Dr. David Joseph Corwin , MD
Pathology - Anatomic Pathology & Clinical Pathology • Seattle, WA
747 Broadway
Seattle, WA 981224307
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. David Corwin is listed in NPPES under Pathology - Anatomic Pathology & Clinical Pathology.
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NPI assigned on March 16, 2006; this date does not establish years in practice.
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Published CMS data list 695 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 88305 — Pathology examination of tissue using a microscope, intermediate complexity: 147 service units.
- 88313 — Special stained specimen slides to examine tissue including interpretation and report: 144 service units.
- 88341 — Special stained specimen slides to examine tissue, each additional procedure: 84 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See all 9 records in the table · Guide: How to read Medicare Part B data
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Medicare Part B services went from 840 in 2017 to 695 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2021.
Practice Location & Contact Primary Location
747 Broadway
Seattle, WA 981224307
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Pathology - Anatomic Pathology & Clinical Pathology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $26,032 in 2021
The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.
Paid by Medicare
About $20,837 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $65.11 in 2019
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2019.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Seattle and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Corwin are from 2021.
137 active clinicians are listed under Pathology - Anatomic Pathology & Clinical Pathology with a practice address in Seattle, WA (330 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Seattle
0% of these 137 clinicians have the CMS telehealth indicator.
55.5% of these 137 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 17% from 840 in 2017 to 695 in 2021.
- 2017: 840
- 2018: 1,175
- 2019: 1,173
- 2020: 961
- 2021: 695
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Medicare-allowed amount
Medicare-allowed amount decreased 21% from $33,150 in 2017 to $26,032 in 2021.
- 2017: $33,150
- 2018: $45,766
- 2019: $45,927
- 2020: $37,629
- 2021: $26,032
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Paid by Medicare
Paid by Medicare decreased 21% from $26,337 in 2017 to $20,837 in 2021.
- 2017: $26,337
- 2018: $36,153
- 2019: $36,466
- 2020: $29,868
- 2021: $20,837
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2019 only.
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Open Payments (2019), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2019 (payments made January 1 – December 31, 2019): fewer than 11 records totaling $65.11.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Stemline Therapeutics Inc. |
Food and Beverage
In-kind items and services
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ELZONRIS | General | $65.11 |
Source: CMS Open Payments, program year 2019, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2020 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2021; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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88305
Pathology examination of tissue using a microscope, intermediate complexity
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147 | 78 | $191.50 | $40.52 |
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88313
Special stained specimen slides to examine tissue including interpretation and report
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144 | 63 | $65.50 | $13.05 |
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88341
Special stained specimen slides to examine tissue, each additional procedure
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84 | 30 | $164.50 | $30.93 |
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88360
Microscopic genetic analysis of tumor, manual
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76 | 50 | $153.00 | $45.58 |
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85097
Bone marrow, smear interpretation
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67 | 61 | $161.00 | $52.28 |
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88189
Flow cytometry technique for dna or cell analysis, 16 or more markers
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64 | 60 | $198.00 | $90.10 |
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88311
Preparation of tissue for examination by removing any calcium present
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59 | 55 | $45.00 | $13.53 |
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88342
Special stained specimen slides to examine tissue, initial procedure
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43 | 38 | $164.50 | $38.07 |
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88187
Flow cytometry technique for dna or cell analysis, 2 to 8 markers
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11 | 11 | $173.00 | $39.08 |
Source: CMS Part B by Provider and Service, 2021; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207ZP0102X
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.
NUCC Taxonomy Code: 207ZH0000X
A hematopathologist is expert in diseases that affect blood cells, blood clotting mechanisms, bone marrow and lymph nodes. This physician has the knowledge and technical skills essential for the laboratory diagnosis of anemias, leukemias, lymphomas, bleeding disorders and blood clotting disorders.
Additional State Medicaid & Healthcare Payer Identifiers
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated March 16, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Pathology - Anatomic Pathology & Clinical Pathology Specialists in Seattle
- Dr. Nicholas Reder, MD, MPH
- Dr. Shane Anderson, MD PHD
- Dr. Charles Hunter, MD
- Dr. Alireza Torabi, MD, PhD
- Dr. Suzanne Dintzis, MD
- Dr. Yanelba Toribio, MD
Mailing Address
Po Box 3941
Seattle, WA 981243941
Phone: 2063862676