Dr. Joseph H Bahn , DPM
Orthopaedic Surgery • Boston, MA
Massachusetts General Hospital, 55 Fruit Street
Boston, MA 02114
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. Joseph Bahn is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on July 1, 2014; this date does not establish years in practice.
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Published CMS data list 85 Original Medicare Part B services in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Published rows only; this is not a quality measure.
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Published Part B service records, 2019:
- 11721 — Removal of fingernails or toenails, 6 or more nails: 58 service units.
- 11720 — Removal of fingernails or toenails, 1-5 nails: 27 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2018 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2019). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 45 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Terbinafine Hcl — 21 prescription fills, including refills.
- Clindamycin Hcl — 13 prescription fills, including refills.
- Prednisone — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Orthopaedic Surgery in Boston, MA (2024, 95 clinicians with data). Median for this group: 50. Middle half: 19 to 117.
Fewer Part D prescriptions than 65% of clinicians listed under Orthopaedic Surgery in Massachusetts (2024, 319 clinicians with data). Median for this group: 81. Middle half: 36 to 226.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 64 in 2018 to 85 in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2019.
Practice Location & Contact Primary Location
Massachusetts General Hospital
55 Fruit Street
Boston, MA 02114
CMS Doctors and Clinicians lists 1 group name: Southern California Permanente Medical Group. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2013
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $3,528 in 2019
The total amount Medicare approved for these services in 2019. 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, 2019.
Paid by Medicare
About $2,048 in 2019
The part of the Medicare-allowed amount that Medicare itself paid in 2019, 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, 2019.
30-day fills
45 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$365 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
Years since graduation
13 years (graduated 2013)
CMS Doctors and Clinicians data list 2013 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2014
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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.
Enrolled in Medicare (PECOS)
Dr. Bahn has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Bahn as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Boston and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Orthopaedic Surgery in Boston, MA (2024, 95 clinicians with data). Median for this group: 50. Middle half: 19 to 117.
Fewer Part D prescriptions than 65% of clinicians listed under Orthopaedic Surgery in Massachusetts (2024, 319 clinicians with data). Median for this group: 81. Middle half: 36 to 226.
Part D drug cost
Close to the middle for clinicians listed under Orthopaedic Surgery in Boston, MA (2024, 95 clinicians with data). Median for this group: $221. Middle half: $76 to $934.
Close to the middle for clinicians listed under Orthopaedic Surgery in Massachusetts (2024, 319 clinicians with data). Median for this group: $460. Middle half: $145 to $1,460.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Bahn are from 2019.
265 active clinicians are listed under Orthopaedic Surgery with a practice address in Boston, MA (692 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
20.8% of these 265 clinicians have the CMS telehealth indicator.
54.3% of these 265 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 33% from 64 in 2018 to 85 in 2019.
- 2018: 64
- 2019: 85
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Medicare-allowed amount
Medicare-allowed amount decreased 19% from $4,373 in 2018 to $3,528 in 2019.
- 2018: $4,373
- 2019: $3,528
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Paid by Medicare
Paid by Medicare decreased 41% from $3,464 in 2018 to $2,048 in 2019.
- 2018: $3,464
- 2019: $2,048
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 76% from 184 in 2020 to 45 in 2024.
- 2020: 184
- 2021: 151
- 2022: 97
- 2023: 84
- 2024: 45
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30-day fills
30-day fills decreased 75% from 184 in 2020 to 45 in 2024.
- 2020: 184
- 2021: 152
- 2022: 97
- 2023: 84
- 2024: 45
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Part D drug cost
Part D drug cost went from $985 in 2020 to $365 in 2024.
- 2020: $985
- 2021: $1,340
- 2022: $517
- 2023: $595
- 2024: $365
Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, 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 2017–2018 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, 2018–2019; 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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11721
Removal of fingernails or toenails, 6 or more nails
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58 | 52 | $102.24 | $50.54 |
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11720
Removal of fingernails or toenails, 1-5 nails
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27 | 14 | $45.26 | $22.10 |
Source: CMS Part B by Provider and Service, 2019; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Terbinafine Hcl | Terbinafine Hcl | 21 | 562 | $123.26 | — |
| Clindamycin Hcl | Clindamycin Hcl | 13 | 130 | $168.74 | — |
| Prednisone | Prednisone | 11 | 61 | $73.15 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207X00000X
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PODIATRY
I20180131002181
CA
5698992469
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Southern California Permanente Medical Group
9961 Sierra Ave, Fontana, CA 923356720
Phone: 9094275000
Southern California Permanente Medical Group
1301 California St, Redlands, CA 923742910
Phone: 9098093222
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Podiatrist - Foot & Ankle Surgery
Podiatrist
Doctor of Podiatric Medicine
Podiatrist - Foot Surgery
Doctor of Podiatric Medicine, Doctor of Philosophy (Ph.D.)
Podiatrist
Doctor of Podiatric Medicine
Podiatrist
Doctor of Podiatric Medicine
Podiatrist
Doctor of Podiatric Medicine
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, BOSTON, MA 02114 (Tel: 6177263487)
Registered at MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, BOSTON, MA 02114 (Tel: 6177263487)
Recorded as JOSEPH BAHN, DPM
Orthopaedic Surgery (license number reported to NPPES: MA L-1312)
NPI status registered as active in NPPES database
Registered at MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, BOSTON, MA 02114 (Tel: 6177263487)
Registered at MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, BOSTON, MA 02114 (Tel: 6177263487)
Recorded as JOSEPH BAHN, DPM
Orthopaedic Surgery (license number reported to NPPES: MA L-1312)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Orthopaedic Surgery Specialists in Boston
- Dr. Jack Bragg, MD
- Dr. Dennis Burke, MD
- Stephan Bruni, NURSE PRACTITIONER
- Dr. Gregory Brick, MBCHB
- Dr. Christopher Bono, MD
- Asad Ashraf
More public profiles in Massachusetts
Directory navigation, in NPI number order.
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- Eric Osborn, MD, PhD Internal Medicine - Interventional Cardiology · Boston
- Zamar Raza, MD Family Medicine · Bedford
- Deirdre Keogh, NP Nurse Practitioner - Acute Care · Boston
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- Evelyn Hale, MD Psychiatry & Neurology - Psychiatry · Norwood
- Kerry O'connor, NP Nurse Practitioner - Adult Health · Worcester
- Susan Aberle, DC Chiropractor · Falmouth
- Diane Mcmullin, MD Internal Medicine - Geriatric Medicine · Cambridge
Mailing Address
Massachusetts General Hospital, 55 Fruit Street
Boston, MA 02114
Phone: 6177263487