Doctor profile · Federal record

Dr. Carol Mei, M.D.

Hematology & Oncology Physician (CMS: Hematology/Oncology) · Hematology & Oncology Physician · Hollister, CA

  • NPI 1528041720
  • Accepts Medicare
  • 37 yrs in practice
  • Licensed in 2 states
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
890 Sunset Dr Ste A-2A
Hollister, CA 950235651
(781) 340-0735
fax (781) 331-6355
Mailing address
10800 Magdalena RD
Los Altos Hills, CA 940246439

Credentials & registration

NPPES · NUCC
NPI registered
November 2005 — 21 yrs on file
Profile last updated
June 4, 2021
Year of graduation
1989 — 37 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State licenses (2)
California #G70168 · Massachusetts #78172
Medicaid
MA #3153801

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1528041720. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
179
Distinct HCPCS
2
Medicare allowed
$22,769
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 109 58 $110
99214 Established patient office or other outpatient visit, 30-39 minutes 70 44 $154

In context: peer comparison

Among 1 peers in this city , average services per provider: 89. This provider delivers 2.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$141
Transactions
6
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
Merck Sharp & Dohme LLC 1 $29.12
SOBI, INC 1 $24.71
Dexcom, Inc. 1 $24.22
Boehringer Ingelheim Pharmaceuticals, Inc. 1 $22.68
Bayer Healthcare Pharmaceuticals Inc. 1 $20.90
PharmaEssentia USA Corporation 1 $19.25

By nature of payment

Food and Beverage
$141

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
17
Patients
0
Total drug cost
$330
Drug Type Claims Patients Total cost
Omeprazole Generic 17 0 $330

Frequently asked questions

Auto-generated from federal data
What is Dr. Carol Mei's medical specialty?
Dr. Carol Mei practices Hematology & Oncology Physician in Hollister, CA.
Where does Dr. Carol Mei practice?
Dr. Carol Mei practices at 890 Sunset Dr Ste A-2A, Hollister, CA 950235651. Office phone: 7813400735.
What is Dr. Carol Mei's NPI?
Dr. Carol Mei's National Provider Identifier (NPI) is 1528041720, issued by NPPES.
Does Dr. Carol Mei accept Medicare assignment?
Yes. Dr. Carol Mei accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Carol Mei commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.