Active NPI 1265485288 Individual Practitioner Male Practitioner

William D Kasimer

Pathology - Anatomic Pathology • Weymouth, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

William Kasimer is a certified Pathology - Anatomic Pathology practicing in Weymouth, MA. With approximately 42 years of clinical experience since graduating from University Of Pittsburgh School Of Medicine in 1984, William Kasimer delivers high-quality medical care to the local community at 85 COLUMBIAN ST.

William Kasimer is affiliated with Metro South Pathology, Inc. and accepts Medicare assignment.

Frequently performed procedures and clinical services include pathology examination of tissue using a microscope, intermediate complexity, screening test for antibody to noninfectious agent, special stained specimen slides to examine tissue. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

85 Columbian St

Weymouth, MA 021902416

Telephone 7816248397

Associated Practice Facility / Clinic

🏢 Metro South Pathology, Inc. Facility NPI 1598870800

Medicare Profile & Education

Medical School

University Of Pittsburgh School Of Medicine

Graduation Year

1984

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Pathology - Anatomic Pathology in Weymouth, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

42 Yrs Matches City Avg

City Avg: 42.0 Yrs

State Avg: 35.7 Yrs

Regional Practice Density

1 Specialists

Practicing in Weymouth, MA (303 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

79.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Kasimer (42 Years) 42 Yrs

Weymouth Specialty Average (42.0 Years) 42.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,217	552	$181.00	$38.51
86255 Screening test for antibody to noninfectious agent	931	57	$44.00	$18.54
88341 Special stained specimen slides to examine tissue	322	85	$150.00	$29.00
88112 Cell examination of specimen, selective cellular enhancement technique	316	287	$183.00	$28.53
87207 Special stain for inclusion bodies or parasites	267	230	$49.00	$18.57
88307 Pathology examination of tissue using a microscope, moderately high complexity	255	136	$285.00	$84.64
88342 Special stained specimen slides to examine tissue, initial procedure	163	131	$150.00	$35.87
86334 Immunologic analysis technique on serum (immunofixation)	131	121	$49.00	$18.53
88304 Pathology examination of tissue using a microscope, moderately low complexity	117	98	$166.00	$11.72
84166 Protein measurement, body fluid	89	85	$56.00	$18.53
88360 Microscopic genetic analysis of tumor	88	36	$176.00	$42.86
88311 Preparation of tissue for examination by removing any calcium present	64	55	$44.00	$12.48
84165 Protein measurement, serum	50	50	$60.00	$18.53
88305 Pathology examination of tissue using a microscope, intermediate complexity	42	30	$318.00	$71.77
88313 Special stained specimen slides to examine tissue including interpretation and report	41	24	$42.00	$12.47
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	39	39	$1803.00	$184.05
88344 Special stained specimen slides to examine tissue	38	21	$299.00	$39.80
88302 Pathology examination of tissue using a microscope	27	27	$62.00	$7.12
76098 X-ray of surgical specimen	25	22	$54.00	$15.99
88313 Special stained specimen slides to examine tissue including interpretation and report	25	12	$305.00	$76.52
88331 Pathology examination of specimen during surgery, first tissue block	23	20	$216.00	$62.40
88173 Evaluation of fine needle aspirate with interpretation and report	22	17	$245.00	$72.54
85097 Bone marrow, smear interpretation	19	19	$247.00	$76.68
86335 Immunologic analysis technique on body fluid, other fluids with concentration	18	18	$52.00	$18.53
88309 Pathology examination of tissue using a microscope, high complexity	17	17	$429.00	$149.98
88300 Pathology examination of tissue using a microscope, limited examination	12	12	$41.00	$4.61
88311 Preparation of tissue for examination by removing any calcium present	12	12	$76.00	$20.07
85097 Bone marrow, smear interpretation	11	11	$177.00	$50.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,074	516	$181.00	$39.26
88341 Special stained specimen slides to examine tissue	412	109	$150.00	$29.82
86255 Screening test for antibody to noninfectious agent	334	29	$44.00	$18.75
88307 Pathology examination of tissue using a microscope, moderately high complexity	303	146	$285.00	$87.03
88112 Cell examination of specimen, selective cellular enhancement technique	276	250	$183.00	$28.97
87207 Special stain for inclusion bodies or parasites	271	234	$49.00	$18.74
88342 Special stained specimen slides to examine tissue, initial procedure	168	152	$150.00	$36.70
86334 Immunologic analysis technique on serum (immunofixation)	159	150	$49.00	$18.79
88304 Pathology examination of tissue using a microscope, moderately low complexity	123	110	$166.00	$11.97
88360 Microscopic genetic analysis of tumor	107	40	$176.00	$43.94
84166 Protein measurement, body fluid	77	74	$56.00	$18.59
88311 Preparation of tissue for examination by removing any calcium present	61	55	$44.00	$13.07
88313 Special stained specimen slides to examine tissue including interpretation and report	52	28	$42.00	$12.66
84165 Protein measurement, serum	46	45	$60.00	$18.79
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	40	40	$1803.00	$187.31
88331 Pathology examination of specimen during surgery, first tissue block	37	28	$216.00	$65.69
88344 Special stained specimen slides to examine tissue	27	17	$299.00	$40.34
76098 X-ray of surgical specimen	25	20	$54.00	$16.20
88309 Pathology examination of tissue using a microscope, high complexity	22	22	$429.00	$153.23
88302 Pathology examination of tissue using a microscope	22	20	$62.00	$7.22
88300 Pathology examination of tissue using a microscope, limited examination	17	17	$41.00	$4.67
86335 Immunologic analysis technique on body fluid, other fluids with concentration	17	17	$52.00	$18.79
88305 Pathology examination of tissue using a microscope, intermediate complexity	16	16	$318.00	$78.18
85097 Bone marrow, smear interpretation	13	13	$177.00	$51.15
88173 Evaluation of fine needle aspirate with interpretation and report	13	13	$245.00	$69.60
88173 Evaluation of fine needle aspirate with interpretation and report	12	11	$569.00	$175.49

