Doctor profile · Federal record

Dr. Neil Markus, DO

Emergency Medicine Physician (CMS: Emergency Medicine) · Vallejo, CA

  • NPI 1124106950
  • Accepts Medicare
  • 28 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
975 Sereno Dr
Vallejo, CA 945892441
(707) 651-1000
Mailing address
1800 Harrison St Fl 7
Oakland, CA 946123466

Credentials & registration

NPPES · NUCC
NPI registered
November 2006 — 20 yrs on file
Profile last updated
December 20, 2021
Year of graduation
1998 — 28 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
California #20A8151
Medicaid
CA #00AX81510

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1124106950. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
51
Distinct HCPCS
2
Medicare allowed
$8,160
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 32 32 $181
99284 Emergency department visit with moderate level of medical decision making 19 19 $125

In context: peer comparison

Among 17 peers in Vallejo Emergency Medicine Physician, average services per provider: 98. This provider delivers 0.5× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
126
Patients
126
Total drug cost
$1,502
Drug Type Claims Patients Total cost
Meclizine Hcl Generic 26 26 $521
Cephalexin Generic 19 19 $186
Ciprofloxacin Hcl Generic 19 19 $172
Ondansetron Odt (Ondansetron) Brand 18 18 $126
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 11 11 $240
Furosemide Generic 11 11 $81
Potassium Chloride Generic 11 11 $106
Prednisone Generic 11 11 $70

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Neil Markus's medical specialty?
Dr. Neil Markus practices Emergency Medicine Physician in Vallejo, CA.
Where does Dr. Neil Markus practice?
Dr. Neil Markus practices at 975 Sereno Dr, Vallejo, CA 945892441. Office phone: 7076511000.
What is Dr. Neil Markus's NPI?
Dr. Neil Markus's National Provider Identifier (NPI) is 1124106950, issued by NPPES.
Does Dr. Neil Markus accept Medicare assignment?
Yes. Dr. Neil Markus accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Neil Markus commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.