Alyssa Desmarais , PA-C
Physician Assistant • Springfield, MA
3455 Main St Ste 5
Springfield, MA 011071147
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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Alyssa Desmarais is listed in NPPES under Physician Assistant.
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NPI assigned on August 15, 2017; this date does not establish years in practice.
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Published CMS data list 786 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:
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 531 service units.
- 99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 145 service units.
- 99306 — Initial nursing facility care with high level of medical decision making, per day: 69 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 all 4 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 202 Medicare Part D prescriptions, including refills, in 2018.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2018. Published rows only; this is not a quality measure.
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Published Part D records, 2018:
- Triamcinolone Acetonide — 50 prescription fills, including refills.
- Ketoconazole — 50 prescription fills, including refills.
- Clobetasol Propionate — 18 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2018. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 9 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 25 in 2017 to 786 in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2019.
Practice Location & Contact Primary Location
3455 Main St Ste 5
Springfield, MA 011071147
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
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $66,782 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 $50,364 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
212 standardized 30-day fills in 2018
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
$14,679 in 2018
The total cost of these prescriptions in 2018, 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, 2018.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
NPI first issued
2017
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 Springfield and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Alyssa Desmarais are from 2019.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Alyssa Desmarais are from 2018.
172 active clinicians are listed under Physician Assistant with a practice address in Springfield, MA (4,715 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Springfield
9.3% of these 172 clinicians have the CMS telehealth indicator.
69.2% of these 172 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 3044% from 25 in 2017 to 786 in 2019.
- 2017: 25
- 2018: 762
- 2019: 786
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Medicare-allowed amount
Medicare-allowed amount increased 3509% from $1,851 in 2017 to $66,782 in 2019.
- 2017: $1,851
- 2018: $42,050
- 2019: $66,782
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Paid by Medicare
Paid by Medicare increased 3330% from $1,468 in 2017 to $50,364 in 2019.
- 2017: $1,468
- 2018: $30,293
- 2019: $50,364
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Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2018 only.
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30-day fills
CMS data for 30-day fills are available for 2018 only.
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Part D drug cost
CMS data for Part D drug cost are available for 2018 only.
Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2018), 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 2016–2018 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, 2017–2019; 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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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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531 | 142 | $207.59 | $80.85 |
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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145 | 91 | $136.28 | $60.82 |
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99306
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
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69 | 68 | $252.00 | $146.83 |
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99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
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41 | 28 | $210.00 | $119.53 |
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 2018.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Triamcinolone Acetonide | Triamcinolone Acetonide | 50 | 1,142 | $782.03 | 34 |
| Ketoconazole | Ketoconazole | 50 | 1,303 | $1,505.20 | 23 |
| Clobetasol Propionate | Clobetasol Propionate | 18 | 549 | $4,716.18 | — |
| Fluocinonide | Fluocinonide | 16 | 393 | $1,452.54 | — |
| Doxycycline Hyclate | Doxycycline Hyclate | 14 | 404 | $536.54 | — |
| Mupirocin | Mupirocin | 14 | 210 | $197.85 | 12 |
| Betamethasone Dipropionate | Betamethasone Dipropionate | 14 | 293 | $2,638.16 | — |
| Clindamycin Phosphate | Clindamycin Phosphate | 13 | 334 | $1,508.78 | — |
| Fluorouracil | Fluorouracil | 13 | 269 | $1,341.46 | 12 |
Source: CMS Part D by Provider and Drug, 2018; 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.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Dermatology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant - Surgical
Physician Assistant (Certified)
Nurse Practitioner - Family
Nurse Practitioner
Physician Assistant
Physician Assistant
Career & Practice History
NPI enumerated August 15, 2017.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from September 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Springfield
- Georgina Njenga
- Hannah Reidy
- Mark Dutille, PA-C
- Erin Svrcek, PA-C
- Michayla Casella, PA-C
- Chelsea Harstad, PA-C
Mailing Address
96 Wildflower Cir
Westfield, MA 010854590
Phone: 4134541182