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,420	496	$181.00	$40.90
88341 Special stained specimen slides to examine tissue	379	94	$150.79	$30.65
88307 Pathology examination of tissue using a microscope, moderately high complexity	293	121	$285.00	$90.19
88112 Cell examination of specimen, selective cellular enhancement technique	273	244	$183.00	$30.17
88342 Special stained specimen slides to examine tissue, initial procedure	169	147	$150.00	$37.78
88304 Pathology examination of tissue using a microscope, moderately low complexity	116	101	$166.00	$12.45
88360 Microscopic genetic analysis of tumor	105	38	$176.00	$45.29
87207 Special stain for inclusion bodies or parasites	77	68	$49.00	$19.74
86334 Immunologic analysis technique on serum (immunofixation)	50	46	$49.00	$19.75
88311 Preparation of tissue for examination by removing any calcium present	42	39	$44.00	$13.59
88313 Special stained specimen slides to examine tissue including interpretation and report	36	19	$42.00	$13.14
88305 Pathology examination of tissue using a microscope, intermediate complexity	34	30	$318.00	$69.18
88344 Special stained specimen slides to examine tissue	28	11	$299.00	$41.86
88300 Pathology examination of tissue using a microscope, limited examination	25	23	$41.00	$4.85
76098 X-ray of surgical specimen	23	18	$54.00	$16.87
84166 Protein measurement, body fluid	20	19	$56.00	$19.78
88309 Pathology examination of tissue using a microscope, high complexity	18	18	$429.00	$158.37
88173 Evaluation of fine needle aspirate with interpretation and report	18	16	$245.00	$76.49
88331 Pathology examination of specimen during surgery, first tissue block	17	16	$216.00	$67.89
88173 Evaluation of fine needle aspirate with interpretation and report	16	13	$569.00	$165.54
88311 Preparation of tissue for examination by removing any calcium present	13	12	$76.00	$17.35
85097 Bone marrow, smear interpretation	13	13	$247.00	$78.23
88302 Pathology examination of tissue using a microscope	13	12	$62.00	$7.50
85097 Bone marrow, smear interpretation	12	12	$177.00	$52.46
84165 Protein measurement, serum	11	11	$60.00	$19.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,225	470	$176.00	$41.40
88341 Special stained specimen slides to examine tissue	370	78	$145.18	$31.46
88112 Cell examination of specimen, selective cellular enhancement technique	234	212	$178.05	$30.61
88307 Pathology examination of tissue using a microscope, moderately high complexity	219	107	$277.32	$91.77
88342 Special stained specimen slides to examine tissue, initial procedure	145	127	$145.31	$38.72
88304 Pathology examination of tissue using a microscope, moderately low complexity	120	101	$162.04	$12.61
88360 Microscopic genetic analysis of tumor	89	28	$179.19	$46.35
88313 Special stained specimen slides to examine tissue including interpretation and report	66	34	$42.00	$13.35
88311 Preparation of tissue for examination by removing any calcium present	58	51	$45.10	$13.77
87207 Special stain for inclusion bodies or parasites	55	48	$49.00	$20.12
88300 Pathology examination of tissue using a microscope, limited examination	33	27	$40.21	$4.93
88305 Pathology examination of tissue using a microscope, intermediate complexity	27	21	$310.22	$80.62
76098 X-ray of surgical specimen	26	20	$42.92	$17.06
88344 Special stained specimen slides to examine tissue	25	13	$290.00	$42.14
88173 Evaluation of fine needle aspirate with interpretation and report	23	21	$217.74	$78.06
88302 Pathology examination of tissue using a microscope	17	16	$60.12	$7.61
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	15	15	$1750.00	$196.00
88173 Evaluation of fine needle aspirate with interpretation and report	11	11	$363.64	$181.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	876	438	$175.00	$43.05
88341 Special stained specimen slides to examine tissue	346	87	$145.00	$32.33
88112 Cell examination of specimen, selective cellular enhancement technique	257	246	$177.00	$31.40
88307 Pathology examination of tissue using a microscope, moderately high complexity	226	100	$276.00	$95.03
88342 Special stained specimen slides to examine tissue, initial procedure	174	158	$145.00	$40.26
88304 Pathology examination of tissue using a microscope, moderately low complexity	151	126	$161.00	$13.00
88360 Microscopic genetic analysis of tumor	100	32	$180.00	$48.17
88311 Preparation of tissue for examination by removing any calcium present	57	52	$40.00	$14.18
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	38	38	$1750.00	$202.52
88313 Special stained specimen slides to examine tissue including interpretation and report	37	20	$42.00	$13.75
88312 Special stained specimen slides to identify organisms including interpretation and report	35	14	$59.00	$30.19
88173 Evaluation of fine needle aspirate with interpretation and report	31	29	$212.00	$80.97
88331 Pathology examination of specimen during surgery, first tissue block	31	18	$186.00	$71.84
88300 Pathology examination of tissue using a microscope, limited examination	30	26	$40.00	$5.11
88302 Pathology examination of tissue using a microscope	28	23	$60.00	$7.87
88305 Pathology examination of tissue using a microscope, intermediate complexity	18	16	$308.00	$81.46
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	16	16	$241.00	$113.19
88309 Pathology examination of tissue using a microscope, high complexity	11	11	$416.00	$167.50

