Lien Thuy Do
Physician Assistant โข Worcester, MA
55 Lake Ave N
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 July 8, 2016; this date does not establish years in practice.
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Published CMS data list 287 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 194 service units.
- 99215 โ Established patient outpatient office visit: 59 service units.
- 99213 โ Established patient outpatient office visit: 34 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 1,163 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Omeprazole โ 230 prescription fills, including refills.
- Pantoprazole Sodium โ 147 prescription fills, including refills.
- Linzess (Linaclotide) โ 87 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 29 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 65% of clinicians listed under Physician Assistant in Worcester, MA (2024, 226 clinicians with data). Median for this group: 174. Middle half: 98 to 364.
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 โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 168 in 2020 to 287 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
55 Lake Ave N
Worcester, MA 016550002
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: Umass Memorial Medical Group Inc. 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
2016
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
226 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 โ by Provider, 2024.
Medicare-allowed amount
About $24,612 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 โ by Provider and Service, 2024.
Paid by Medicare
About $18,200 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 โ by Provider and Service, 2024.
30-day fills
1,817 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
$375,932 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $282.70 across 5 records.
By nature of payment
- Food and Beverage: $282.70 across 5 records.
Reporting-company totals
- Madrigal Pharmaceuticals: $186.30 across 1 record.
- Alnylam Pharmaceuticals Inc.: $65.96 across 3 records.
- Eli Lilly and Company: $30.44 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 2025 (published June 30, 2026).
Years since graduation
10 years (graduated 2016)
CMS Doctors and Clinicians data list 2016 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
2016
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, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Lien Do 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 Lien Do 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 Worcester and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 65% of clinicians listed under Physician Assistant in Worcester, MA (2024, 226 clinicians with data). Median for this group: 174. Middle half: 98 to 364.
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 65% of clinicians listed under Physician Assistant in Worcester, MA (2024, 226 clinicians with data). Median for this group: $15,866. Middle half: $8,187 to $28,338.
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 65% of clinicians listed under Physician Assistant in Worcester, MA (2024, 226 clinicians with data). Median for this group: $11,961. Middle half: $6,077 to $21,469.
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
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Worcester, MA (2024, 188 clinicians with data). Median for this group: 144. Middle half: 48 to 542.
More Part D prescriptions than 85% of 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
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Worcester, MA (2024, 188 clinicians with data). Median for this group: $2,295. Middle half: $439 to $27,727.
A higher Part D drug cost than 90% 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.
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 increased 71% from 168 in 2020 to 287 in 2024.
- 2020: 168
- 2021: 149
- 2022: 271
- 2023: 291
- 2024: 287
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Medicare-allowed amount
Medicare-allowed amount increased 120% from $11,175 in 2020 to $24,612 in 2024.
- 2020: $11,175
- 2021: $12,245
- 2022: $23,777
- 2023: $25,675
- 2024: $24,612
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Paid by Medicare
Paid by Medicare increased 120% from $8,269 in 2020 to $18,200 in 2024.
- 2020: $8,269
- 2021: $8,985
- 2022: $17,201
- 2023: $19,165
- 2024: $18,200
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 227% from 356 in 2020 to 1,163 in 2024.
- 2020: 356
- 2021: 403
- 2022: 586
- 2023: 1,088
- 2024: 1,163
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30-day fills
30-day fills increased 249% from 521 in 2020 to 1,817 in 2024.
- 2020: 521
- 2021: 684
- 2022: 1,047
- 2023: 1,824
- 2024: 1,817
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Part D drug cost
Part D drug cost increased 455% from $67,711 in 2020 to $375,932 in 2024.
- 2020: $67,711
- 2021: $121,799
- 2022: $133,439
- 2023: $399,940
- 2024: $375,932
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $109.53 in 2024 to $282.70 in 2025.
