Natalie S. Callander, MD
Hematology (Internal Medicine) Physician · Madison, WI
Natalie S. Callander, MD is a hematology (internal medicine) physician with a practice address in Madison, Wisconsin, and NPI 1649247339, issued on Mar 2, 2006. Check the license (Wisconsin 47456, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Natalie S. Callander
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 47456 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 Highland Ave, Madison, WI 53792
- Phone
- (608) 265-1700
- Enumerated
- Mar 2, 2006
- Record last updated
- Jan 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (608) 266-6020
- Medicare enrollment
- Enrolled (PECOS I20041116000654); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1985
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 600 Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael AabergSurgery Physician1346991064
- Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
- Daniel Abbott, MDSurgical Oncology Physician1750412615
- Alaa Abd-ElsayedPain Medicine Physician1194967703
- Safiyya Abdulkadir, MDRheumatology Physician1093455826
- Edwin Abel, M.D.Urology Physician1083800510
Verify Natalie S. Callander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 47456Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average hematology (internal medicine) physician in 2024
1,708 Medicare Part D claims for 123 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. 154 claims were for opioids.
Most prescribed
- Acyclovir337 claims
- Revlimid117 claims
- Lenalidomide71 claims
- Dexamethasone62 claims
- Sulfamethoxazole-Trimethoprim56 claims
- Ondansetron Hcl46 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.
Industry payments in 2024: $5,344.14
14 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 721 providers of this specialty with any payment received $13,778.35 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.
Bills Medicare through one group practice
- University OF Wisconsin Medical Foundation IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Wisconsin
There are 18 hematology (internal medicine) physician records in Wisconsin.
Other hematology (internal medicine) physician records in Wisconsin
- Danielle Atibalentja, M.D., PH.D.Madison, WI1952752305
- David Blake, M.D.New Berlin, WI1831161348
- Wayne Bottner, MDLa Crosse, WI1255335931
- Julie Chang, M.D.Madison, WI1679524078
- Kim Dittus, MD, PHDMadison, WI1154538262
- Christopher Fletcher, M.D.Madison, WI1114121092
- Anna Jones, MDLa Crosse, WI1699152843
- Ronnie Kirschling, M.D.Wisconsin Rapids, WI1235151614
- Hongtao LiuMadison, WI1336332345
- Richard Mercier, MDMarshfield, WI1548360803
Common questions
What is Natalie S. Callander, MD's NPI number?
Natalie S. Callander, MD's National Provider Identifier (NPI) is 1649247339, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Natalie S. Callander, MD located?
The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 265-1700. Providers update this record themselves, so call before visiting.
How can I verify Natalie S. Callander, MD's license?
NPPES lists Wisconsin license number 47456, 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 Natalie S. Callander, MD prescribe under Medicare Part D?
In 2024, Natalie S. Callander, MD had 1,708 Medicare Part D claims for 123 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.