Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 13 | 649 | 1,215 | $162,765 | $31,807 |
| 2022 | 11 | 439 | 820 | $113,155 | $23,009 |
| 2021 | 10 | 406 | 802 | $110,332 | $22,398 |
| 2020 | 12 | 446 | 952 | $133,488 | $28,240 |
All Medicare Procedures & Services
46 procedure records from CMS Medicare Utilization — Page 1 of 2
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 88350 | Antibody evaluation, each additional single antibody stain procedure | Facility | 2023 | 35 | 300 | $35,354 | $7,279 | 20.6% |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | Facility | 2023 | 128 | 153 | $23,448 | $4,736 | 20.2% |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | Facility | 2023 | 48 | 66 | $22,336 | $4,504 | 20.2% |
| 88346 | Antibody evaluation, initial single antibody stain procedure | Facility | 2023 | 120 | 149 | $24,436 | $4,413 | 18.1% |
| 88348 | Electron microscopy for diagnosis | Facility | 2023 | 33 | 33 | $10,515 | $2,107 | 20.0% |
| 88313 | Special stained specimen slides to examine tissue including interpretation and report | Facility | 2023 | 71 | 185 | $9,116 | $1,837 | 20.2% |
| 88321 | Surgical pathology consultation and report on referred slides prepared elsewhere | Facility | 2023 | 17 | 22 | $7,564 | $1,555 | 20.6% |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | Facility | 2023 | 18 | 72 | $8,312 | $1,541 | 18.5% |
| 88312 | Special stained specimen slides to identify organisms including interpretation and report | Facility | 2023 | 17 | 57 | $6,186 | $1,262 | 20.4% |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | Facility | 2023 | 28 | 31 | $6,355 | $888.55 | 14.0% |
| 84181 | Protein measurement | Facility | 2023 | 44 | 47 | $3,511 | $688.16 | 19.6% |
| 88311 | Preparation of tissue for examination by removing any calcium present | Facility | 2023 | 43 | 48 | $2,448 | $499.63 | 20.4% |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | Facility | 2023 | 47 | 52 | $3,184 | $494.77 | 15.5% |
| 88350 | Antibody evaluation, each additional single antibody stain procedure | Facility | 2022 | 26 | 227 | $26,437 | $5,688 | 21.5% |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | Facility | 2022 | 48 | 67 | $23,258 | $4,775 | 20.5% |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | Facility | 2022 | 101 | 134 | $21,114 | $4,322 | 20.5% |
| 88346 | Antibody evaluation, initial single antibody stain procedure | Facility | 2022 | 68 | 73 | $11,972 | $2,262 | 18.9% |
| 88348 | Electron microscopy for diagnosis | Facility | 2022 | 25 | 25 | $7,803 | $1,626 | 20.8% |
| 88313 | Special stained specimen slides to examine tissue including interpretation and report | Facility | 2022 | 54 | 135 | $6,823 | $1,405 | 20.6% |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | Facility | 2022 | 18 | 54 | $6,163 | $1,306 | 21.2% |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | Facility | 2022 | 20 | 20 | $4,100 | $596.60 | 14.6% |
| 84181 | Protein measurement | Facility | 2022 | 39 | 40 | $3,066 | $559.99 | 18.3% |
| 88311 | Preparation of tissue for examination by removing any calcium present | Facility | 2022 | 26 | 29 | $1,459 | $310.68 | 21.3% |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | Facility | 2022 | 14 | 16 | $960.00 | $157.41 | 16.4% |
| 88350 | Antibody evaluation, each additional single antibody stain procedure | Facility | 2021 | 28 | 248 | $30,046 | $6,341 | 21.1% |
About Rex Smith, MD PHD
Rex Smith, MD PHD is a Immunopathology healthcare provider based in Boston, Massachusetts. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 12/01/2005. The National Provider Identifier (NPI) number assigned to this provider is 1801870910.
As a Medicare-enrolled provider, Smith has provided services to 1,940 Medicare beneficiaries, totaling 3,789 services with total Medicare billing of $105,452. Data is available for 4 years (2020–2023), covering 46 distinct procedure/service records.
Practice Information
- Specialty Immunopathology
- Other Specialties Anatomic Pathology & Clinical Pathology
- Location Boston, MA
- Active Since 12/01/2005
- Last Updated 09/11/2025
- Taxonomy Code 207ZI0100X
- Entity Type Individual
- NPI Number 1801870910
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Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.
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