Dr. Matthew Allen Parker, MD
- Part D claims, 2024
- 2,155
- Industry payments
- $46
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 3301 New Mexico NW Ave, Washington, DC 20016
- Practice phone
- Call (202) 362-4467
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Foxhall Internists
Washington, District of Columbia
Find Dr. Parker'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. Matthew Allen Parker is an internist in Washington, District of Columbia
Dr. Parker practices at Foxhall Internists in Washington, District of Columbia.
Dr. Parker's NPI, 1629171269, was assigned on September 7, 2006. Dr. Parker holds District of Columbia license MD9742.
- NPI
- 1629171269NPI Registry (opens in a new tab)
- NPI enumeration date
- September 7, 2006
- NPI status
- Active
- Practice phone
- (202) 362-4467
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Matthew Allen Parker practices at Foxhall Internists in Washington, District of Columbia
Dr. Parker's primary practice is Foxhall Internists, at 3301 New Mexico NW Ave, Washington, DC 20016 in District Of Columbia County. The practice phone is (202) 362-4467.
- Foxhall Internists3301 New Mexico NW Ave, Washington, DC 20016 · District Of Columbia CountyPhone(202) 362-4467
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Matthew Allen Parker is affiliated with 2 sites of care and 2 medical groups
Dr. Parker's primary practice is Foxhall Internists in Washington, District of Columbia. The medical group on file is Foxhall Internists. Dmand AI also links Dr. Parker to 1 more group practice or clinic and 1 medical group, 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. Matthew Allen Parker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Parker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Foxhall Internists | Available with a free account |
| +1 more site and 1 medical group | 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. Matthew Allen Parker is one of 660 internists in District of Columbia
Internal medicine is Dr. Parker's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Parker is licensed in District of Columbia.
Specialties and state licenses
- Internal medicine, District of ColumbiaPrimary
Internists near Dr. Parker
Counts of internists 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. Matthew Allen Parker's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Parker's median patient age at 70, with 33% women.
Dr. Parker'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
- Women33%
- Men66%
Source: Dmand AI Patient Panel Data
Dr. Matthew Allen Parker wrote 2,155 Medicare Part D claims in 2024
In 2024, Dr. Parker wrote 2,155 Medicare Part D claims for 181 patients. 92% of them were for generic drugs. CMS names the drug for 1,761 of them, across 42 drugs with 11 or more claims each, at $147,528 in total drug cost. In 2023, CMS named 1,152 claims across 31 drugs.
Dr. Parker's Part D claims by kind of drug, 2024
- Generic1,991 claims92%
- Brand-name and other164 claims8%
Dr. Parker's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Parker's Part D claims, 2024
- Opioids1%13 of 2,155 claims
- Antibiotics4%83 of 2,155 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1522024: 1,76153%
Drugs named by CMS: 42 in 2024, 31 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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. Matthew Allen Parker received $46 in industry payments from 2017 to 2021
CMS Open Payments shows 3 general payments to Dr. Parker from 2 drug and device companies from 2017 to 2021. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $28.
General payments to Dr. Parker by program year, 2017 to 2021
Companies that paid Dr. Parker the most, 2017 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Matthew Allen Parker'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Matthew Allen Parker
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. Matthew Allen Parker's NPI number?
Dr. Matthew Allen Parker's NPI number is 1629171269. It was assigned on September 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew Allen Parker?
Dr. Matthew Allen Parker is an internist in Washington, District of Columbia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Matthew Allen Parker practice?
Dr. Parker practices at 3301 New Mexico NW Ave, Washington, DC 20016. Dr. Parker's primary practice is Foxhall Internists in Washington, District of Columbia. Dmand AI also links Dr. Parker to 1 group practice or clinic and 1 medical group.
What is Dr. Matthew Allen Parker's office phone number?
The practice phone on file for Dr. Parker is (202) 362-4467.
What is Dr. Matthew Allen Parker's medical license number?
Dr. Parker holds District of Columbia license MD9742.
What medical group is Dr. Matthew Allen Parker part of?
Dr. Parker is linked to Foxhall Internists. Dmand AI links Dr. Parker to 1 more medical group.
What drugs does Dr. Matthew Allen Parker prescribe most?
In 2024 Medicare Part D data, Dr. Parker's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Matthew Allen Parker received payments from drug or device companies?
CMS Open Payments shows $46 in general payments to Dr. Parker from 2 companies from 2017 to 2021. The largest total came from Pfizer Inc.
How long has Dr. Matthew Allen Parker been practicing?
Dr. Parker's NPI was assigned in 2006.
Selling to internal medicine practices?
See internists in District of Columbia 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