Matty Mathivannan, MD
Internal Medicine Physician · Washington, DC
Matty Mathivannan, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1679644736, issued on Nov 12, 2006. Check the license (District of Columbia MD31203, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Matty Mathivannan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD31203 DC
Self-reported in NPPES; status is on the state search - Practice location
- 2141 K St NW, Washington, DC 20037
- Phone
- (202) 293-8680
- Enumerated
- Nov 12, 2006
- Record last updated
- Oct 13, 2022
- Fax
- (202) 293-8694
- Medicaid ID
- 037070700 DC
- Medicare enrollment
- Enrolled (PECOS I20051130000693); accepts Medicare assignment
- 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 2141 K St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ramin Abrahim, M.D.Specialist1689623209
- Elliot Aleskow, MDInternal Medicine Physician1154334340
- Linda Assatourians, M.D.Internal Medicine Physician1891881306
- Philip Assatourians, M.D.Gastroenterology Physician1104912617
- Gwen Barch, ANPAdult Health Nurse Practitioner1942320734
- Anthony Barone, M.D.Specialist1780632166
Verify Matty Mathivannan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD31203Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,222 Medicare Part D claims for 397 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Atorvastatin Calcium262 claims
- Amlodipine Besylate162 claims
- Losartan Potassium91 claims
- Lisinopril87 claims
- Metformin Hcl82 claims
- Albuterol Sulfate Hfa79 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The Mid Atlantic States, IncLargo, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matty Mathivannan among 901 internal medicine physician records in District of Columbia
Matty Mathivannan, 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
- Graduated1994 · median 2008 among the 513 with a school on file
- Record last updated2022 · 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 Matty Mathivannan, MD's NPI number?
Matty Mathivannan, MD's National Provider Identifier (NPI) is 1679644736, issued on Nov 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matty Mathivannan, MD located?
The NPPES record lists a practice address at 2141 K St NW, Washington, DC, 20037. Phone: (202) 293-8680. Providers update this record themselves, so call before visiting.
How can I verify Matty Mathivannan, MD's license?
NPPES lists District of Columbia license number MD31203, 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 Matty Mathivannan, MD prescribe under Medicare Part D?
In 2024, Matty Mathivannan, MD had 2,222 Medicare Part D claims for 397 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Matty Mathivannan, MD's MIPS final score?
The 2023 MIPS final score is 87.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.