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Dr. Stephen William Maddock , MD, PhD

General Practice โ€ข Fredericksburg, VA

Active NPI 1821060328 Individual Practitioner Male Practitioner
Practice location in NPPES

10 Marshall Pl
Fredericksburg, VA 224052937

Call 7572421774 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

10 Marshall Pl

Fredericksburg, VA 224052937

Telephone 7572421774
Fax 4172471774

Medicare-allowed amount

About $328 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.

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, 2019.

Paid by Medicare

About $328 in 2019

The part of the Medicare-allowed amount that Medicare itself paid in 2019, after patients' deductibles and coinsurance.

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, 2019.

30-day fills

276 standardized 30-day fills in 2019

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

$6,670 in 2019

The total cost of these prescriptions in 2019, paid by Medicare drug plans, patients and other payers together.

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, 2019.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $103.44 in 2022

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2022.

Guide: How to read an Open Payments record

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, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Maddock 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Maddock 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Fredericksburg and Virginia

Billing and prescribing volume is not a quality rating.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Dr. Maddock are from 2019.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Dr. Maddock are from 2019.

8 active clinicians are listed under General Practice with a practice address in Fredericksburg, VA (400 in Virginia).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2019), CMS Open Payments (2022), 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

Open Payments ยท Program Year 2022

Program year 2022 (payments made January 1 โ€“ December 31, 2022): fewer than 11 records totaling $103.44.

Manufacturer Payment Nature Product Type Amount ($)
Miach Orthopaedics, Inc.
Food and Beverage
Cash or cash equivalent
โ€” General $103.44

Source: CMS Open Payments, program year 2022, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2019.

CMS Part B ยท Data Year 2019

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 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 โ€“ by Provider and Service data, 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
80053 Blood test, comprehensive group of blood chemicals
11 11 $53.00 $11.51
84443 Blood test, thyroid stimulating hormone (tsh)
11 11 $92.00 $18.30

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 2019.

CMS Part D ยท Data Year 2019
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Gabapentin Gabapentin 21 750 $219.50 โ€”
Amlodipine Besylate Amlodipine Besylate 20 1,260 $44.13 โ€”
Atenolol Atenolol 20 755 $119.65 โ€”
Clopidogrel Clopidogrel Bisulfate 19 810 $74.25 โ€”
Atorvastatin Calcium Atorvastatin Calcium 16 460 $87.15 โ€”
Omeprazole Omeprazole 15 930 $87.92 โ€”
Lisinopril Lisinopril 12 1,080 $53.69 โ€”
Potassium Chloride Potassium Chloride 12 720 $228.02 โ€”
Furosemide Furosemide 11 630 $47.87 โ€”
Levothyroxine Sodium Levothyroxine Sodium 11 510 $178.29 โ€”
Farxiga Dapagliflozin Propanediol 11 330 $5,529.37 โ€”

Source: CMS Part D by Provider and Drug, 2019; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-11-04
General Practice Primary Specialty

NUCC Taxonomy Code: 208D00000X

License # reported to NPPES VA 0101233391

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Virginia Department of Health Professions.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - FAMILY PRACTICE

Medicare Enrollment ID

I20190212002500

Enrollment State Jurisdiction

MO

PECOS Control ID

0941238166

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
๐Ÿ“
Updated Practice Location November 04, 2025

Registered at 10 MARSHALL PL, FREDERICKSBURG, VA 224052937 (Tel: 7572421774)

๐Ÿ“
Updated Business Mailing Address November 04, 2025

Registered at 10 MARSHALL PL, FREDERICKSBURG, VA 224052937 (Tel: 7572421774)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 04, 2025

General Practice (license number reported to NPPES: VA 0101233391)

โœ…
NPI Profile Active June 06, 2008

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) June 06, 2008

Registered at 70 E WINDSOR BLVD, WINDSOR, VA 234879443 (Tel: 7572429191)

๐Ÿ“
Business Mailing Address (Initial Record) June 06, 2008

Registered at 70 E WINDSOR BLVD, WINDSOR, VA 234879443 (Tel: 7572429191)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) June 06, 2008

Recorded as STEPHEN MADDOCK, M.D., PH.D.

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) June 06, 2008

General Practice (license number reported to NPPES: VA 0101233391)

๐ŸŸข
Initial NPI Registration & Enumeration February 07, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1821060328
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 07, 2006
Last Update: November 04, 2025
Sole Proprietor: No

Other General Practices in Fredericksburg

Healthcare providers in Fredericksburg

Mailing Address

10 Marshall Pl

Fredericksburg, VA 224052937

Phone: 7572421774

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.