Doctor profile · Federal record

Dr. Nathan Bornstein, M.D.

Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · San Carlos, CA

  • NPI 1174783773
  • Accepts Medicare
  • 18 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
301 Industrial RD
San Carlos, CA 94070
(650) 596-4100
Mailing address
325 Distel Cir
Los Altos, CA 940221408

Credentials & registration

NPPES · NUCC
NPI registered
June 2008 — 18 yrs on file
Profile last updated
May 29, 2020
Year of graduation
2008 — 18 yrs since
Specialty taxonomy
207P00000X — NUCC code
State licenses (2)
California #A116154 · Connecticut #NA

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1174783773. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
411
Distinct HCPCS
8
Medicare allowed
$52,256
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 129 124 $153
99204 New patient office or other outpatient visit, 45-59 minutes 86 86 $198
99213 Established patient office or other outpatient visit, 20-29 minutes 49 49 $109
99203 New patient office or other outpatient visit, 30-44 minutes 32 32 $134
81003 Automated urinalysis test 31 30 $2
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen 28 28 $50
87637 Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus 28 28 $140
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 28 28 $16

In context: peer comparison

Among 2 peers in this city , average services per provider: 56. This provider delivers 7.3× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
158
Patients
156
Total drug cost
$2,629
Drug Type Claims Patients Total cost
Doxycycline Monohydrate Generic 35 34 $435
Cefadroxil Generic 30 30 $254
Lagevrio (Eua) (Molnupiravir) Brand 19 19 $1,093
Azithromycin Generic 18 18 $109
Paxlovid (Eua) (Nirmatrelvir/Ritonavir) Brand 17 17 $177
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 13 13 $393
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 13 13 $124
Prednisone Generic 13 12 $44

Frequently asked questions

Auto-generated from federal data
What is Dr. Nathan Bornstein's medical specialty?
Dr. Nathan Bornstein practices Emergency Medicine Physician in San Carlos, CA.
Where does Dr. Nathan Bornstein practice?
Dr. Nathan Bornstein practices at 301 Industrial RD, San Carlos, CA 94070. Office phone: 6505964100.
What is Dr. Nathan Bornstein's NPI?
Dr. Nathan Bornstein's National Provider Identifier (NPI) is 1174783773, issued by NPPES.
Does Dr. Nathan Bornstein accept Medicare assignment?
Yes. Dr. Nathan Bornstein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathan Bornstein commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.