Christina Mariyam Joy, MD
Nephrology Physician · Milwaukee, WI
Christina Mariyam Joy, MD is a nephrology physician with a practice address in Milwaukee, Wisconsin, and NPI 1639553605, issued on Jul 19, 2015. Check the license (Wisconsin 76560, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Christina Mariyam Joy
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 76560 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 805-3100
- Enumerated
- Jul 19, 2015
- Record last updated
- Jan 10, 2022
- Fax
- (262) 532-9584
- Medicare enrollment
- Enrolled (PECOS I20220202000972); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 207 in Wisconsin → Look up another NPI →
Also registered at 9200 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lolia Abibo, M.D.Hospitalist Physician1912359795
- Haisam Abid, MBBSHospitalist Physician1578083184
- Faith Abodunrin, MDHematology & Oncology Physician1437768769
Verify Christina Mariyam Joy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 76560Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average nephrology physician in 2024
629 Medicare Part D claims for 117 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Amlodipine Besylate58 claims
- Calcitriol51 claims
- Furosemide47 claims
- Jardiance40 claims
- Allopurinol34 claims
- Chlorthalidone33 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): 80.5 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).
Bills Medicare through one group practice
- The Medical College OF Wisconsin IncWauwatosa, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christina Mariyam Joy among 207 nephrology physician records in Wisconsin
Christina Mariyam Joy, MD is one of 207 nephrology physician records with a practice address in Wisconsin. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.
- NPI issued2015 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2011 · median 2004 among the 157 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Wisconsin
There are 207 nephrology physician records in Wisconsin.
All 207 in Wisconsin → Every provider in Milwaukee → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Samuel Blumenthal, MDMilwaukee, WI 532261437100880
- Barbara Bresnahan, MDMilwaukee, WI 532261073564431
- Aaron Dall, MDMilwaukee, WI 532261730131061
- Ashraf El-Meanawy, MD, PH.D, MSMilwaukee, WI 532261659486470
- Jack Kleinman, MDMilwaukee, WI 532261508817347
- Mahendr Kochar, MDMilwaukee, WI 532261164473906
- Kamlesh Kurre, M.DMilwaukee, WI 532261679669766
- John Raymond, MDMilwaukee, WI 532261043328099
Common questions
What is Christina Mariyam Joy, MD's NPI number?
Christina Mariyam Joy, MD's National Provider Identifier (NPI) is 1639553605, issued on Jul 19, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Christina Mariyam Joy, MD located?
The NPPES record lists a practice address at 9200 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 805-3100. Providers update this record themselves, so call before visiting.
How can I verify Christina Mariyam Joy, MD's license?
NPPES lists Wisconsin license number 76560, 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 Christina Mariyam Joy, MD prescribe under Medicare Part D?
In 2024, Christina Mariyam Joy, MD had 629 Medicare Part D claims for 117 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Christina Mariyam Joy, MD's MIPS final score?
The 2023 MIPS final score is 80.5 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.