Emma Giacinta Diiorio, M.D.
Rheumatology Physician · Rockville, MD
Emma Giacinta Diiorio, M.D. is a rheumatology physician with a practice address in Rockville, Maryland, and NPI 1528067808, issued on Jul 19, 2005. Check the license (Maryland D0044503, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Emma Giacinta Diiorio
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- D0044503 MD
Self-reported in NPPES; status is on the state search - Practice location
- 14995 Shady Grove RD, Rockville, MD 20850
- Phone
- (301) 942-7600
- Enumerated
- Jul 19, 2005
- Record last updated
- Jul 15, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (301) 942-3132
- Medicaid ID
- 057951300 MD
- Medicare enrollment
- Enrolled (PECOS I20100616000305); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 214 in Maryland → Look up another NPI →
Also registered at 14995 Shady Grove RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joshua Eppinger, OTR/LOccupational Therapist1659890978
- Blake Leibowitz, PA-CPhysician Assistant1578012118
- Myria Petrou, MBCHBDiagnostic Radiology Physician1245351733
Verify Emma Giacinta Diiorio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0044503Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,453 Medicare Part D claims for 297 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Alendronate Sodium234 claims
- Methotrexate167 claims
- Hydroxychloroquine Sulfate132 claims
- Prednisone125 claims
- Allopurinol88 claims
- Duloxetine Hcl63 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): 77.1 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).
Industry payments in 2024: $62.67
4 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 4,486 providers of this specialty with any payment received $8,538.33 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 2 group practices
- Arthritis And Rheumatism Associates PCRockville, MD
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emma Giacinta Diiorio among 214 rheumatology physician records in Maryland
Emma Giacinta Diiorio, M.D. is one of 214 rheumatology physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1987 · median 2001 among the 132 with a school on file
- Record last updated2019 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Maryland
There are 214 rheumatology physician records in Maryland.
All 214 in Maryland → Every provider in Rockville → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Grace Ahn, M.D.Rockville, MD 208501982884896
- Ashley Beall, MDRockville, MD 208501164443511
- Rami Eltaraboulsi, M.D.Rockville, MD 208501427477363
- Seema Goyal, M.D.Rockville, MD 208501609043082
- Nitasha Kumar, M.D.Rockville, MD 208501093135113
- Jeffery Potter, M.D.Rockville, MD 208501295994481
- Guada Respicio Duque, M.D.Rockville, MD 208501659560266
- Evan Siegel, M.D.Rockville, MD 208501578562617
Common questions
What is Emma Giacinta Diiorio, M.D.'s NPI number?
Emma Giacinta Diiorio, M.D.'s National Provider Identifier (NPI) is 1528067808, issued on Jul 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Emma Giacinta Diiorio, M.D. located?
The NPPES record lists a practice address at 14995 Shady Grove RD, Rockville, MD, 20850. Phone: (301) 942-7600. Providers update this record themselves, so call before visiting.
How can I verify Emma Giacinta Diiorio, M.D.'s license?
NPPES lists Maryland license number D0044503, as entered by the provider. 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 Emma Giacinta Diiorio, M.D. prescribe under Medicare Part D?
In 2024, Emma Giacinta Diiorio, M.D. had 1,453 Medicare Part D claims for 297 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Emma Giacinta Diiorio, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.1 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.