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Hematology/Oncology

Carol T. Mei, MD

Works at hospitals in Hollister, CA · Salinas, CA · California

Summary

Dr. Carol T. Mei, MD is a hematologist-oncologist at 911 Sunset Dr, Hollister, CA 95023. Accepts Medicare assignment. In 2024, Carol T. Mei had 90 Original Medicare patients and 361 services. NPI 1528041720. 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: Hematologist-oncologist (Medicare lists Hematology/Oncology)
  • Address: 911 Sunset Dr, Hollister, CA 95023 · Directions
  • Medicare: Accepts Medicare assignment
  • Hospitals: Hazel Hawkins Memorial Hospital, Salinas Valley Health Medical Center
  • Group practice: Hazel Hawkins Memorial Hospital
  • Medical school: Stanford University School Of Medicine · graduated 1989 (37 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Carol T. Mei, 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 Carol T. Mei accept Medicare assignment?
Yes. Medicare's clinician data says Carol T. Mei 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 Carol T. Mei see?
In 2024, CMS data shows 90 Original Medicare patients and 361 services for Carol T. Mei. This counts Original Medicare only and measures volume, not quality.
What is Carol T. Mei's NPI number?
1528041720. 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 Carol T. Mei, 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 patients90
Services billed to Medicare361
Different services or procedures15
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)118 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)99 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)13 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 cholesterol75%
  • High blood pressure73%
  • Arthritis53%
  • Diabetes46%
  • Chronic kidney disease38%
  • Depression29%

Hospitals where Carol T. Mei works

Medicare's Facility Affiliation Data lists Carol T. Mei 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.

Practice locations

Addresses where Carol T. Mei is enrolled with Medicare (CMS data updated October 2, 2026).

  • 911 Sunset DrHollister, CA 95023

Group practices

Medicare enrollment lists Carol T. Mei as a member of this group (CMS data updated October 2, 2026).

  • Hazel Hawkins Memorial Hospital52 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All hematologist-oncologists in California →

Other clinicians in Hazel Hawkins Memorial Hospital

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

Clinician information

CredentialMD
Medical schoolStanford University School Of Medicine
Graduation year1989 (37 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528041720
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