Doctor profile · Federal record
Dr. Mary Hammes
Nephrology Physician (CMS: Nephrology) · Chicago, IL
- NPI 1366505885
- Accepts Medicare
- MIPS 87.7 / 100 · 2023
- 38 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5841 S Maryland Ave
Chicago, IL 606371443
(888) 824-0200 - Mailing address
-
150 Harvester Dr, Suite 300
Burr Ridge, IL 605275919
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- October 24, 2022
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Illinois #036081803
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366505885. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
697
Distinct HCPCS
6
Medicare allowed
$168,998
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 353 | 47 | $372 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 104 | 54 | $123 | |
90935 |
Hemodialysis procedure with physician evaluation | 92 | 57 | $75 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 71 | 37 | $104 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 64 | 61 | $139 | |
99284 |
Emergency department visit with moderate level of medical decision making | 13 | 12 | $132 |
In context: peer comparison
Among 62 peers in this city , average services per provider: 104. This provider delivers 6.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
139
Patients
11
Total drug cost
$9,925
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 30 | 11 | $242 |
| Prednisone | Generic | 26 | 0 | $153 |
| Calcitriol | Generic | 19 | 0 | $421 |
| Hydralazine Hcl | Generic | 15 | 0 | $295 |
| Furosemide | Generic | 14 | 0 | $212 |
| Kerendia (Finerenone) | Brand | 12 | 0 | $8,137 |
| Metoprolol Succinate | Generic | 12 | 0 | $307 |
| Pantoprazole Sodium | Generic | 11 | 0 | $159 |
Frequently asked questions
What is Dr. Mary Hammes's medical specialty?
Dr. Mary Hammes practices Nephrology Physician in Chicago, IL.
Where does Dr. Mary Hammes practice?
Dr. Mary Hammes practices at 5841 S Maryland Ave, Chicago, IL 606371443. Office phone: 8888240200.
What is Dr. Mary Hammes's NPI?
Dr. Mary Hammes's National Provider Identifier (NPI) is 1366505885, issued by NPPES.
Does Dr. Mary Hammes accept Medicare assignment?
Yes. Dr. Mary Hammes accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Hammes commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hemodialysis procedure with physician evaluation (HCPCS 90935). Source: CMS Medicare Physician & Other Practitioners file.