Dr. Derek Brian Wall , MD
Surgery โข Dover, NH
789 Central Ave
Dover, NH 038202526
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 January 25, 2006; this date does not establish years in practice.
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Published CMS data list 142 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:
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 52 service units.
- 99222 โ Initial hospital care with straightforward or low-level medical decision making: 33 service units.
- 99231 โ Subsequent hospital care with straightforward or low level of medical decision making, per day: 30 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 all 5 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 48 Medicare Part D prescriptions, including refills, in 2016.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2016. Published rows only; this is not a quality measure.
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Published Part D records, 2016:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) โ 14 prescription fills, including refills.
- Phenytoin Sodium Extended โ 12 prescription fills, including refills.
- Pravastatin Sodium โ 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2016. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 70% of clinicians listed under Surgery in Dover, NH (2024, 12 clinicians with data). Median for this group: 178. Middle half: 139 to 214.
Close to the middle for Medicare Part B services among clinicians listed under Surgery in New Hampshire (2024, 109 clinicians with data). Median for this group: 163. Middle half: 82 to 271.
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 215 in 2020 to 142 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
789 Central Ave
Dover, NH 038202526
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 Janesville, WI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Wentworth Douglass Physician Corporation. 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
1996
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
135 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 $12,327 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 $9,821 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
48 standardized 30-day fills in 2016
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
$916 in 2016
The total cost of these prescriptions in 2016, 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, 2016.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 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
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.
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
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. Wall 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. Wall 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 Dover and New Hampshire
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Surgery in Dover, NH (2024, 12 clinicians with data). Median for this group: 178. Middle half: 139 to 214.
Close to the middle for clinicians listed under Surgery in New Hampshire (2024, 109 clinicians with data). Median for this group: 163. Middle half: 82 to 271.
Medicare-allowed amount
A lower Medicare-allowed amount than 80% of clinicians listed under Surgery in Dover, NH (2024, 12 clinicians with data). Median for this group: $20,770. Middle half: $16,526 to $28,210.
A lower Medicare-allowed amount than 65% of clinicians listed under Surgery in New Hampshire (2024, 109 clinicians with data). Median for this group: $20,015. Middle half: $8,395 to $38,421.
Paid by Medicare
A lower Medicare payment amount than 80% of clinicians listed under Surgery in Dover, NH (2024, 12 clinicians with data). Median for this group: $16,129. Middle half: $13,069 to $20,696.
A lower Medicare payment amount than 60% of clinicians listed under Surgery in New Hampshire (2024, 109 clinicians with data). Median for this group: $15,119. Middle half: $6,000 to $29,681.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Wall are from 2016.
15 active clinicians are listed under Surgery with a practice address in Dover, NH (196 in New Hampshire).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Dover
13.3% of these 15 clinicians have the CMS telehealth indicator.
93.3% of these 15 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 34% from 215 in 2020 to 142 in 2024.
- 2020: 215
- 2021: 175
- 2022: 47
- 2023: 40
- 2024: 142
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $12,707 in 2020 and $12,327 in 2024.
- 2020: $12,707
- 2021: $11,080
- 2022: $2,826
- 2023: $2,989
- 2024: $12,327
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Paid by Medicare
Paid by Medicare varied from year to year: $9,855 in 2020 and $9,821 in 2024.
- 2020: $9,855
- 2021: $8,835
- 2022: $2,232
- 2023: $2,392
- 2024: $9,821
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 118% from 22 in 2014 to 48 in 2016.
- 2014: 22
- 2015: 26
- 2016: 48
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30-day fills
30-day fills increased 118% from 22 in 2014 to 48 in 2016.
- 2014: 22
- 2015: 26
- 2016: 48
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Part D drug cost
Part D drug cost went from $355 in 2014 to $916 in 2016.
- 2014: $355
- 2015: $458
- 2016: $916
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2016), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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52 | 35 | $303.37 | $73.08 |
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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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33 | 33 | $502.52 | $121.05 |
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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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30 | 21 | $114.33 | $45.71 |
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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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14 | 14 | $299.00 | $76.66 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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13 | 13 | $608.54 | $160.58 |
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 2016.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 14 | 108 | $173.37 | 12 |
| Phenytoin Sodium Extended | Phenytoin Sodium Extended | 12 | 360 | $319.76 | โ |
| Pravastatin Sodium | Pravastatin Sodium | 11 | 330 | $299.09 | โ |
| Labetalol Hcl | Labetalol Hcl | 11 | 330 | $123.40 | โ |
Source: CMS Part D by Provider and Drug, 2016; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-21NUCC 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: 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: 2086S0127X
Trauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20240117004309
NH
1951404326
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
Wentworth Douglass Physician Corporation
789 Central Ave, Dover, NH 038202526
Phone: 6036096260
Secondary Practice Locations
1000 Mineral Point Ave
Janesville, WI 535482940
Phone: 6087566000
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.)
Surgery
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Practice Registered Nurse
Surgery
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 789 CENTRAL AVE, DOVER, NH 038202526 (Tel: 6037492266)
Registered at PO BOX 412503, BOSTON, MA 022412503
Registered at 1000 MINERAL POINT AVE, JANESVILLE, WI 535482940 (Tel: 6087566000)
Registered at 1000 MINERAL POINT AVE, JANESVILLE, WI 535482940 (Tel: 6087566000)
NPI status registered as active in NPPES database
Registered at 611 W PARK ST, URBANA, IL 618012500 (Tel: 2173833240)
Registered at 611 W PARK ST, BWPC, URBANA, IL 618012500 (Tel: 2173836792)
Recorded as DEREK WALL, MD
Surgery (license number reported to NPPES: CA A64368)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Dover
- Dr. Mary Fudge, MD
- Dr. David Coppola, MD
- Dr. Arthur Kim, MD
- Dr. Jessica Schnur, MD
- Dr. Nadeem Haddad, MD
- Dr. Peter Carter, MD
Mailing Address
Po Box 412503
Boston, MA 022412503