Doctor profile · Federal record
Dr. Natalia Zielkiewicz, M.D.
Hospice and Palliative Medicine (Internal Medicine) Physician (CMS: Hospice/Palliative Care) · Walnut Creek, CA
- NPI 1033272729
- Accepts Medicare
- MIPS 85.7 / 100 · 2023
- 22 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
1450 Treat Blvd # 120
Walnut Creek, CA 945972168
(925) 296-9720 - Additional location
-
2700 Grant St, Suite 200
Concord, CA 945202266
(925) 677-0500 - Additional location
-
5161 Clayton RD Ste F
Concord, CA 945213157
(925) 677-0550 - 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
- March 7, 2023
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RH0002X — NUCC code
- State license (1)
- California #A96545
- Medicaid
- CA #1033272729
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033272729. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
349
Distinct HCPCS
5
Medicare allowed
$41,800
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 105 | 61 | $131 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 100 | 91 | $193 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 55 | 37 | $55 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 52 | 34 | $86 | |
G0316 |
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | 37 | 17 | $34 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 56. This provider delivers 6.2× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Natalia Zielkiewicz's medical specialty?
Dr. Natalia Zielkiewicz practices Hospice and Palliative Medicine (Internal Medicine) Physician in Walnut Creek, CA.
Where does Dr. Natalia Zielkiewicz practice?
Dr. Natalia Zielkiewicz practices at 1450 Treat Blvd # 120, Walnut Creek, CA 945972168. Office phone: 9252969720.
What is Dr. Natalia Zielkiewicz's NPI?
Dr. Natalia Zielkiewicz's National Provider Identifier (NPI) is 1033272729, issued by NPPES.
Does Dr. Natalia Zielkiewicz accept Medicare assignment?
Yes. Dr. Natalia Zielkiewicz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Natalia Zielkiewicz commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.