Doctor profile · Federal record
Dr. Chang Joo, MD
Nephrology Physician (CMS: Nephrology) · Modesto, CA
- NPI 1508868787
- Accepts Medicare
- MIPS 96.7 / 100 · 2023
- 46 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
305 E Granger Ave, Ste 202
Modesto, CA 953504344
(209) 526-1606
fax (209) 526-1677
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- February 22, 2008
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- California #A481920
- Medicaid
- CA #00A481920
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1508868787. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,356
Distinct HCPCS
10
Medicare allowed
$213,108
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 382 | 233 | $130 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 312 | 131 | $79 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 184 | 24 | $355 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 141 | 74 | $117 | |
90935 |
Hemodialysis procedure with physician evaluation | 101 | 47 | $71 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 90 | 19 | $295 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 70 | 61 | $180 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 39 | 39 | $220 | |
81000 |
Manual urinalysis test with examination using microscope, non-automated | 21 | 21 | $4 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 16 | 15 | $130 |
In context: peer comparison
Among 5 peers in Modesto Nephrology Physician, average services per provider: 221. This provider delivers 6.1× the peer median.Open Payments
Industry payments received
All-time total
$45
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 1 | $24.53 | |
| Amgen INC. | 1 | $20.22 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,269
Patients
378
Total drug cost
$100,957
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Calcitriol | Generic | 266 | 86 | $10,034 |
| Amlodipine Besylate | Generic | 242 | 80 | $4,586 |
| Losartan Potassium | Generic | 119 | 43 | $2,879 |
| Furosemide | Generic | 98 | 31 | $1,038 |
| Hydralazine Hcl | Generic | 81 | 25 | $2,775 |
| Atorvastatin Calcium | Generic | 77 | 24 | $1,455 |
| Lisinopril | Generic | 56 | 19 | $944 |
| Prosol (Parenteral Amino Acid 20% No.1) | Brand | 54 | 0 | $8,754 |
| Potassium Chloride | Generic | 49 | 16 | $2,934 |
| Metoprolol Tartrate | Generic | 47 | 16 | $527 |
Hospital affiliations
Frequently asked questions
What is Dr. Chang Joo's medical specialty?
Dr. Chang Joo practices Nephrology Physician in Modesto, CA.
Where does Dr. Chang Joo practice?
Dr. Chang Joo practices at 305 E Granger Ave, Modesto, CA 953504344. Office phone: 2095261606.
What is Dr. Chang Joo's NPI?
Dr. Chang Joo's National Provider Identifier (NPI) is 1508868787, issued by NPPES.
Does Dr. Chang Joo accept Medicare assignment?
Yes. Dr. Chang Joo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chang Joo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960). Source: CMS Medicare Physician & Other Practitioners file.