Margaret Pfeiffer, M.S., R.D., C.L.S.
Registered Dietitian · Wauwatosa, WI
Margaret Pfeiffer, M.S., R.D., C.L.S. is a registered dietitian with a practice address in Wauwatosa, Wisconsin, and NPI 1750672853, issued on Apr 22, 2011. Check the license (Wisconsin 312-29, as entered in NPPES) with the Wisconsin board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Margaret Pfeiffer
- Credential
- M.S., R.D., C.L.S.
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- 312-29 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2600 N Mayfair RD Ste 950, Wauwatosa, WI 53226
- Phone
- (414) 456-1123
- Enumerated
- Apr 22, 2011
- Record last updated
- Apr 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Margaret Pfeiffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 312-29Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21 registered dietitian records list a practice address in Wauwatosa
They are 21 of the 1,787 NPPES records with a practice address in Wauwatosa, and 1,457 registered dietitian records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 21 in Wauwatosa → All 1,457 in Wisconsin → Every provider in Wauwatosa →
Other registered dietitian records in Wisconsin
- Jerilyn AbbaRipon, WI1487725172
- Jennifer Abernathy, RDEau Claire, WI1922136407
- Lynn Abitz, RD, CDNeenah, WI1801011127
- Austin Abts, RDEau Claire, WI1548939226
- Rosemarie Adamski, R.D.Racine, WI1457798357
- Dipti Adamson, RD, CDMilwaukee, WI1487884219
- Rachel Adler, RD CDColumbus, WI1356519359
- Amanda AertsRhinelander, WI1922378579
- Jennifer AguirreMenomonee Falls, WI1053901454
- Sydney Albarado, RDEllsworth, WI1932910254
Common questions
What is Margaret Pfeiffer, M.S., R.D., C.L.S.'s NPI number?
Margaret Pfeiffer, M.S., R.D., C.L.S.'s National Provider Identifier (NPI) is 1750672853, issued on Apr 22, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Pfeiffer, M.S., R.D., C.L.S. located?
The NPPES record lists a practice address at 2600 N Mayfair RD Ste 950, Wauwatosa, WI, 53226. Phone: (414) 456-1123. Providers update this record themselves, so call before visiting.
How can I verify Margaret Pfeiffer, M.S., R.D., C.L.S.'s license?
NPPES lists Wisconsin license number 312-29, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity 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. 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.