Andrew Pfaffenbach, M.D.
Internal Medicine Physician · Appleton, WI
Andrew Pfaffenbach, M.D. is an internal medicine physician with a practice address in Appleton, Wisconsin, and NPI 1740654862, issued on Dec 1, 2015. Check the license (Wisconsin 40300-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Andrew Pfaffenbach
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 40300-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2500 E Capitol Dr, Appleton, WI 54911
- Phone
- (920) 731-5811
- Enumerated
- Dec 1, 2015
- Record last updated
- Sep 7, 2022
- Fax
- (920) 738-6293
- Medicare enrollment
- Enrolled (PECOS I20220913003235); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 2500 E Capitol Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nicole Augsburger, FNPFamily Nurse Practitioner1326729666
- Amanda Barnes, PA-CPhysician Assistant1336481308
Verify Andrew Pfaffenbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 40300-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,633 Medicare Part D claims for 224 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 16 claims were for opioids.
Most prescribed
- Amlodipine Besylate97 claims
- Atorvastatin Calcium95 claims
- Rosuvastatin Calcium63 claims
- Lisinopril58 claims
- Gabapentin53 claims
- Losartan Potassium51 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
- Thedacare, IncorporatedNeenah, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Pfaffenbach among 2,078 internal medicine physician records in Wisconsin
Andrew Pfaffenbach, 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 2015, is newer than 73% of them.
- NPI issued2015 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1997 · median 2002 among the 1,098 with a school on file
- Record last updated2022 · 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).
39 internal medicine physician records list a practice address in Appleton
They are 39 of the 3,249 NPPES records with a practice address in Appleton, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Appleton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Satish Achanti, MDAppleton, WI 549111982711198
- Sahar Ahmad, MDAppleton, WI 549111740264696
- Jack Anderson, MDAppleton, WI 549111992737522
- Craig DestreeAppleton, WI 549111154732063
- Deborah Ihde, MDAppleton, WI 549111053317594
- Maxwell MachurickAppleton, WI 549111841752680
- Chelsey McNabb Pender, MDAppleton, WI 549111932580784
- Daniel Mihalo, D.O.Appleton, WI 549111821011651
Common questions
What is Andrew Pfaffenbach, M.D.'s NPI number?
Andrew Pfaffenbach, M.D.'s National Provider Identifier (NPI) is 1740654862, issued on Dec 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Pfaffenbach, M.D. located?
The NPPES record lists a practice address at 2500 E Capitol Dr, Appleton, WI, 54911. Phone: (920) 731-5811. Providers update this record themselves, so call before visiting.
How can I verify Andrew Pfaffenbach, M.D.'s license?
NPPES lists Wisconsin license number 40300-020, 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 Andrew Pfaffenbach, M.D. prescribe under Medicare Part D?
In 2024, Andrew Pfaffenbach, M.D. had 1,633 Medicare Part D claims for 224 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.