Ryan J. Spencer, MD
Gynecologic Oncology Physician · Madison, WI
Ryan J. Spencer, MD is a gynecologic oncology physician with a practice address in Madison, Wisconsin, and NPI 1881859684, issued on Jul 22, 2008. Check the license (Wisconsin 56994, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ryan J. Spencer
- Credential
- MD
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License numbers
- 56994 WI
56994-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 Highland Ave, Madison, WI 53792
- Phone
- (608) 265-1700
- Enumerated
- Jul 22, 2008
- Record last updated
- Jan 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (608) 263-2201
- Medicare enrollment
- Enrolled (PECOS I20120420000506); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gynecologic oncology physician records → All 35 in Wisconsin → Look up another NPI →
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 Ryan J. Spencer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 56994Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024
74 Medicare Part D claims for 22 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Lynparza18 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 3 group practices
- Aspirus Medical Group, Inc.Weston, WI
- Dean Health Systems IncMadison, WI
- 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).
Ryan J. Spencer among 35 gynecologic oncology physician records in Wisconsin
Ryan J. Spencer, MD is one of 35 gynecologic oncology physician records with a practice address in Wisconsin. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 54% of them.
- NPI issued2008 · 54% of these records are older, 37% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2007 · median 2000 among the 26 with a school on file
- Record last updated2021 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0201X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecologic Oncology Physician providers in Wisconsin
There are 35 gynecologic oncology physician records in Wisconsin.
All 35 in Wisconsin → Every provider in Madison → Gynecologic Oncology Physician nationwide →
The 8 gynecologic oncology physician records with the nearest ZIP codes
- Lisa Barroilhet, M.D.Madison, WI 537921730300443
- Elizabeth Farabee, MDMadison, WI 537921861079584
- Julia Gelissen, MDMadison, WI 537921487273025
- Ellen Hartenbach, MDMadison, WI 537921689640708
- Laura Huffman, M.D.Madison, WI 537921376855288
- Kari Kubalanza, M.D.Madison, WI 537921013250604
- David Kushner, MDMadison, WI 537921659347672
- Laurel RiceMadison, WI 537921619046257
Common questions
What is Ryan J. Spencer, MD's NPI number?
Ryan J. Spencer, MD's National Provider Identifier (NPI) is 1881859684, issued on Jul 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ryan J. Spencer, 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 Ryan J. Spencer, MD's license?
NPPES lists Wisconsin license number 56994, 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 Ryan J. Spencer, MD prescribe under Medicare Part D?
In 2024, Ryan J. Spencer, MD had 74 Medicare Part D claims for 22 beneficiaries; the average among gynecologic oncology physician prescribers was 195. 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.