Dr. Robert Knowles , MD
Surgery • Roanoke, VA
101 Elm Ave Se
Roanoke, VA 240132222
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, 2005; this date does not establish years in practice.
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Published CMS data list 849 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: 435 service units.
- 99221 — Initial hospital care with straightforward or low level of medical decision making, per day: 97 service units.
- 11042 — Removal of skin and tissue, 20.0 sq cm or less: 83 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 9 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 54 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Doxycycline Hyclate — 22 prescription fills, including refills.
- Triamcinolone Acetonide — 17 prescription fills, including refills.
- Levofloxacin — 15 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Surgery in Roanoke, VA (2024, 23 clinicians with data). Median for this group: 134. Middle half: 86 to 416.
More Medicare Part B services than 90% of clinicians listed under Surgery in Virginia (2024, 430 clinicians with data). Median for this group: 235. Middle half: 111 to 391.
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 392 in 2020 to 849 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
101 Elm Ave Se
Roanoke, VA 240132222
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Peterborough, NH. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 3 distinct group names: Carilion Giles Community Hospital; Carilion Medical Center; Carilion New River Valley Medical Center. 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
1989
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
296 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 $57,687 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 $44,226 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
54 standardized 30-day fills in 2023
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
$759 in 2023
The total cost of these prescriptions in 2023, 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, 2023.
Open Payments general payments, program year 2025
All general payments: $462.28 across 31 records.
By nature of payment
- Food and Beverage: $462.28 across 31 records.
Reporting-company totals (3 largest of 12)
- Kerecis Limited: $134.03 across 15 records.
- Smith+Nephew, Inc.: $65.77 across 4 records.
- ABBVIE INC.: $37.54 across 2 records.
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
37 years (graduated 1989)
CMS Doctors and Clinicians data list 1989 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
2005
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)
Dr. Knowles 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 Dr. Knowles 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 Roanoke and Virginia
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Surgery in Roanoke, VA (2024, 23 clinicians with data). Median for this group: 134. Middle half: 86 to 416.
More Medicare Part B services than 90% of clinicians listed under Surgery in Virginia (2024, 430 clinicians with data). Median for this group: 235. Middle half: 111 to 391.
Medicare-allowed amount
A higher Medicare-allowed amount than 75% of clinicians listed under Surgery in Roanoke, VA (2024, 23 clinicians with data). Median for this group: $20,319. Middle half: $9,233 to $52,038.
A higher Medicare-allowed amount than 70% of clinicians listed under Surgery in Virginia (2024, 430 clinicians with data). Median for this group: $30,215. Middle half: $12,133 to $59,476.
Paid by Medicare
A higher Medicare payment amount than 75% of clinicians listed under Surgery in Roanoke, VA (2024, 23 clinicians with data). Median for this group: $15,217. Middle half: $6,531 to $40,531.
A higher Medicare payment amount than 70% of clinicians listed under Surgery in Virginia (2024, 430 clinicians with data). Median for this group: $23,123. Middle half: $9,101 to $46,099.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Knowles are from 2023.
44 active clinicians are listed under Surgery with a practice address in Roanoke, VA (865 in Virginia).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Roanoke
20.5% of these 44 clinicians have the CMS telehealth indicator.
65.9% of these 44 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 117% from 392 in 2020 to 849 in 2024.
- 2020: 392
- 2021: 1,172
- 2022: 1,009
- 2023: 913
- 2024: 849
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Medicare-allowed amount
Medicare-allowed amount increased 151% from $23,028 in 2020 to $57,687 in 2024.
- 2020: $23,028
- 2021: $85,950
- 2022: $71,798
- 2023: $59,336
- 2024: $57,687
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Paid by Medicare
Paid by Medicare increased 140% from $18,453 in 2020 to $44,226 in 2024.
- 2020: $18,453
- 2021: $66,168
- 2022: $53,587
- 2023: $44,146
- 2024: $44,226
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 15 in 2019 to 54 in 2023.
- 2019: 15
- 2020: 75
- 2021: 129
- 2022: 17
- 2023: 54
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30-day fills
30-day fills went from 15 in 2019 to 54 in 2023.
- 2019: 15
- 2020: 86
- 2021: 130
- 2022: 17
- 2023: 54
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Part D drug cost
Part D drug cost decreased 49% from $1,489 in 2019 to $759 in 2023.
- 2019: $1,489
- 2020: $10,554
- 2021: $7,987
- 2022: $116
- 2023: $759
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $210.27 in 2021 to $462.28 in 2025.
