Roger D. Watson, M.D.
Internal Medicine Physician · Delafield, WI
Roger D. Watson, M.D. is an internal medicine physician with a practice address in Delafield, Wisconsin, and NPI 1932172327, issued on Feb 8, 2006. Check the license (Wisconsin 42990, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Roger D. Watson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 42990 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2750 Golf Road, Delafield, WI 53018
- Phone
- (262) 928-4900
- Enumerated
- Feb 8, 2006
- Record last updated
- Apr 29, 2026
- Fax
- (262) 928-4960
- Medicaid ID
- 34349700 WI
- Medicare enrollment
- Enrolled (PECOS I20040510000306); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1999
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Verify Roger D. Watson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 42990Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average internal medicine physician in 2024
4,080 Medicare Part D claims for 350 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium480 claims
- Amlodipine Besylate290 claims
- Lisinopril225 claims
- Losartan Potassium218 claims
- Levothyroxine Sodium164 claims
- Hydrochlorothiazide155 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.
Bills Medicare through one group practice
- Prohealth Medical Group IncOconomowoc, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roger D. Watson among 2,078 internal medicine physician records in Wisconsin
Roger D. Watson, M.D. is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1999 · median 2002 among the 1,098 with a school on file
- Record last updated2026 · 55% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 internal medicine physician records list a practice address in Delafield
They are 4 of the 174 NPPES records with a practice address in Delafield, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Delafield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Hayes Hatfield, MDDelafield, WI 530181669710869
- Susan Russler, M.D.Delafield, WI 530181538328463
- Mark SchatenDelafield, WI 530181356458632
- Gurmeet Bhatia, M.D.Cleveland, WI 530151164441440
- Avi Bernstein, MDGermantown, WI 530221972643252
- Stephanie Momper, MDGermantown, WI 530221194899005
- Megan Rotzenberg, M.D.Germantown, WI 530221285084335
- Christopher WeberGermantown, WI 530221619140001
Common questions
What is Roger D. Watson, M.D.'s NPI number?
Roger D. Watson, M.D.'s National Provider Identifier (NPI) is 1932172327, issued on Feb 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Roger D. Watson, M.D. located?
The NPPES record lists a practice address at 2750 Golf Road, Delafield, WI, 53018. Phone: (262) 928-4900. Providers update this record themselves, so call before visiting.
How can I verify Roger D. Watson, M.D.'s license?
NPPES lists Wisconsin license number 42990, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Roger D. Watson, M.D. prescribe under Medicare Part D?
In 2024, Roger D. Watson, M.D. had 4,080 Medicare Part D claims for 350 beneficiaries; 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.