Alan E. Mast, MD
Clinical Pathology/Laboratory Medicine Physician · Milwaukee, WI
Alan E. Mast, MD is a clinical pathology/laboratory medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1619991205, issued on Jul 27, 2006. Check the license (Wisconsin 45998, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Alan E. Mast
- Credential
- MD
- Primary taxonomy
- Clinical Pathology/Laboratory Medicine Physician 207ZP0105X
- License number
- 45998 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 805-6966
- Enumerated
- Jul 27, 2006
- Record last updated
- May 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (414) 805-6980
- Medicaid ID
- 1619991205 WI
- Entity
- Type 1 · individual
8 nearest clinical pathology/laboratory medicine physician records → All 80 in Wisconsin → Look up another NPI →
Also registered at 9200 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alan E. Mast in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45998Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $44.57
2 payments; by number, the most common kind was food and beverage; the largest payer was Blueprint Medicines Corporation. The 177 providers of this specialty with any payment received $7,028.16 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Alan E. Mast among 80 clinical pathology/laboratory medicine physician records in Wisconsin
Alan E. Mast, MD is one of 80 clinical pathology/laboratory medicine physician records with a practice address in Wisconsin. 71% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2014 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0105X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Pathology/Laboratory Medicine Physician providers in Wisconsin
There are 80 clinical pathology/laboratory medicine physician records in Wisconsin.
All 80 in Wisconsin → Every provider in Milwaukee → Clinical Pathology/Laboratory Medicine Physician nationwide →
The 8 clinical pathology/laboratory medicine physician records with the nearest ZIP codes
- James Keating, MDMilwaukee, WI 532261275585010
- Sandor Kovacs, M.D.Milwaukee, WI 532261356795553
- Jorge Leon Colonna, M.D.Milwaukee, WI 532261588870554
- Eugene McMahon, MDWauwatosa, WI 532261518945237
- Chester Jablonski, MDPewaukee, WI 530721982703989
- Michael Phillips, M.D.Oconomowoc, WI 530661124001938
- Gerardo Fronda, M.D.Menomonee Falls, WI 530511457315160
- Barbara Earnest, M.D.Racine, WI 534051902827561
Common questions
What is Alan E. Mast, MD's NPI number?
Alan E. Mast, MD's National Provider Identifier (NPI) is 1619991205, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan E. Mast, MD located?
The NPPES record lists a practice address at 9200 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 805-6966. Providers update this record themselves, so call before visiting.
How can I verify Alan E. Mast, MD's license?
NPPES lists Wisconsin license number 45998, 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.
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.