Randall S. Haas, MD
Internal Medicine Physician · Madison, WI
Randall S. Haas, MD is an internal medicine physician with a practice address in Madison, Wisconsin, and NPI 1205881513, issued on May 24, 2006. Check the license (Wisconsin 29441-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Randall S. Haas
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 29441-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 752 N High Point RD, Madison, WI 53717
- Phone
- (608) 824-4800
- Enumerated
- May 24, 2006
- Record last updated
- Nov 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (608) 824-4910
- Medicaid ID
- 1205881513 WI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 752 N High Point RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carleen Acker, PA-CPhysician Assistant1447514773
- Justin Amarnani, M.DFamily Medicine Physician1164866059
- Clifford Anderson, MDInternal Medicine Physician1487691788
- Sara Anderson-Kim, APNPNurse Practitioner1902057052
- Conrad Andringa, MDPediatrics Physician1528002581
- Timothy Baardseth, PH.D.Psychologist1104169218
Verify Randall S. Haas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 29441-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% more Medicare Part D claims than the average internal medicine physician in 2024
4,405 Medicare Part D claims for 561 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 27 claims were for opioids.
Most prescribed
- Atorvastatin Calcium281 claims
- Omeprazole199 claims
- Amlodipine Besylate156 claims
- Losartan Potassium147 claims
- Simvastatin136 claims
- Lisinopril126 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.
Randall S. Haas among 2,078 internal medicine physician records in Wisconsin
Randall S. Haas, MD 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 fileNo · 53% of these records are
- Record last updated2020 · 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).
417 internal medicine physician records list a practice address in Madison
They are 417 of the 15,014 NPPES records with a practice address in Madison, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Madison → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lorna Belsky, MDMadison, WI 537171912974536
- John Blanchard, MDMadison, WI 537171982671517
- Shobhina Chheda, MDMadison, WI 537171538136213
- Daniela Constantinescu, MDMadison, WI 537171033103940
- David Feldstein, MDMadison, WI 537171396712444
- James Haine, MDMadison, WI 537171629063110
- Peter Idsvoog, MDMadison, WI 537171407822448
- Kristin Lewicki, MDMadison, WI 537171285695106
Common questions
What is Randall S. Haas, MD's NPI number?
Randall S. Haas, MD's National Provider Identifier (NPI) is 1205881513, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Randall S. Haas, MD located?
The NPPES record lists a practice address at 752 N High Point RD, Madison, WI, 53717. Phone: (608) 824-4800. Providers update this record themselves, so call before visiting.
How can I verify Randall S. Haas, MD's license?
NPPES lists Wisconsin license number 29441-020, 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 Randall S. Haas, MD prescribe under Medicare Part D?
In 2024, Randall S. Haas, MD had 4,405 Medicare Part D claims for 561 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.