Doctor profile · Federal record
Dr. Peter Mazolewski, M.D.
Surgery Physician (CMS: General Surgery) · Specialist · Walnut Creek, CA
- NPI 1710076773
- Accepts Medicare
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
365 Lennon Ln Ste 290
Walnut Creek, CA 945985915
(925) 658-5076
fax (925) 658-5089
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- February 26, 2025
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- California #A84094
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710076773. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
281
Distinct HCPCS
6
Medicare allowed
$46,601
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 135 | 68 | $89 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 81 | 79 | $197 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 20 | 18 | $130 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 15 | $153 | |
47562 |
Removal of gallbladder using an endoscope | 16 | 16 | $692 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 12 | 12 | $197 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 42. This provider delivers 6.7× the peer median.Open Payments
Industry payments received
All-time total
$1,222
Transactions
12
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| INTUITIVE SURGICAL, INC. | 10 | $1,085.70 | |
| Davol Inc. | 1 | $112.54 | |
| Becton, Dickinson and Company | 1 | $23.45 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
28
Patients
28
Total drug cost
$81
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 14 | 14 | $54 |
| Tramadol Hcl | Generic | 14 | 14 | $27 |
Hospital affiliations
Frequently asked questions
What is Dr. Peter Mazolewski's medical specialty?
Dr. Peter Mazolewski practices Surgery Physician in Walnut Creek, CA.
Where does Dr. Peter Mazolewski practice?
Dr. Peter Mazolewski practices at 365 Lennon Ln Ste 290, Walnut Creek, CA 945985915. Office phone: 9256585076.
What is Dr. Peter Mazolewski's NPI?
Dr. Peter Mazolewski's National Provider Identifier (NPI) is 1710076773, issued by NPPES.
Does Dr. Peter Mazolewski accept Medicare assignment?
Yes. Dr. Peter Mazolewski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Peter Mazolewski commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.