Gregory A. Anderson, MD
Urology Physician · Marshfield, WI
Gregory A. Anderson, MD is a urology physician with a practice address in Marshfield, Wisconsin, and NPI 1134234610, issued on Aug 21, 2006. Check the license (Wisconsin 30349, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory A. Anderson
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 30349 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Oak Ave, Marshfield, WI 54449
- Phone
- (715) 387-5235
- Enumerated
- Aug 21, 2006
- Record last updated
- Nov 17, 2022
- Medicaid ID
- 31938400 WI
- Medicare enrollment
- Enrolled (PECOS I20100607000296); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest urology physician records → All 259 in Wisconsin → Look up another NPI →
Also registered at 1000 N Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory A. Anderson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 30349Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average urology physician in 2024
808 Medicare Part D claims for 241 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 78 claims were for opioids.
Most prescribed
- Tamsulosin Hcl164 claims
- Finasteride110 claims
- Hydrocodone-Acetaminophen75 claims
- Sulfamethoxazole-Trimethoprim71 claims
- Oxybutynin Chloride Er60 claims
- Imipramine Hcl42 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $34.39
2 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 9,340 providers of this specialty with any payment received $3,800.04 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
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory A. Anderson among 259 urology physician records in Wisconsin
Gregory A. Anderson, MD is one of 259 urology physician records with a practice address in Wisconsin. 76% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 43% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1988 · median 2002 among the 166 with a school on file
- Record last updated2022 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in Wisconsin
There are 259 urology physician records in Wisconsin.
All 259 in Wisconsin → Every provider in Marshfield → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Yi HsiehMarshfield, WI 544491184628661
- Joseph Mennen, MDMarshfield, WI 544491467567925
- J Thomalla, MDMarshfield, WI 544491245345719
- Jason Wilson, MDWeston, WI 544761275631012
- Philip Zickerman, MDWeston, WI 544761578661310
- John Fuller, MDStevens Point, WI 544811801817267
- Dustin Pagoria, M.D.Stevens Point, WI 544811427291236
- Chirasakdi Ratanawong, MDStevens Point, WI 544811760583462
Common questions
What is Gregory A. Anderson, MD's NPI number?
Gregory A. Anderson, MD's National Provider Identifier (NPI) is 1134234610, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory A. Anderson, MD located?
The NPPES record lists a practice address at 1000 N Oak Ave, Marshfield, WI, 54449. Phone: (715) 387-5235. Providers update this record themselves, so call before visiting.
How can I verify Gregory A. Anderson, MD's license?
NPPES lists Wisconsin license number 30349, 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 Gregory A. Anderson, MD prescribe under Medicare Part D?
In 2024, Gregory A. Anderson, MD had 808 Medicare Part D claims for 241 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is Gregory A. Anderson, MD's MIPS final score?
The 2023 MIPS final score is 78.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.