- 2024: $109.53
- 2025: $282.70
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $282.70.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Madrigal Pharmaceuticals |
Food and Beverage
In-kind items and services
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REZDIFFRA | General | $186.30 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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OMVOH | General | $30.44 |
| Alnylam Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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ONPATTRO | General | $25.83 |
| Alnylam Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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ONPATTRO | General | $20.27 |
| Alnylam Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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ONPATTRO | General | $19.86 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018โ2023 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 โ by Provider and Service data, 2019โ2024; 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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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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194 | 163 | $445.00 | $80.74 |
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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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59 | 55 | $616.73 | $119.68 |
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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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34 | 32 | $300.00 | $55.51 |
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 |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 230 | 12,716 | $3,442.39 | 78 |
| Pantoprazole Sodium | Pantoprazole Sodium | 147 | 8,850 | $2,274.67 | 49 |
| Linzess | Linaclotide | 87 | 2,762 | $49,118.60 | 21 |
| Creon | Lipase/Protease/Amylase | 71 | 2,482 | $163,159.61 | 23 |
| Famotidine | Famotidine | 62 | 3,360 | $655.19 | 18 |
| Dicyclomine Hcl | Dicyclomine Hcl | 48 | 1,970 | $747.43 | 17 |
| Zenpep | Lipase/Protease/Amylase | 46 | 1,477 | $106,901.74 | 11 |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 44 | 1,683 | $2,409.36 | โ |
| Metoclopramide Hcl | Metoclopramide Hcl | 33 | 1,005 | $102.48 | โ |
| Nortriptyline Hcl | Nortriptyline Hcl | 30 | 1,140 | $285.79 | โ |
| Motegrity | Prucalopride Succinate | 30 | 900 | $15,555.51 | โ |
| Lubiprostone | Lubiprostone | 30 | 1,128 | $2,852.82 | โ |
| Colestipol Hcl | Colestipol Hcl | 29 | 1,290 | $3,157.58 | 12 |
| Gavilyte-G | Peg3350/Sod Sulf,bicarb,cl/Kcl | 28 | 31 | $443.97 | 28 |
| Gavilyte-C | Peg3350/Sod Sulf,bicarb,cl/Kcl | 27 | 29 | $503.55 | 27 |
| Dexlansoprazole Dr | Dexlansoprazole | 24 | 1,740 | $11,133.33 | โ |
| Spironolactone | Spironolactone | 21 | 1,575 | $519.12 | โ |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 20 | 628 | $420.37 | โ |
| Sod Sulf-Potass Sulf-Mag Sulf | Sodium, Potassium,mag Sulfates | 19 | 21 | $1,244.85 | 19 |
| Ursodiol | Ursodiol | 17 | 1,140 | $3,093.18 | โ |
| Carvedilol | Carvedilol | 16 | 540 | $115.09 | โ |
| Lansoprazole | Lansoprazole | 16 | 960 | $597.75 | โ |
| Naltrexone Hcl | Naltrexone Hcl | 14 | 526 | $771.44 | โ |
| Rabeprazole Sodium | Rabeprazole Sodium | 14 | 660 | $333.09 | โ |
| Amitriptyline Hcl | Amitriptyline Hcl | 13 | 990 | $220.80 | โ |
(top 25 shown)
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
Self-certified to NPPES: 2021-04-21NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20190215000073
MA
8022372630
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
Umass Memorial Medical Group Inc
55 Lake Ave N, Worcester, MA 016550002
Phone: 5083341000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner
Nurse Practitioner
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 55 LAKE AVE N, WORCESTER, MA 016550002 (Tel: 5088562846)
Registered at PO BOX 415348, BOSTON, MA 022415348 (Tel: 8002258885)
Physician Assistant (license number reported to NPPES: MA PA5880)
Registered at 385 SOUTHBRIDGE ST, AUBURN, MA 015012498 (Tel: 5084255446)
Registered at 5 NEPONSET ST, WOT 2ND FL, STE C203, WORCESTER, MA 016062714 (Tel: 5084255446)
Physician Assistant (license number reported to NPPES: MA PA5880)
NPI status registered as active in NPPES database
Registered at 215 WEST ST, MILFORD, MA 017572277 (Tel: 5084786363)
Registered at 20 SPAULDING ST, QUINCY, MA 021698132 (Tel: 7819852520)
Recorded as LIEN DO
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Worcester
- Zachary Wright, PA-C
- Alice Fannin, PA
- Sophia Fernandes, PA-C
- Eric Frimpong
- Heather Keefe, PA-C
- Ashley Ducharme
Mailing Address
Po Box 415348
Boston, MA 022415348
Phone: 8002258885