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	973	492	$175.00	$42.46
88341 Special stained specimen slides to examine tissue	380	91	$145.00	$31.90
88307 Pathology examination of tissue using a microscope, moderately high complexity	346	171	$276.00	$92.20
88112 Cell examination of specimen, selective cellular enhancement technique	283	261	$177.00	$31.39
88304 Pathology examination of tissue using a microscope, moderately low complexity	192	166	$161.00	$12.75
88342 Special stained specimen slides to examine tissue, initial procedure	177	146	$145.00	$39.77
88360 Microscopic genetic analysis of tumor	98	29	$180.00	$47.65
88311 Preparation of tissue for examination by removing any calcium present	59	49	$40.00	$13.97
88331 Pathology examination of specimen during surgery, first tissue block	58	37	$186.00	$70.85
88300 Pathology examination of tissue using a microscope, limited examination	42	42	$40.00	$5.06
88313 Special stained specimen slides to examine tissue including interpretation and report	42	22	$42.00	$13.55
88305 Pathology examination of tissue using a microscope, intermediate complexity	38	35	$308.00	$78.70
88112 Cell examination of specimen, selective cellular enhancement technique	36	19	$113.33	$37.98
88302 Pathology examination of tissue using a microscope	31	24	$60.00	$7.76
88309 Pathology examination of tissue using a microscope, high complexity	28	28	$416.00	$165.77
88173 Evaluation of fine needle aspirate with interpretation and report	27	26	$212.00	$77.23
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	15	15	$1750.00	$199.29
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	11	11	$241.00	$112.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,058	513	$175.13	$42.38
88307 Pathology examination of tissue using a microscope, moderately high complexity	311	150	$276.00	$93.34
88112 Cell examination of specimen, selective cellular enhancement technique	262	131	$112.55	$39.53
88341 Special stained specimen slides to examine tissue	221	54	$145.00	$31.72
88304 Pathology examination of tissue using a microscope, moderately low complexity	155	131	$161.00	$12.89
88342 Special stained specimen slides to examine tissue, initial procedure	142	124	$145.00	$39.73
88360 Microscopic genetic analysis of tumor	94	28	$180.00	$49.84
88112 Cell examination of specimen, selective cellular enhancement technique	82	78	$176.12	$31.32
88311 Preparation of tissue for examination by removing any calcium present	64	53	$40.17	$13.99
88305 Pathology examination of tissue using a microscope, intermediate complexity	58	54	$232.03	$56.29
88331 Pathology examination of specimen during surgery, first tissue block	55	41	$186.00	$70.99
88300 Pathology examination of tissue using a microscope, limited examination	53	51	$40.66	$4.97
88313 Special stained specimen slides to examine tissue including interpretation and report	48	27	$46.88	$13.33
88304 Pathology examination of tissue using a microscope, moderately low complexity	41	37	$180.32	$19.70
88173 Evaluation of fine needle aspirate with interpretation and report	40	35	$212.00	$79.56
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method	38	19	$1112.63	$244.86
88312 Special stained specimen slides to identify organisms including interpretation and report	31	13	$59.00	$29.75
88309 Pathology examination of tissue using a microscope, high complexity	28	28	$416.00	$166.07
88302 Pathology examination of tissue using a microscope	18	18	$60.00	$8.06
