Doctor profile · Federal record
Dr. Christina Mariyam Joy, MD
Nephrology Physician (CMS: Nephrology) · Milwaukee, WI
- NPI 1639553605
- Accepts Medicare
- MIPS 80.5 / 100 · 2023
- 15 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9200 W Wisconsin Ave
Milwaukee, WI 532263522
(414) 805-3100
fax (262) 532-9584
Credentials & registration
- NPI registered
- July 2015 — 11 yrs on file
- Profile last updated
- January 10, 2022
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Wisconsin #76560
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639553605. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
492
Distinct HCPCS
7
Medicare allowed
$46,972
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90935 |
Hemodialysis procedure with physician evaluation | 172 | 55 | $67 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 96 | 46 | $112 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 79 | 42 | $74 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 74 | 61 | $163 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 34 | 28 | $92 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 23 | 22 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 12 | $62 |
In context: peer comparison
Among 22 peers in this city , average services per provider: 129. This provider delivers 3.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
271
Patients
40
Total drug cost
$22,148
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Calcitriol | Generic | 49 | 14 | $970 |
| Amlodipine Besylate | Generic | 40 | 12 | $678 |
| Allopurinol | Generic | 37 | 0 | $605 |
| Furosemide | Generic | 30 | 14 | $201 |
| Bumetanide | Generic | 21 | 0 | $565 |
| Chlorthalidone | Generic | 20 | 0 | $484 |
| Losartan Potassium | Generic | 20 | 0 | $202 |
| Hydralazine Hcl | Generic | 16 | 0 | $355 |
| Auryxia (Ferric Citrate) | Brand | 14 | 0 | $17,764 |
| Torsemide | Generic | 13 | 0 | $233 |
Frequently asked questions
What is Dr. Christina Mariyam Joy's medical specialty?
Dr. Christina Mariyam Joy practices Nephrology Physician in Milwaukee, WI.
Where does Dr. Christina Mariyam Joy practice?
Dr. Christina Mariyam Joy practices at 9200 W Wisconsin Ave, Milwaukee, WI 532263522. Office phone: 4148053100.
What is Dr. Christina Mariyam Joy's NPI?
Dr. Christina Mariyam Joy's National Provider Identifier (NPI) is 1639553605, issued by NPPES.
Does Dr. Christina Mariyam Joy accept Medicare assignment?
Yes. Dr. Christina Mariyam Joy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christina Mariyam Joy commonly perform?
Top Medicare-reported procedures in 2023: Hemodialysis procedure with physician evaluation (HCPCS 90935); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.