Mack Wu, DO
Family Medicine Physician · Ukiah, CA
Mack Wu, DO is a family medicine physician with a practice address in Ukiah, California, and NPI 1013777804, issued on Mar 20, 2024. Check the license (California 20A24443, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mack Wu
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A24443 CA
Self-reported in NPPES; status is on the state search - Practice location
- 260 Hospital Dr Ste 102, Ukiah, CA 95482
- Phone
- (707) 467-3123
- Enumerated
- Mar 20, 2024
- Record last updated
- Aug 1, 2025
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 260 Hospital Dr Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bruce Hirshman, D.O.Pain Medicine (Anesthesiology) Physician1790706000
Verify Mack Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A24443Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
68 Medicare Part D claims for 19 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Mack Wu among 17,133 family medicine physician records in California
Mack Wu, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 99% of them.
- NPI issued2024 · 99% of these records are older, under 1% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 family medicine physician records list a practice address in Ukiah
They are 33 of the 1,439 NPPES records with a practice address in Ukiah, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Ukiah → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Thomas Billings, M.D.Ukiah, CA 954821326043852
- Theron Chan, M.D.Ukiah, CA 954821952385833
- Graham Chelius, M.D.Ukiah, CA 954821063459311
- Peter Cho, MDUkiah, CA 954821619968948
- Lynne Coen, M.D.Ukiah, CA 954821851375711
- Howard Coren, M.D.Ukiah, CA 954821730124215
- Helen Hauk, M.D.Ukiah, CA 954821457338394
- Trieneke Kylstra, MDUkiah, CA 954821740243286
Common questions
What is Mack Wu, DO's NPI number?
Mack Wu, DO's National Provider Identifier (NPI) is 1013777804, issued on Mar 20, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Mack Wu, DO located?
The NPPES record lists a practice address at 260 Hospital Dr Ste 102, Ukiah, CA, 95482. Phone: (707) 467-3123. Providers update this record themselves, so call before visiting.
How can I verify Mack Wu, DO's license?
NPPES lists California license number 20A24443, 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 Mack Wu, DO prescribe under Medicare Part D?
In 2024, Mack Wu, DO had 68 Medicare Part D claims for 19 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.