88363 Examination of archival tissue for genetic analysis	14	14	$60.00	$22.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,334	621	$175.00	$41.69
88341 Special stained specimen slides to examine tissue	353	72	$145.00	$31.32
88307 Pathology examination of tissue using a microscope, moderately high complexity	299	150	$276.00	$92.66
88342 Special stained specimen slides to examine tissue, initial procedure	268	222	$145.00	$39.17
88313 Special stained specimen slides to examine tissue including interpretation and report	177	124	$42.00	$13.06
88304 Pathology examination of tissue using a microscope, moderately low complexity	139	125	$161.00	$12.59
88360 Microscopic genetic analysis of tumor	111	35	$180.00	$59.96
88112 Cell examination of specimen, selective cellular enhancement technique	100	90	$177.00	$30.49
88331 Pathology examination of specimen during surgery, first tissue block	91	59	$186.00	$69.60
88311 Preparation of tissue for examination by removing any calcium present	73	64	$40.00	$13.94
88173 Evaluation of fine needle aspirate with interpretation and report	61	57	$212.00	$78.10
88305 Pathology examination of tissue using a microscope, intermediate complexity	59	52	$274.19	$66.22
88300 Pathology examination of tissue using a microscope, limited examination	42	39	$40.00	$4.85
88309 Pathology examination of tissue using a microscope, high complexity	36	36	$416.00	$163.81
88304 Pathology examination of tissue using a microscope, moderately low complexity	24	21	$214.63	$31.11
88173 Evaluation of fine needle aspirate with interpretation and report	22	18	$313.18	$167.59
88363 Examination of archival tissue for genetic analysis	19	19	$60.00	$21.43
88312 Special stained specimen slides to identify organisms including interpretation and report	19	11	$59.00	$29.77
88302 Pathology examination of tissue using a microscope	16	16	$60.00	$7.90
88333 Pathology cytologic examination of specimen during surgery, initial site	14	14	$200.00	$69.96
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	11	11	$241.00	$111.41

Medical Specialties & State Licenses

Pathology - Anatomic Pathology Primary Specialty

NUCC Taxonomy Code: 207ZP0101X

State License MA 60294

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Hospital & Practice Group Affiliations

Metro South Pathology, Inc.

55 Fogg Rd, South Weymouth, MA 021902432

Phone: 7813408397

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

1 Associated Practitioners

Dr. Peter Ferlisi , MD

Pathology - Anatomic Pathology & Clinical Pathology

NPI 1467430769

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active May 11, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location May 11, 2015

Registered at 85 COLUMBIAN ST, WEYMOUTH, MA 021902416 (Tel: 7816248397)

📍

Updated Business Mailing Address May 11, 2015

Registered at 1342 BELMONT ST, SUITE 205, BROCKTON, MA 023014436 (Tel: 7816248397)

👤

Provider Name / Credentials Updated May 11, 2015

Recorded as WILLIAM KASIMER

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 11, 2015

Pathology (License #60294 in MA)

🟢

Initial NPI Registration & Enumeration May 19, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1265485288

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: May 19, 2006

Last Update: February 12, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1342 Belmont St, Suite 205

Brockton, MA 023014436

Phone: 7816248397

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.