- 2021: $210.27
- 2022: $227.53
- 2023: $1,823.65
- 2024: $416.74
- 2025: $462.28
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2023), CMS Open Payments (2025), 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 2025 (payments made January 1 – December 31, 2025): 31 records totaling $462.28.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $35.14 |
| BSN Medical Inc |
Food and Beverage
In-kind items and services
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CUTIMED | General | $30.81 |
| Urgo Medical North America, LLC |
Food and Beverage
In-kind items and services
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URGOCLEAN AG | General | $30.63 |
| Reapplix Inc. |
Food and Beverage
In-kind items and services
|
3C Patch Kit - Box | General | $30.47 |
| Tactile Systems Technology Inc |
Food and Beverage
In-kind items and services
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Flexitouch Plus | General | $26.04 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $25.54 |
| Stimlabs LLC |
Food and Beverage
In-kind items and services
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GEISTLICH DERMA-GIDE | General | $20.41 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $19.83 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $19.81 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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TEFLARO | General | $19.45 |
| Patriot Medical Distributors |
Food and Beverage
In-kind items and services
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LYMPHA PRESS OPTIMAL PLUS(US) BT | General | $18.43 |
| Solventum Corporation |
Food and Beverage
Cash or cash equivalent
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ACTIV.A.C. | General | $18.42 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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DALVANCE | General | $18.09 |
| Paratek Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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NUZYRA | General | $17.47 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $17.05 |
| Paratek Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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NUZYRA | General | $16.58 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
|
COLLAGENASE SANTYL | General | $16.55 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $16.10 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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GRAFIX PL | General | $16.07 |
| Advanced Oxygen Therapy Inc. |
Food and Beverage
Cash or cash equivalent
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Topical Oxygen Chamber for extremities | General | $15.68 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $8.38 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $4.17 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
|
Kerecis SurgiClose | General | $3.75 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
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Kerecis SurgiClose | General | $3.70 |
| Kerecis Limited |
Food and Beverage
Cash or cash equivalent
|
Kerecis SurgiClose | General | $3.69 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, 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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435 | 147 | $150.70 | $62.93 |
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99221
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes
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97 | 90 | $237.13 | $78.59 |
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11042
Removal of skin and tissue, 20.0 sq cm or less
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83 | 68 | $321.00 | $57.29 |
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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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75 | 75 | $202.19 | $76.92 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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49 | 34 | $96.43 | $47.07 |
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15271
Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less
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47 | 31 | $198.51 | $79.64 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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38 | 32 | $300.00 | $124.81 |
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17250
Application of chemical to stop tissue regrowth in wound
|
13 | 12 | $122.85 | $36.06 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
|
12 | 11 | $160.00 | $75.35 |
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 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Doxycycline Hyclate | Doxycycline Hyclate | 22 | 230 | $461.83 | 19 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 17 | 395 | $101.04 | — |
| Levofloxacin | Levofloxacin | 15 | 150 | $195.90 | 14 |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-08-23NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 163WW0000X
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20100202000546
VA
1557370517
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
Carilion Medical Center
101 Elm Ave, Roanoke, VA 240132222
Phone: 5402244380
Carilion Giles Community Hospital
159 Hartley Way, Pearisburg, VA 241342471
Phone: 5409216000
Carilion New River Valley Medical Center
2900 Lamb Cir, Christiansburg, VA 240736344
Phone: 5407312992
Secondary Practice Locations
454 Old Street Rd, Suite 201
Peterborough, NH 034581200
Phone: 6039244668
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Clinical Nurse Specialist
Doctor of Nursing Practice, Registered Nurse, Clinical Nurse Specialist
Physician Assistant
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 101 ELM AVE SE, ROANOKE, VA 240132222 (Tel: 5402244325)
Registered at 213 S JEFFERSON ST STE 1006, ROANOKE, VA 240111713 (Tel: 5402245715)
Registered Nurse (license number reported to NPPES: VA 0101058403)
NPI status registered as active in NPPES database
Registered at 454 OLD STREET RD, SUITE 201, PETERBOROUGH, NH 034581200 (Tel: 6039244668)
Registered at 454 OLD STREET RD, SUITE 201, PETERBOROUGH, NH 034581200 (Tel: 6039244668)
Recorded as ROBERT KNOWLES, M.D.
Surgery (license number reported to NPPES: NH 15835)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Roanoke
- Dr. Kristin Mccoy, MD
- Lesley Quesenberry, PA-C
- Dr. William Epstein, MD
- Dr. James Drougas, MD
- Dr. Sharon Williams, MD
- Dr. Curtis Bower, MD
More public profiles in Virginia
Directory navigation, in NPI number order.
- Patricia Cook, MD Internal Medicine · Richmond
- Navin Singh, MD Plastic Surgery · Mc Lean
- Hasan Yousuf, MD Internal Medicine · Mechanicsville
- Siamak Heydarian, MD Internal Medicine · Woodbridge
- Deborah Panebianco, MD Internal Medicine · Richmond
- Chalak Berzingi, MD Internal Medicine - Interventional Cardiology · Roanoke
- Robert Dixon, PT Physical Therapist · Louisa
- Azita Moalemi, MD Internal Medicine - Cardiovascular Disease · Springfield
- Sean Huiras, PA-C Physician Assistant - Surgical · Richmond
- Michele Trippel, MD Internal Medicine · Lansdowne
- Garnett Stover, DC Chiropractor · Mechanicsville
- Anne Mackin, PT Physical Therapist · Winchester
Mailing Address
213 S Jefferson St Ste 1006
Roanoke, VA 240111713
Phone: 5402245715