Doctor profile · Federal record
Dr. William Kasimer
Anatomic Pathology Physician (CMS: Pathology) · Weymouth, MA
- NPI 1265485288
- Accepts Medicare
- MIPS 90.5 / 100 · 2023
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
85 Columbian St
Weymouth, MA 021902416
(781) 624-8397 - Mailing address
-
1342 Belmont St, Suite 205
Brockton, MA 023014436
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- February 12, 2026
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207ZP0101X — NUCC code
- State license (1)
- Massachusetts #60294
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265485288. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,724
Distinct HCPCS
10
Medicare allowed
$139,513
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 1,074 | 516 | $39 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 412 | 109 | $30 | |
86255 |
Screening test for antibody to noninfectious agent | 334 | 29 | $19 | |
88307 |
Pathology examination of tissue using a microscope, moderately high complexity | 303 | 146 | $87 | |
88112 |
Cell examination of specimen, selective cellular enhancement technique | 276 | 250 | $29 | |
87207 |
Special stain for inclusion bodies or parasites | 271 | 234 | $19 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 168 | 152 | $37 | |
86334 |
Immunologic analysis technique on serum (immunofixation) | 159 | 150 | $19 | |
88304 |
Pathology examination of tissue using a microscope, moderately low complexity | 123 | 110 | $12 | |
88360 |
Microscopic genetic analysis of tumor, manual | 107 | 40 | $44 |
In context: peer comparison
Among 1 peers in Weymouth Anatomic Pathology Physician, average services per provider: 143. This provider delivers 26× the peer median.Open Payments
Industry payments received
All-time total
$25
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| bioMerieux INC | 1 | $25.32 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. William Kasimer's medical specialty?
Dr. William Kasimer practices Anatomic Pathology Physician in Weymouth, MA.
Where does Dr. William Kasimer practice?
Dr. William Kasimer practices at 85 Columbian St, Weymouth, MA 021902416. Office phone: 7816248397.
What is Dr. William Kasimer's NPI?
Dr. William Kasimer's National Provider Identifier (NPI) is 1265485288, issued by NPPES.
Does Dr. William Kasimer accept Medicare assignment?
Yes. Dr. William Kasimer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Kasimer commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341); Screening test for antibody to noninfectious agent (HCPCS 86255). Source: CMS Medicare Physician & Other Practitioners file.