Daniel J Ainsworth , MMSC, PA-C
Physician Assistant • Boston, MA
55 Fruit St, Emergency Dept.
Boston, MA 021142621
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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Daniel Ainsworth is listed in NPPES under Physician Assistant.
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NPI assigned on February 24, 2010; this date does not establish years in practice.
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Published CMS data list 315 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:
- 99213 — Established patient outpatient office visit: 75 service units.
- 99214 — Established patient outpatient office visit: 53 service units.
- 87804 — Detection test by immunoassay with direct visual observation for influenza virus: 28 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 12 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 135 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:
- Prednisone — 41 prescription fills, including refills.
- Azithromycin — 18 prescription fills, including refills.
- Cephalexin — 18 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 all 7 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 75% of clinicians listed under Physician Assistant in Boston, MA (2024, 510 clinicians with data). Median for this group: 118. Middle half: 40 to 287.
Close to the middle for Medicare Part B services among clinicians listed under Physician Assistant in Massachusetts (2024, 2,142 clinicians with data). Median for this group: 222. Middle half: 79 to 552.
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 113 in 2020 to 315 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
55 Fruit St
Emergency Dept.
Boston, MA 021142621
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 2 distinct group names: Healthcare Partners Of Saratoga Ltd; Saratoga Hospital. 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
2009
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
185 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 $17,078 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 $12,438 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.
30-day fills
135 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
$868 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.
Open Payments general payments, program year 2024
All general payments: $97.38 across 2 records.
By nature of payment
- Food and Beverage: $77.38 across 1 record.
- Education: $20.00 across 1 record.
Reporting-company totals
- Boston Scientific Corporation: $77.38 across 1 record.
- CSL Behring: $20.00 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).
Years since graduation
17 years (graduated 2009)
CMS Doctors and Clinicians data list 2009 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
2010
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)
Daniel Ainsworth 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 Daniel Ainsworth 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 B services
More Medicare Part B services than 75% of clinicians listed under Physician Assistant in Boston, MA (2024, 510 clinicians with data). Median for this group: 118. Middle half: 40 to 287.
Close to the middle for clinicians listed under Physician Assistant in Massachusetts (2024, 2,142 clinicians with data). Median for this group: 222. Middle half: 79 to 552.
Medicare-allowed amount
A higher Medicare-allowed amount than 60% of clinicians listed under Physician Assistant in Boston, MA (2024, 510 clinicians with data). Median for this group: $10,838. Middle half: $3,776 to $24,245.
Close to the middle for clinicians listed under Physician Assistant in Massachusetts (2024, 2,142 clinicians with data). Median for this group: $19,073. Middle half: $6,686 to $39,911.
Paid by Medicare
A higher Medicare payment amount than 60% of clinicians listed under Physician Assistant in Boston, MA (2024, 510 clinicians with data). Median for this group: $7,962. Middle half: $2,814 to $18,094.
Close to the middle for clinicians listed under Physician Assistant in Massachusetts (2024, 2,142 clinicians with data). Median for this group: $14,188. Middle half: $5,025 to $29,930.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Physician Assistant in Boston, MA (2024, 574 clinicians with data). Median for this group: 92. Middle half: 27 to 292.
Close to the middle for clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: 175. Middle half: 52 to 564.
Part D drug cost
Close to the middle for clinicians listed under Physician Assistant in Boston, MA (2024, 574 clinicians with data). Median for this group: $1,258. Middle half: $294 to $26,549.
A lower Part D drug cost than 65% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: $2,484. Middle half: $458 to $50,541.
1,660 active clinicians are listed under Physician Assistant with a practice address in Boston, MA (4,715 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
15.4% of these 1,660 clinicians have the CMS telehealth indicator.
57.1% of these 1,660 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 179% from 113 in 2020 to 315 in 2024.
