Doctor profile · Federal record
Dr. Richard Nierenberg, MD
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Phoenix, AZ
- NPI 1598870628
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
1800 E van Buren St
Phoenix, AZ 85006
(602) 251-8316 - Additional location
-
415 S 28Th Ave
Hattiesburg, MS 394017246
(601) 288-4329
fax (601) 288-3191 - Additional location
-
1500 S Mill Ave
Tempe, AZ 852816699
fax (480) 333-5165 - Mailing address
-
32531 N Scottsdale RD Ste 102-213
Scottsdale, AZ 852661519
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- January 22, 2019
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- Arizona #44026
- Medicaid (3)
- LA #1419486 · FL #279981200 · MS #09553865
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598870628. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,006
Distinct HCPCS
4
Medicare allowed
$131,569
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 517 | 272 | $115 | |
99239 |
Hospital discharge day management, more than 30 minutes | 259 | 248 | $111 | |
99291 |
Critical care, first 30-74 minutes | 118 | 59 | $207 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 112 | 111 | $168 |
In context: peer comparison
Among 73 peers in Phoenix Hospitalist Physician, average services per provider: 126. This provider delivers 8.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
366
Patients
256
Total drug cost
$34,162
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 46 | 24 | $395 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 41 | 17 | $381 |
| Prednisone | Generic | 35 | 35 | $349 |
| Cefuroxime (Cefuroxime Axetil) | Brand | 33 | 32 | $541 |
| Eliquis (Apixaban) | Brand | 32 | 15 | $20,512 |
| Pantoprazole Sodium | Generic | 30 | 24 | $302 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 27 | 22 | $668 |
| Azithromycin | Generic | 20 | 20 | $171 |
| Metoprolol Succinate | Generic | 19 | 0 | $159 |
| Symbicort (Budesonide/Formoterol Fumarate) | Brand | 19 | 16 | $7,840 |
Frequently asked questions
What is Dr. Richard Nierenberg's medical specialty?
Dr. Richard Nierenberg practices Hospitalist Physician in Phoenix, AZ.
Where does Dr. Richard Nierenberg practice?
Dr. Richard Nierenberg practices at 1800 E van Buren St, Phoenix, AZ 85006. Office phone: 6022518316.
What is Dr. Richard Nierenberg's NPI?
Dr. Richard Nierenberg's National Provider Identifier (NPI) is 1598870628, issued by NPPES.
Does Dr. Richard Nierenberg accept Medicare assignment?
Yes. Dr. Richard Nierenberg accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Richard Nierenberg commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.