone: (650) 723‑4000
  • Medicare: Accepts Medicare assignment
  • Hospital: Stanford Health Care
  • Group practice: Stanford Health Care
  • Medical school: graduated 1996 (30 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Maria Inmaculada Cobos Sillero, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maria Inmaculada Cobos Sillero accept Medicare assignment?
Yes. Medicare's clinician data says Maria Inmaculada Cobos Sillero accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Maria Inmaculada Cobos Sillero see?
In 2024, CMS data shows 63 Original Medicare patients and 237 services for Maria Inmaculada Cobos Sillero. This counts Original Medicare only and measures volume, not quality.
What is Maria Inmaculada Cobos Sillero's NPI number?
1598051427. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Maria Inmaculada Cobos Sillero, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients63
Services billed to Medicare237
Different services or procedures15
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Special stained specimen slides to examine tissue, each additional procedure (88341)69 services
  2. Pathology examination of tissue using a microscope, moderately high complexity (88307)50 services
  3. Special stained specimen slides to examine tissue, initial procedure (88342)29 services
  4. Pathology examination of tissue using a microscope, intermediate complexity (88305)21 services
  5. Pathology examination of specimen during surgery, first tissue block (88331)14 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis44%
  • Anxiety37%
  • Diabetes33%
  • Stroke or mini-stroke33%

Hospitals where Maria Inmaculada Cobos Sillero works

Medicare's Facility Affiliation Data lists Maria Inmaculada Cobos Sillero at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Maria Inmaculada Cobos Sillero is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Maria Inmaculada Cobos Sillero as a member of this group (CMS data updated October 2, 2026).

  • Stanford Health Care3,122 clinicians in the group

Specialties

Find other Pathology doctors in California →

Other pathologists in Stanford

Clinicians with the same Medicare primary specialty in Stanford, CA — not a recommendation.

All pathologists in Stanford →

Other clinicians in Stanford Health Care

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1598051427
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians