Christopher Mullany McMackin, MD
Internal Medicine Physician · Washington, DC
Christopher Mullany McMackin, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1255345096, issued on Jul 28, 2006. Check the license (District of Columbia 16615, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Christopher Mullany McMackin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 16615 DC
Self-reported in NPPES; status is on the state search - Practice location
- 2311 M St NW, Washington, DC 20037
- Phone
- (202) 296-0043
- Enumerated
- Jul 28, 2006
- Record last updated
- Oct 22, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (202) 296-1306
- Medicaid ID
- 025969800 DC
- Medicare enrollment
- Enrolled (PECOS I20120723000428); accepts Medicare assignment
- Medical or professional school
- Medical College Of Pennsylvania, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 2311 M St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christopher Mullany McMackin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license 16615Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average internal medicine physician in 2024
4,870 Medicare Part D claims for 345 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 165 claims were for opioids.
Most prescribed
- Atorvastatin Calcium393 claims
- Lisinopril207 claims
- Amlodipine Besylate125 claims
- Zolpidem Tartrate118 claims
- Biktarvy109 claims
- Tamsulosin Hcl99 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $3,990.46
184 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Privia Medical Group, LLCLanham, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Mullany McMackin among 901 internal medicine physician records in District of Columbia
Christopher Mullany McMackin, MD is one of 901 internal medicine physician records with a practice address in District of Columbia. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 67% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1984 · median 2008 among the 513 with a school on file
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
891 internal medicine physician records list a practice address in Washington
They are 891 of the 45,857 NPPES records with a practice address in Washington, and 901 internal medicine physician records in District of Columbia.
All 901 in District of Columbia → Every provider in Washington → Internal Medicine Physician nationwide →
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Common questions
What is Christopher Mullany McMackin, MD's NPI number?
Christopher Mullany McMackin, MD's National Provider Identifier (NPI) is 1255345096, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Mullany McMackin, MD located?
The NPPES record lists a practice address at 2311 M St NW, Washington, DC, 20037. Phone: (202) 296-0043. Providers update this record themselves, so call before visiting.
How can I verify Christopher Mullany McMackin, MD's license?
NPPES lists District of Columbia license number 16615, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Mullany McMackin, MD prescribe under Medicare Part D?
In 2024, Christopher Mullany McMackin, MD had 4,870 Medicare Part D claims for 345 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.