Doctor profile · Federal record
Dr. Mark Nishiki, MD
Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Anatomic Pathology Physician · Stockton, CA
- NPI 1457385890
- Accepts Medicare
- 46 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1800 N California St
Stockton, CA 952046019
(209) 943-2000 - Mailing address
-
5700 Southwyck Blvd
Toledo, OH 436141509
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- April 3, 2024
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207ZP0102X — NUCC code
- State license (1)
- California #G56041
- Medicaid
- CA #14573885890
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457385890. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,089
Distinct HCPCS
10
Medicare allowed
$51,710
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 383 | 210 | $38 | |
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 252 | 118 | $76 | |
88312 |
Special stained specimen slides to identify organisms including interpretation and report | 74 | 52 | $27 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 73 | 23 | $29 | |
88307 |
Pathology examination of tissue using a microscope, moderately high complexity | 63 | 52 | $84 | |
88312 |
Special stained specimen slides to identify organisms including interpretation and report | 42 | 37 | $121 | |
88112 |
Cell examination of specimen, selective cellular enhancement technique | 40 | 33 | $28 | |
88300 |
Pathology examination of tissue using a microscope, limited examination | 38 | 35 | $4 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 38 | 14 | $12 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 34 | 28 | $35 |
In context: peer comparison
Among 4 peers in Stockton Anatomic Pathology & Clinical Pathology Physician, average services per provider: 83. This provider delivers 13× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Mark Nishiki's medical specialty?
Dr. Mark Nishiki practices Anatomic Pathology & Clinical Pathology Physician in Stockton, CA.
Where does Dr. Mark Nishiki practice?
Dr. Mark Nishiki practices at 1800 N California St, Stockton, CA 952046019. Office phone: 2099432000.
What is Dr. Mark Nishiki's NPI?
Dr. Mark Nishiki's National Provider Identifier (NPI) is 1457385890, issued by NPPES.
Does Dr. Mark Nishiki accept Medicare assignment?
Yes. Dr. Mark Nishiki accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Nishiki commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to identify organisms including interpretation and report (HCPCS 88312). Source: CMS Medicare Physician & Other Practitioners file.