Darin Mccarthy , MSPT
Physical Therapist • Lowell, MA
176 Walker St
Lowell, MA 018543126
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 28, 2006; this date does not establish years in practice.
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Published CMS data list 2,588 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 97110 — Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility: 1,017 service units.
- 97140 — Therapy procedure using manual technique: 1,014 service units.
- 97112 — Therapy procedure to re-educate brain-to-nerve-to-muscle function: 262 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 8 records in the table · Guide: How to read Medicare Part B data
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More Medicare Part B services than 90% of clinicians listed under Physical Therapist in Lowell, MA (2024, 13 clinicians with data). Median for this group: 1,487. Middle half: 1,005 to 1,812.
More Medicare Part B services than 75% of clinicians listed under Physical Therapist in Massachusetts (2024, 1,977 clinicians with data). Median for this group: 1,481. Middle half: 777 to 2,430.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,228 in 2020 to 2,588 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
176 Walker St
Lowell, MA 018543126
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Orthopaedic Surgical Associates Of Lowell, P.C.. 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
1996
What Public CMS Data Show
Physical Therapist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
139 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $72,435 in 2024
The total amount Medicare approved for these services in 2024. 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, 2024.
Paid by Medicare
About $54,676 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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, 2024.
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 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
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.
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)
Darin Mccarthy 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.
Compared with the same specialty in Lowell and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Physical Therapist in Lowell, MA (2024, 13 clinicians with data). Median for this group: 1,487. Middle half: 1,005 to 1,812.
More Medicare Part B services than 75% of clinicians listed under Physical Therapist in Massachusetts (2024, 1,977 clinicians with data). Median for this group: 1,481. Middle half: 777 to 2,430.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Physical Therapist in Lowell, MA (2024, 13 clinicians with data). Median for this group: $40,826. Middle half: $27,569 to $57,625.
A higher Medicare-allowed amount than 75% of clinicians listed under Physical Therapist in Massachusetts (2024, 1,977 clinicians with data). Median for this group: $42,274. Middle half: $22,603 to $68,481.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Physical Therapist in Lowell, MA (2024, 13 clinicians with data). Median for this group: $31,562. Middle half: $20,612 to $44,497.
A higher Medicare payment amount than 75% of clinicians listed under Physical Therapist in Massachusetts (2024, 1,977 clinicians with data). Median for this group: $32,408. Middle half: $17,183 to $52,204.
67 active clinicians are listed under Physical Therapist with a practice address in Lowell, MA (7,104 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lowell
0% of these 67 clinicians have the CMS telehealth indicator.
26.9% of these 67 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 111% from 1,228 in 2020 to 2,588 in 2024.
- 2020: 1,228
- 2021: 1,324
- 2022: 1,329
- 2023: 918
- 2024: 2,588
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Medicare-allowed amount
Medicare-allowed amount increased 102% from $35,899 in 2020 to $72,435 in 2024.
- 2020: $35,899
- 2021: $39,657
- 2022: $40,534
- 2023: $26,643
- 2024: $72,435
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Paid by Medicare
Paid by Medicare increased 91% from $28,639 in 2020 to $54,676 in 2024.
- 2020: $28,639
- 2021: $30,366
- 2022: $31,523
- 2023: $20,916
- 2024: $54,676
Sources: CMS Medicare Physician & Other Practitioners (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 2019–2023 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, 2020–2024; 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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97110
Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes
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1,017 | 134 | $64.59 | $26.48 |
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97140
Therapy procedure using manual technique, each 15 minutes
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1,014 | 122 | $75.38 | $22.11 |
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97112
Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes
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262 | 63 | $62.60 | $35.43 |
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G0283
Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care
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140 | 38 | $31.44 | $9.53 |
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97161
Evaluation for physical therapy, typically 20 minutes
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57 | 55 | $136.40 | $109.54 |
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97164
Re-evaluation for physical therapy, typically 20 minutes
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46 | 39 | $108.04 | $75.73 |
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97535
Training for self-care or home management, each 15 minutes
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36 | 19 | $50.00 | $29.69 |
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97162
Evaluation for physical therapy, typically 30 minutes
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16 | 16 | $148.44 | $104.54 |
Source: CMS Part B by Provider and Service, 2024; 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: 225100000X
Physical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions that limit their abilities to move and perform functional activities in their daily lives. PTs examine each individual and develop a plan using treatment techniques to promote the ability to move, reduce pain, restore function, and prevent disability. In addition, PTs work with individuals to prevent the loss of mobility before it occurs by developing fitness- and wellness-oriented programs for healthier and more active lifestyles. PTs: 1.Diagnose and manage movement dysfunction and enhance physical and functional abilities. 2.Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health. 3.Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries. 4.Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems. 5.Address the negative effects attributable to unique personal and environmental factors as they relate to human performance. 6.PTs provide care for people in a variety of settings, including hospitals, private practices, outpatient clinics, home health agencies, schools, sports and fitness facilities, work settings, and nursing homes. State licensure is required in each state in which a PT practices.
NUCC Taxonomy Code: 225100000X
Physical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions that limit their abilities to move and perform functional activities in their daily lives. PTs examine each individual and develop a plan using treatment techniques to promote the ability to move, reduce pain, restore function, and prevent disability. In addition, PTs work with individuals to prevent the loss of mobility before it occurs by developing fitness- and wellness-oriented programs for healthier and more active lifestyles. PTs: 1.Diagnose and manage movement dysfunction and enhance physical and functional abilities. 2.Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health. 3.Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries. 4.Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems. 5.Address the negative effects attributable to unique personal and environmental factors as they relate to human performance. 6.PTs provide care for people in a variety of settings, including hospitals, private practices, outpatient clinics, home health agencies, schools, sports and fitness facilities, work settings, and nursing homes. State licensure is required in each state in which a PT practices.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICAL THERAPIST IN PRIVATE PRACTICE
I20040413001648
MA
7012901861
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
Orthopaedic Surgical Associates Of Lowell, P.c.
14 Research Pl, North Chelmsford, MA 018632460
Phone: 9784540706
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physical Therapist
Master of Science in Physical Therapy
Physical Therapist - Orthopedic
Doctor of Physical Therapy
Physical Therapist
Physical Therapist
Physical Therapist - Orthopedic
Doctor of Physical Therapy
Physical Therapist
Doctor of Physical Therapy
Physical Therapist
Career & Practice History
NPI enumerated June 28, 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 Physical Therapists in Lowell
- Dr. Kathryne Stowell, DPT
- Erica Compagnone, PT
- Dr. George Potamitis, PT, DPT, MS
- Dr. Courtney Donovan, DPT
- Kimberly Monette, PT
- Cassandra Feeney
Mailing Address
176 Walker St
Lowell, MA 018543126
Phone: 9784529252