Joanna T. Regis, MD
Family Medicine Physician · Largo, MD
Joanna T. Regis, MD is a family medicine physician with a practice address in Largo, Maryland, and NPI 1073773321, issued on Jun 11, 2008. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Joanna T. Regis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 116020108 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Mercantile LN, Largo, MD 20774
- Phone
- (301) 618-5500
- Enumerated
- Jun 11, 2008
- Record last updated
- Jun 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (301) 618-5525
- Medicare enrollment
- Enrolled (PECOS I20111003000418); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 1221 Mercantile LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Abbott, RN,BSN,CM-CCase Management Registered Nurse1366743122
- Grace AdumanisaResearch Study Specialist1104663145
- Cielito Aguinaldo, MDInternal Medicine Physician1063585347
- Elma Alston, LCSW-CClinical Social Worker1629300488
- Bridget AnyiwoPharmacist1326228529
- Brian Armstrong, MDOphthalmology Physician1285781179
Verify Joanna T. Regis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of PhysiciansCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% more Medicare Part D claims than the average family medicine physician in 2024
4,894 Medicare Part D claims for 429 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 91 claims were for opioids.
Most prescribed
- Atorvastatin Calcium595 claims
- Amlodipine Besylate438 claims
- Losartan Potassium262 claims
- Gabapentin167 claims
- Lisinopril165 claims
- Metformin Hcl133 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.
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).
Joanna T. Regis among 1,912 family medicine physician records in Maryland
Joanna T. Regis, MD is one of 1,912 family medicine physician records with a practice address in Maryland. 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 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 38% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2006 · median 2004 among the 1,141 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Largo
They are 8 of the 651 NPPES records with a practice address in Largo, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Largo → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Isabella Ahanogbe, M.D.Upper Marlboro, MD 207741821381849
- Olufemi Balogun, MDUpper Marlboro, MD 207741194010678
- Jericho De Mata, D.O.Upper Marlboro, MD 207741275950396
- Seth Flagg, MDUpper Marlboro, MD 207741548305451
- Surendra Kumar, M.D.Largo, MD 207741073616652
- Papia Nasiri, M.D.Upper Marlboro, MD 207741912263534
- Uchemadu Nwaononiwu, M.DUpper Marlboro, MD 207741770710451
- Nwamaka Oluwato, M.D.Upper Marlboro, MD 207741649513904
Common questions
What is Joanna T. Regis, MD's NPI number?
Joanna T. Regis, MD's National Provider Identifier (NPI) is 1073773321, issued on Jun 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joanna T. Regis, MD located?
The NPPES record lists a practice address at 1221 Mercantile LN, Largo, MD, 20774. Phone: (301) 618-5500. Providers update this record themselves, so call before visiting.
How can I verify Joanna T. Regis, MD's license?
Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joanna T. Regis, MD prescribe under Medicare Part D?
In 2024, Joanna T. Regis, MD had 4,894 Medicare Part D claims for 429 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.