Doctor profile · Federal record
Dr. Robert Feren, M.D.
Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Walnut Creek, CA
- NPI 1851453104
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1220 Rossmoor Pkwy
Walnut Creek, CA 945952501
(925) 947-3393
fax (925) 947-3396 - Mailing address
-
Dept 34929, P.O. Box 39000
San Francisco, CA 941390001
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- September 28, 2017
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A89317
- Medicaid
- CA #1851453104
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851453104. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,317
Distinct HCPCS
6
Medicare allowed
$167,946
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 707 | 276 | $119 | |
99239 |
Hospital discharge day management, more than 30 minutes | 274 | 260 | $115 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 166 | 163 | $173 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 79 | 49 | $79 | |
99291 |
Critical care, first 30-74 minutes | 78 | 26 | $211 | |
99497 |
Advance care planning, first 30 minutes | 13 | 13 | $76 |
In context: peer comparison
Among 20 peers in Walnut Creek Hospitalist Physician, average services per provider: 150. This provider delivers 8.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
159
Patients
108
Total drug cost
$11,245
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levofloxacin | Generic | 24 | 24 | $224 |
| Eliquis (Apixaban) | Brand | 19 | 14 | $10,162 |
| Prednisone | Generic | 19 | 19 | $47 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 18 | 18 | $135 |
| Furosemide | Generic | 13 | 11 | $40 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 11 | 11 | $103 |
| Azithromycin | Generic | 11 | 11 | $45 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 11 | 0 | $112 |
| Metoprolol Tartrate | Generic | 11 | 0 | $69 |
| Pantoprazole Sodium | Generic | 11 | 0 | $164 |
Hospital affiliations
Frequently asked questions
What is Dr. Robert Feren's medical specialty?
Dr. Robert Feren practices Hospitalist Physician in Walnut Creek, CA.
Where does Dr. Robert Feren practice?
Dr. Robert Feren practices at 1220 Rossmoor Pkwy, Walnut Creek, CA 945952501. Office phone: 9259473393.
What is Dr. Robert Feren's NPI?
Dr. Robert Feren's National Provider Identifier (NPI) is 1851453104, issued by NPPES.
Does Dr. Robert Feren accept Medicare assignment?
Yes. Dr. Robert Feren accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Feren 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); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.