Alan Gregory Shamrock, MD
Orthopaedic Surgery Physician · Green Bay, WI
Alan Gregory Shamrock, MD is an orthopaedic surgery physician with a practice address in Green Bay, Wisconsin, and NPI 1376072819, issued on Jun 8, 2017. Check the license (Wisconsin 84137-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Alan Gregory Shamrock
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- 84137-20 WI
R-10836 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1726 Shawano Ave, Green Bay, WI 54303
- Phone
- (920) 496-4700
- Enumerated
- Jun 8, 2017
- Record last updated
- Dec 20, 2024
- Medicaid ID
- 100288844 WI
- Medicare enrollment
- Enrolled (PECOS I20240925000560); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 656 in Wisconsin → Look up another NPI →
Also registered at 1726 Shawano Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alan Gregory Shamrock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 84137-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
30 Medicare Part D claims for 19 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Oxycodone Hcl12 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: $3,350.17
31 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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
- St Vincent Hospital-Hospital Sisters-Third Order OF St FrancisGreen Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alan Gregory Shamrock among 656 orthopaedic surgery physician records in Wisconsin
Alan Gregory Shamrock, MD is one of 656 orthopaedic surgery 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 2017, is newer than 87% of them.
- NPI issued2017 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2017 · median 2006 among the 401 with a school on file
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Wisconsin
There are 656 orthopaedic surgery physician records in Wisconsin.
All 656 in Wisconsin → Every provider in Green Bay → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Matthew Colligan, D.O.Green Bay, WI 543031174528202
- Rolf Lulloff, MDGreen Bay, WI 543031104859388
- Michael Oreilly, MDGreen Bay, WI 543031912923699
- Michael Ryan, M.D.Green Bay, WI 543031124314612
- Christopher Vansaders, MDGreen Bay, WI 543031255366878
- Jonathan Dunker, D.O.Green Bay, WI 543041144543299
- Benjamin Ebben, MDGreen Bay, WI 543041902260060
- James Hinckley, MDGreen Bay, WI 543041467485755
Common questions
What is Alan Gregory Shamrock, MD's NPI number?
Alan Gregory Shamrock, MD's National Provider Identifier (NPI) is 1376072819, issued on Jun 8, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Alan Gregory Shamrock, MD located?
The NPPES record lists a practice address at 1726 Shawano Ave, Green Bay, WI, 54303. Phone: (920) 496-4700. Providers update this record themselves, so call before visiting.
How can I verify Alan Gregory Shamrock, MD's license?
NPPES lists Wisconsin license number 84137-20, 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 Alan Gregory Shamrock, MD prescribe under Medicare Part D?
In 2024, Alan Gregory Shamrock, MD had 30 Medicare Part D claims for 19 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.