Dr. John Specht Maddox, MD
- Medicare services, 2021
- 62
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Industry payments
- $884
- Medical groups
- 4
- Practice address
- 8901 Rockville Pike, Bethesda, MD 20889
- Practice phone
- Call (301) 295-4934
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Walter Reed National Military Medical Center
Bethesda, Maryland
Find Dr. Maddox's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Specht Maddox is a trauma surgery physician in Bethesda, Maryland
Dr. Maddox practices at Walter Reed National Military Medical Center in Bethesda, Maryland.
Dr. Maddox's NPI, 1528122256, was assigned on December 20, 2006. Dr. Maddox graduated from Uniformed Services UHS Fe Hebert School of Med in 2006. Dr. Maddox holds Maryland license D0089752.
- NPI
- 1528122256NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759529944
- NPI enumeration date
- December 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 295-4934
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Specht Maddox practices at Walter Reed National Military Medical Center in Bethesda, Maryland
Dr. Maddox's primary practice is Walter Reed National Military Medical Center, at 8901 Rockville Pike, Bethesda, MD 20889 in Montgomery County. The practice phone is (301) 295-4934.
- Walter Reed National Military Medical Center8901 Rockville Pike, Bethesda, MD 20889 · Montgomery CountyPhone(301) 295-4934
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Specht Maddox is affiliated with 5 sites of care and 4 medical groups
Dr. Maddox's primary practice is Walter Reed National Military Medical Center in Bethesda, Maryland. Dr. Maddox is also affiliated with Meritus Medical Center. The medical group on file is R Adams Cowley Shock Trauma Center at the University of Maryland. Dmand AI also links Dr. Maddox to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Specht Maddox's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maddox practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walter Reed National Military Medical Center | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Specht Maddox is one of 30 trauma surgery physicians in Maryland
Trauma surgery is Dr. Maddox's primary specialty in the NPI Registry, under taxonomy code 2086S0127X. Dr. Maddox is licensed in Maryland.
Specialties and state licenses
- Trauma surgery, MarylandPrimary
Trauma surgery physicians near Dr. Maddox
Counts of trauma surgery physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Specht Maddox billed Medicare for 62 services in 2021
CMS data shows 62 Medicare services from Dr. Maddox across 2 procedure codes in 2021. Medicare paid $4,252 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Maddox's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 662021: 626%
Dr. Maddox compared with the Maryland median for trauma surgery physicians, 2021
- Dr. Maddox
- Maryland median
- Medicare services
- 62vs 16262% below
Medians across 28 trauma surgery physicians in Maryland with Dmand AI profiles that report each measure.
Dr. Maddox's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Maddox?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maddox and other trauma surgery physicians in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Specht Maddox's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Maddox's median patient age at 70, with 22% women.
Dr. Maddox's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women22%
- Men78%
Source: Dmand AI Patient Panel Data
Dr. John Specht Maddox scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Maddox for performance year 2024, reported as part of a group. Dr. Maddox accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Maddox's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John Specht Maddox received $884 in industry payments in 2022
CMS Open Payments shows 1 general payment to Dr. Maddox from 1 drug or device company in 2022. Travel and lodging make up the largest share, 100% of the total. Nuvasive, Inc. paid the most, $884.
Companies that paid Dr. Maddox the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Specht Maddox graduated from Uniformed Services UHS Fe Hebert School of Med
Dr. Maddox graduated from Uniformed Services UHS Fe Hebert School of Med in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Specht Maddox's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Specht Maddox
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Specht Maddox's NPI number?
Dr. John Specht Maddox's NPI number is 1528122256. It was assigned on December 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Specht Maddox?
Dr. John Specht Maddox is a trauma surgery physician in Bethesda, Maryland. The primary specialty in the NPI Registry is Trauma Surgery Physician (taxonomy code 2086S0127X).
Where does Dr. John Specht Maddox practice?
Dr. Maddox practices at 8901 Rockville Pike, Bethesda, MD 20889. Dr. Maddox's primary practice is Walter Reed National Military Medical Center in Bethesda, Maryland. Dmand AI also links Dr. Maddox to 3 group practices and clinics and 3 medical groups.
What is Dr. John Specht Maddox's office phone number?
The practice phone on file for Dr. Maddox is (301) 295-4934.
What is Dr. John Specht Maddox's medical license number?
Dr. Maddox holds Maryland license D0089752.
Which hospitals is Dr. John Specht Maddox affiliated with?
Dr. Maddox is affiliated with Meritus Medical Center.
What medical group is Dr. John Specht Maddox part of?
Dr. Maddox is linked to R Adams Cowley Shock Trauma Center at the University of Maryland. Dmand AI links Dr. Maddox to 3 more medical groups.
Does Dr. John Specht Maddox accept Medicare?
Yes. CMS data shows Dr. Maddox billed Medicare for 62 services in 2021, and Dr. Maddox accepts Medicare assignment.
What is Dr. John Specht Maddox's MIPS score?
Dr. Maddox's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
What services does Dr. John Specht Maddox bill to Medicare?
In 2021, Dr. Maddox's most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99221).
Show 3 more questionsShow fewer questions
Where did Dr. John Specht Maddox go to medical school?
Dr. Maddox graduated from Uniformed Services UHS Fe Hebert School of Med in 2006.
Has Dr. John Specht Maddox received payments from drug or device companies?
CMS Open Payments shows $884 in general payments to Dr. Maddox from 1 company from 2022 to 2022. The largest total came from Nuvasive, Inc.
How long has Dr. John Specht Maddox been practicing?
Dr. Maddox graduated from medical school in 2006, 20 years ago.
Selling to trauma surgery practices?
See trauma surgery physicians in Maryland by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card