- 2020: 113
- 2021: 179
- 2022: 256
- 2023: 250
- 2024: 315
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Medicare-allowed amount
Medicare-allowed amount increased 39% from $12,286 in 2020 to $17,078 in 2024.
- 2020: $12,286
- 2021: $17,438
- 2022: $16,602
- 2023: $11,835
- 2024: $17,078
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Paid by Medicare
Paid by Medicare increased 25% from $9,929 in 2020 to $12,438 in 2024.
- 2020: $9,929
- 2021: $14,791
- 2022: $13,247
- 2023: $9,357
- 2024: $12,438
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 12 in 2015 to 135 in 2024.
- 2015: 12
- 2021: 50
- 2022: 91
- 2023: 111
- 2024: 135
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30-day fills
30-day fills went from 12 in 2015 to 135 in 2024.
- 2015: 12
- 2021: 50
- 2022: 91
- 2023: 111
- 2024: 135
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Part D drug cost
Part D drug cost went from $48 in 2015 to $868 in 2024.
- 2015: $48
- 2021: $193
- 2022: $1,050
- 2023: $1,071
- 2024: $868
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2024 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), 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 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $97.38.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
— | General | $77.38 |
| CSL Behring |
Education
In-kind items and services
|
Kcentra | General | $20.00 |
Source: CMS Open Payments, program year 2024, 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 2016–2023 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, 2017–2024; 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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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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75 | 74 | $364.72 | $65.17 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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53 | 53 | $414.45 | $89.67 |
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87804
Detection test by immunoassay with direct visual observation for influenza virus
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28 | 14 | $279.00 | $16.22 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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27 | 27 | $489.26 | $83.69 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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26 | 24 | $201.00 | $7.61 |
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80053
Blood test, comprehensive group of blood chemicals
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25 | 25 | $375.00 | $10.35 |
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93005
Routine electrocardiogram (ecg) using at least 12 leads with tracing
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16 | 14 | $306.00 | $5.63 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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15 | 15 | $520.60 | $127.77 |
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87426
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus
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14 | 14 | $184.00 | $34.62 |
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71046
X-ray of chest, 2 views
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13 | 13 | $613.00 | $21.61 |
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81001
Manual urinalysis test with examination using microscope, automated
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12 | 12 | $171.00 | $3.11 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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11 | 11 | $781.36 | $132.56 |
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.
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 |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 41 | 190 | $89.22 | 41 |
| Azithromycin | Azithromycin | 18 | 86 | $95.86 | 18 |
| Cephalexin | Cephalexin | 18 | 110 | $106.02 | 18 |
| Doxycycline Hyclate | Doxycycline Hyclate | 18 | 152 | $120.41 | 18 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 17 | 105 | $63.04 | 17 |
| Amoxicillin | Amoxicillin | 12 | 90 | $83.22 | 11 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 11 | 187 | $309.93 | 11 |
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: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20210604001836
NY
8921290958
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
Healthcare Partners Of Saratoga Ltd
6 Medical Park Dr, Malta, NY 120205051
Phone: 5182892020
Saratoga Hospital
3040 Route 50, Saratoga Springs, NY 128663073
Phone: 5185802273
Saratoga Hospital
3044 Route 50, Saratoga Springs, NY 128663073
Phone: 5188865800
Saratoga Hospital
211 Church St, Saratoga Springs, NY 128661003
Phone: 5185838421
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner
Psychologist
Doctor of Philosophy (Ph.D.)
Physical Medicine & Rehabilitation
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Doctor of Medicine (M.D.)
Emergency Medicine - Hospice and Palliative Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated February 24, 2010.
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 Physician Assistants in Boston
- Heidi Niell, PA-C
- Sierra Whitmore, PA-C
- Erica Smith, PA-C
- Kenneth Morhiser, PA-C
- Emily Axel
- Nikolas Wilde, PA-C
Mailing Address
55 Fruit St, Emergency Dept.
Boston, MA 021142621
Phone: 6177262000