Chiaching Wang, MD
Hematology (Internal Medicine) Physician · San Francisco, CA
Chiaching Wang, MD is a hematology (internal medicine) physician with a practice address in San Francisco, California, and NPI 1922260520, issued on Jun 26, 2008. Check the license (California A119101, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chiaching Wang
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- A119101 CA
Self-reported in NPPES; status is on the state search - Practice location
- 513 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 476-9363
- Enumerated
- Jun 26, 2008
- Record last updated
- Apr 30, 2026
- Medicare enrollment
- Enrolled (PECOS I20150505001224); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 175 in California → Look up another NPI →
Also registered at 513 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimiya Abtahi, DMDStudent in an Organized Health Care Education/Training Program1295397719
- Kemi Alabi, MDStudent in an Organized Health Care Education/Training Program1821857004
- Ivy Aslan, M.D.Specialist1346571833
- Su Aung, M.D.Infectious Disease Physician1649513805
- Jeanie Bhuller, D.O.Anesthesiology Physician1801020391
- Catherine Blebea, MDInternal Medicine Physician1134680531
Verify Chiaching Wang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A119101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
287 Medicare Part D claims for 38 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 29 claims were for opioids.
Most prescribed
- Ondansetron Hcl41 claims
- Dexamethasone24 claims
- Aprepitant14 claims
- Tagrisso14 claims
- Abiraterone Acetate13 claims
- Lamivudine Hbv13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- University OF California San FranciscoSan Francisco, CA
- University OF California Sfgh Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chiaching Wang among 175 hematology (internal medicine) physician records in California
Chiaching Wang, MD is one of 175 hematology (internal medicine) physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 51% of them.
- NPI issued2008 · 51% of these records are older, 43% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2005 · median 2006 among the 135 with a school on file
- Record last updated2026 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in California
There are 175 hematology (internal medicine) physician records in California.
All 175 in California → Every provider in San Francisco → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Alfred ChungSan Francisco, CA 941431417375627
- Debajyoti Datta, M.D.San Francisco, CA 941431093073090
- Annabel Frank, MDSan Francisco, CA 941431649774290
- Karin Gaensler, MDSan Francisco, CA 941431609830215
- Marina Heskel, MDSan Francisco, CA 941431184243313
- Andrew Leavitt, M.D.San Francisco, CA 941431952343113
- Gallia Levy, MD, PHDSan Francisco, CA 941431023271350
- Charles Linker, MDSan Francisco, CA 941431811951957
Common questions
What is Chiaching Wang, MD's NPI number?
Chiaching Wang, MD's National Provider Identifier (NPI) is 1922260520, issued on Jun 26, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Chiaching Wang, MD located?
The NPPES record lists a practice address at 513 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-9363. Providers update this record themselves, so call before visiting.
How can I verify Chiaching Wang, MD's license?
NPPES lists California license number A119101, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chiaching Wang, MD prescribe under Medicare Part D?
In 2024, Chiaching Wang, MD had 287 Medicare Part D claims for 38 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.
What is Chiaching Wang, MD's MIPS final score?
The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.