Doctor profile · Federal record

Dr. Chiaching Wang, MD

Internal Medicine Physician (CMS: Hematology/Oncology) · San Francisco, CA

  • NPI 1922260520
  • Accepts Medicare
  • MIPS 85.5 / 100 · 2023
  • 21 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
513 Parnassus Ave
San Francisco, CA 94143
(415) 476-9363

Credentials & registration

NPPES · NUCC
NPI registered
June 2008 — 18 yrs on file
Profile last updated
August 22, 2018
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Rhode Island #MD13155

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1922260520. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
139
Distinct HCPCS
3
Medicare allowed
$16,287
HCPCS Description Services Patients Avg allowed
46601 Diagnostic exam of anus with magnification and chemical agent enhancement using an endoscope 96 81 $105
46607 Biopsy of anus with magnification and chemical agent enhancement using an endoscope 31 27 $139
46910 Simple destruction of growth of anus 12 12 $158

In context: peer comparison

Among 236 peers in this city , average services per provider: 93. This provider delivers 1.5× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
152
Patients
0
Total drug cost
$921,785
Drug Type Claims Patients Total cost
Ondansetron Hcl Generic 41 0 $593
Dexamethasone Generic 27 0 $214
Pomalyst (Pomalidomide) Brand 19 0 $461,567
Xarelto (Rivaroxaban) Brand 16 0 $15,474
Tagrisso (Osimertinib Mesylate) Brand 13 0 $229,004
Xtandi (Enzalutamide) Brand 13 0 $208,752
Olanzapine Generic 12 0 $226
Aprepitant Generic 11 0 $5,955

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Chiaching Wang's medical specialty?
Dr. Chiaching Wang practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Chiaching Wang practice?
Dr. Chiaching Wang practices at 513 Parnassus Ave, San Francisco, CA 94143. Office phone: 4154769363.
What is Dr. Chiaching Wang's NPI?
Dr. Chiaching Wang's National Provider Identifier (NPI) is 1922260520, issued by NPPES.
Does Dr. Chiaching Wang accept Medicare assignment?
Yes. Dr. Chiaching Wang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chiaching Wang commonly perform?
Top Medicare-reported procedures in 2023: Diagnostic exam of anus with magnification and chemical agent enhancement using an endoscope (HCPCS 46601); Biopsy of anus with magnification and chemical agent enhancement using an endoscope (HCPCS 46607); Simple destruction of growth of anus (HCPCS 46910). Source: CMS Medicare Physician & Other Practitioners file.