Doctor profile · Federal record

Dr. Nancy Hsieh, PA-C

Medical Physician Assistant (CMS: Physician Assistant) · Menlo Park, CA

  • NPI 1750665444
  • Accepts Medicare
  • MIPS 100.0 / 100 · 2023
  • 15 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
321 Middlefield RD, Suite 245
Menlo Park, CA 940253500
(650) 326-7222
fax (650) 326-7332

Credentials & registration

NPPES · NUCC
NPI registered
September 2011 — 15 yrs on file
Profile last updated
April 11, 2013
Year of graduation
2011 — 15 yrs since
Specialty taxonomy
363AM0700X — NUCC code
State license (1)
California #PA22452

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1750665444. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,419
Distinct HCPCS
10
Medicare allowed
$117,898
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 383 212 $91
17003 Destruction of precancer skin growth, 2-14 growths 242 43 $7
99203 New patient office or other outpatient visit, 30-44 minutes 133 133 $112
99212 Established patient office or other outpatient visit, 10-19 minutes 130 112 $58
11102 Biopsy of related skin growth, first growth 123 90 $107
17000 Destruction of precancer skin growth, 1 growth 114 69 $52
99204 New patient office or other outpatient visit, 45-59 minutes 51 51 $162
11103 Biopsy of related skin growth, each additional growth 48 29 $55
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm 39 28 $174
99214 Established patient office or other outpatient visit, 30-39 minutes 39 39 $128

In context: peer comparison

Among 1 peers in this city , average services per provider: 94. This provider delivers 15× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
213
Patients
182
Total drug cost
$3,587
Drug Type Claims Patients Total cost
Cephalexin Generic 96 88 $692
Gentamicin Sulfate Generic 73 66 $2,532
Doxycycline Hyclate Generic 17 14 $153
Triamcinolone Acetonide Generic 14 14 $80
Mupirocin Generic 13 0 $130

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Nancy Hsieh's medical specialty?
Dr. Nancy Hsieh practices Medical Physician Assistant in Menlo Park, CA.
Where does Dr. Nancy Hsieh practice?
Dr. Nancy Hsieh practices at 321 Middlefield RD, Menlo Park, CA 940253500. Office phone: 6503267222.
What is Dr. Nancy Hsieh's NPI?
Dr. Nancy Hsieh's National Provider Identifier (NPI) is 1750665444, issued by NPPES.
Does Dr. Nancy Hsieh accept Medicare assignment?
Yes. Dr. Nancy Hsieh accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Hsieh commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.