Alfred K Sloss , PA-C
Physician Assistant • Worcester, MA
55 Lake Ave N, Department Of Surgery
Worcester, MA 016550002
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 February 22, 2006; this date does not establish years in practice.
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Published CMS data list 540 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 278 service units.
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 197 service units.
- 99356 — Prolonged inpatient or observation hospital service, first hour: 43 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). 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 124 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Warfarin Sodium — 36 prescription fills, including refills.
- Lorazepam — 26 prescription fills, including refills.
- Tramadol Hcl — 23 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 711 in 2017 to 540 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2021.
Practice Location & Contact Primary Location
55 Lake Ave N
Department Of Surgery
Worcester, MA 016550002
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 $37,402 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $26,297 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
124 standardized 30-day fills in 2021
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
$2,750 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
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; 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 Worcester and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Alfred Sloss are from 2021.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Alfred Sloss are from 2021.
425 active clinicians are listed under Physician Assistant with a practice address in Worcester, MA (4,715 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Worcester
15.8% of these 425 clinicians have the CMS telehealth indicator.
69.4% of these 425 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 decreased 24% from 711 in 2017 to 540 in 2021.
- 2017: 711
- 2018: 753
- 2019: 741
- 2020: 842
- 2021: 540
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Medicare-allowed amount
Medicare-allowed amount decreased 24% from $49,033 in 2017 to $37,402 in 2021.
- 2017: $49,033
- 2018: $50,644
- 2019: $51,753
- 2020: $61,055
- 2021: $37,402
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Paid by Medicare
Paid by Medicare decreased 32% from $38,614 in 2017 to $26,297 in 2021.
- 2017: $38,614
- 2018: $39,608
- 2019: $41,019
- 2020: $47,961
- 2021: $26,297
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 276% from 33 in 2017 to 124 in 2021.
- 2017: 33
- 2018: 34
- 2019: 27
- 2020: 97
- 2021: 124
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30-day fills
30-day fills increased 276% from 33 in 2017 to 124 in 2021.
- 2017: 33
- 2018: 34
- 2019: 27
- 2020: 97
- 2021: 124
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Part D drug cost
Part D drug cost went from $599 in 2017 to $2,750 in 2021.
- 2017: $599
- 2018: $700
- 2019: $390
- 2020: $1,503
- 2021: $2,750
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2021), 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 2016–2020 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, 2017–2021; 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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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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278 | 101 | $182.00 | $60.52 |
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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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197 | 80 | $242.00 | $79.87 |
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99356
Prolonged inpatient or observation hospital service, first hour
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43 | 42 | $205.00 | $79.96 |
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99315
Nursing facility discharge day management, 30 minutes or less
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22 | 22 | $194.00 | $63.85 |
Source: CMS Part B by Provider and Service, 2021; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Warfarin Sodium | Warfarin Sodium | 36 | 220 | $194.11 | — |
| Lorazepam | Lorazepam | 26 | 685 | $236.76 | 12 |
| Tramadol Hcl | Tramadol Hcl | 23 | 442 | $279.74 | — |
| Oxycodone Hcl | Oxycodone Hcl | 15 | 382 | $506.22 | — |
| Clonazepam | Clonazepam | 12 | 304 | $121.14 | — |
| Pregabalin | Pregabalin | 12 | 360 | $1,411.70 | — |
Source: CMS Part D by Provider and Drug, 2021; 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.
Nurse Practitioner - Acute Care
Nurse Practitioner
Surgery
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner
Urology
Career & Practice History
NPI enumerated February 22, 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 Physician Assistants in Worcester
- Yan Chen
- Katherine Palmer, PA-C
- Jacqueline Barth, PA-C
- Megan Sheppard, PA
- Darold Trinh
- Stephen Cahill, PA-C
Mailing Address
Po Box 415348
Boston, MA 022410001
Phone: 8002258885