John Christopher Williams, MD
Internal Medicine Physician · Green Bay, WI
John Christopher Williams, MD is an internal medicine physician with a practice address in Green Bay, Wisconsin, and NPI 1295717668, issued on Nov 18, 2005. Check the license (Wisconsin 49093-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Christopher Williams
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 49093-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1715 Dousman St, Green Bay, WI 54303
- Phone
- (920) 496-4700
- Enumerated
- Nov 18, 2005
- Record last updated
- Nov 21, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 34842500 WI
- Medicare enrollment
- Enrolled (PECOS I20060508000562); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 1715 Dousman St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Christopher Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49093-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average internal medicine physician in 2024
10,081 Medicare Part D claims for 686 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 230 claims were for opioids.
Most prescribed
- Atorvastatin Calcium600 claims
- Levothyroxine Sodium519 claims
- Amlodipine Besylate378 claims
- Losartan Potassium352 claims
- Omeprazole331 claims
- Lisinopril316 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 MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $108.75
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Oneida NationOneida, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Christopher Williams among 2,078 internal medicine physician records in Wisconsin
John Christopher Williams, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1989 · median 2002 among the 1,098 with a school on file
- Record last updated2019 · 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).
69 internal medicine physician records list a practice address in Green Bay
They are 69 of the 4,619 NPPES records with a practice address in Green Bay, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Green Bay → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Quan Ai, MDGreen Bay, WI 543031821089616
- Gregory Bottei, MDGreen Bay, WI 543031245255561
- Diane Christel, MDGreen Bay, WI 543031841216116
- Bruce Fenster, MDGreen Bay, WI 543031386660454
- Vaishali Gala, MDGreen Bay, WI 543031457388738
- Michael Gallagher, M.D.Green Bay, WI 543031174544555
- Richard Greene, MDGreen Bay, WI 543031619082609
- John Rank, MDGreen Bay, WI 543031336165877
Common questions
What is John Christopher Williams, MD's NPI number?
John Christopher Williams, MD's National Provider Identifier (NPI) is 1295717668, issued on Nov 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Christopher Williams, MD located?
The NPPES record lists a practice address at 1715 Dousman St, Green Bay, WI, 54303. Phone: (920) 496-4700. Providers update this record themselves, so call before visiting.
How can I verify John Christopher Williams, MD's license?
NPPES lists Wisconsin license number 49093-020, 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 John Christopher Williams, MD prescribe under Medicare Part D?
In 2024, John Christopher Williams, MD had 10,081 Medicare Part D claims for 686 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is John Christopher Williams, MD's MIPS final score?
The 2023 MIPS final score is 94.6 of 100. 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.