Richard K. Wu, MD
Internal Medicine Physician · South Deerfield, MA
Richard K. Wu, MD is an internal medicine physician with a practice address in South Deerfield, Massachusetts, and NPI 1598783094, issued on Jul 17, 2006. Check the license (Massachusetts 209003, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Richard K. Wu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 209003 MA
Self-reported in NPPES; status is on the state search - Practice location
- 424 State RD, South Deerfield, MA 01373
- Phone
- (413) 665-8517
- Enumerated
- Jul 17, 2006
- Record last updated
- Nov 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (413) 665-8741
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Richard K. Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 209003Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
19 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Richard K. Wu among 6,825 internal medicine physician records in Massachusetts
Richard K. Wu, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2016 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 internal medicine physician records list a practice address in South Deerfield
They are 3 of the 108 NPPES records with a practice address in South Deerfield, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in South Deerfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Seth Kupferschmid, M.D.South Deerfield, MA 013731023059870
- Robert Leitch, MDSouth Deerfield, MA 013731598734188
- Rachna KapoorSunderland, MA 013751659767424
- Adam Blacksin, MDTurners Falls, MA 013761811983810
- Wesley Green, MDTurners Falls, MA 013761013074285
- Wayne Hioe, MDTurners Falls, MA 013761215907266
- Laurence Klein, MDTurners Falls, MA 013761285621144
- Barry PoretTurners Falls, MA 013761689735185
Common questions
What is Richard K. Wu, MD's NPI number?
Richard K. Wu, MD's National Provider Identifier (NPI) is 1598783094, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard K. Wu, MD located?
The NPPES record lists a practice address at 424 State RD, South Deerfield, MA, 01373. Phone: (413) 665-8517. Providers update this record themselves, so call before visiting.
How can I verify Richard K. Wu, MD's license?
NPPES lists Massachusetts license number 209003, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard K. Wu, MD prescribe under Medicare Part D?
In 2024, Richard K. Wu, MD had 19 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.