Dr. David Joswick , MD
Anesthesiology • Boston, MA
800 Washington St
Boston, MA 021111552
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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NPI assigned on June 8, 2006; this date does not establish years in practice.
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Published CMS data list 223 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 00811 — Anesthesia for other procedure on large bowel using an endoscope: 115 service units.
- 00731 — Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope: 56 service units.
- 00813 — Anesthesia for procedure on small and large bowel using an endoscope: 35 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 4 records in the table · Guide: How to read Medicare Part B data
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Medicare Part B services went from 83 in 2017 to 223 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
800 Washington St
Boston, MA 021111552
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Corning, NY. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Anesthesiology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
311 people with Original Medicare in 2020
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2020.
Medicare-allowed amount
About $18,846 in 2020
The total amount Medicare approved for these services in 2020. 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, 2020.
Paid by Medicare
About $14,418 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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, 2020.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Compared with the same specialty in Boston and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Joswick are from 2020.
1,082 active clinicians are listed under Anesthesiology with a practice address in Boston, MA (2,091 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
1.8% of these 1,082 clinicians have the CMS telehealth indicator.
69.7% of these 1,082 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 increased 169% from 83 in 2017 to 223 in 2020.
- 2017: 83
- 2018: 104
- 2019: 230
- 2020: 223
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Medicare-allowed amount
Medicare-allowed amount increased 97% from $9,556 in 2017 to $18,846 in 2020.
- 2017: $9,556
- 2018: $11,664
- 2019: $25,132
- 2020: $18,846
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Paid by Medicare
Paid by Medicare increased 85% from $7,775 in 2017 to $14,418 in 2020.
- 2017: $7,775
- 2018: $9,595
- 2019: $19,786
- 2020: $14,418
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2019 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, 2017–2020; 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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00811
Anesthesia for other procedure on large bowel using an endoscope
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115 | 115 | $841.92 | $80.58 |
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00731
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
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56 | 53 | $922.21 | $84.71 |
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00813
Anesthesia for procedure on small and large bowel using an endoscope
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35 | 35 | $1139.92 | $107.82 |
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00812
Anesthesia for exam of colon using an endoscope
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17 | 17 | $799.01 | $62.46 |
Source: CMS Part B by Provider and Service, 2020; 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: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Additional State Medicaid & Healthcare Payer Identifiers
Secondary Practice Locations
1 Guthrie Dr, Guthrie Corning Hospital
Corning, NY 148303696
Phone: 6079377200
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 800 WASHINGTON ST, BOSTON, MA 021111552 (Tel: 6176365000)
Registered at 800 WASHINGTON ST, BOSTON, MA 021111552 (Tel: 6176365000)
Additional practice office at 1 Guthrie Dr, Guthrie Corning Hospital, Corning, NY 148303696
Anesthesiology (license number reported to NPPES: NY 259903)
NPI status registered as active in NPPES database
Registered at 1 GUTHRIE DR, GUTHRIE CORNING HOSPITAL, CORNING, NY 148303696 (Tel: 6079377200)
Registered at 1 GUTHRIE DR, GUTHRIE CORNING HOSPITAL, CORNING, NY 148303696 (Tel: 6079377200)
Recorded as DAVID JOSWICK, M.D.
Anesthesiology (license number reported to NPPES: AZ 50540)
Registered at 1 GUTHRIE DR, GUTHRIE CORNING HOSPITAL, CORNING, NY 148303696 (Tel: 6079377200)
Registered at 1 GUTHRIE DR, GUTHRIE CORNING HOSPITAL, CORNING, NY 148303696 (Tel: 6079377200)
Anesthesiology (license number reported to NPPES: MA 219918)
NPI status registered as active in NPPES database
Registered at 1 ATWELL RD, COOPERSTOWN, NY 133261301 (Tel: 6075473153)
Registered at PO BOX 725, COOPERSTOWN, NY 133260725 (Tel: 6075473153)
Recorded as DAVID JOSWICK, M.D.
Anesthesiology (license number reported to NPPES: NY 259903)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Anesthesiology Specialists in Boston
- Dr. John Bellamente, MD, MS
- Dr. Nelson Thaemert, MD
- Dr. Erin Ciampa, MD, PhD
- Dr. Pritesh Topiwala, MD
- Dr. Tanya Hall, MD
- Dr. Ryan Levasseur, MD
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Mailing Address
800 Washington St
Boston, MA 021111552
Phone: 6176365000