Registry data as of Aug 27, 2026

Ryan Arnold, MD

Infectious Disease Physician · Annapolis, MD

Ryan Arnold, MD is an infectious disease physician with a practice address in Annapolis, Maryland, and NPI 1255533154, issued on Jun 3, 2007. Check the license (Maryland D73712, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1255533154
Name
Ryan Arnold
Credential
MD
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
D73712 MD
Self-reported in NPPES; status is on the state search
Practice location
49 Old Solomons Island RD, Annapolis, MD 21401
Phone
(410) 573-9511
Enumerated
Jun 3, 2007
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 49 Old Solomons Island RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Elizabeth Appel, LCSW-CClinical Social Worker1205104981
  2. David Barnes, M.D.Specialist1336197920
  3. Brooke Barrett, LMSWSocial Worker1982213393
  4. Eric Bowman, PHDPsychologist1023099777
  5. Julie Catlin, PA-CPhysician Assistant1902907827
  6. Kambayanda Chengappa, MDInfectious Disease Physician1790829729

Verify Ryan Arnold in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D73712
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Maryland license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

68% fewer Medicare Part D claims than the average infectious disease physician in 2024

223 Medicare Part D claims for 46 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Ryan Arnold223
  2. Specialty average689

Most prescribed

  1. Cefazolin Sodium29 claims
  2. Amoxicillin22 claims
  3. Ceftriaxone18 claims
  4. Ertapenem17 claims
  5. Azithromycin16 claims
  6. Cefadroxil14 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

  1. Luminis Health Medical Group, LLCAnnapolis, MD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Infectious Disease Physician providers in Maryland

There are 410 infectious disease physician records in Maryland.

Other infectious disease physician records in Maryland

  1. Shastine Abate, MDBaltimore, MD1922199405
  2. Mark AbbruzzeseBethesda, MD1154310035
  3. Michael Abers, MDBethesda, MD1437562378
  4. Adrian Aceves-Hurtado, DOBethesda, MD1043708324
  5. Ademiposi Adegbulugbe, M.DCheverly, MD1942467386
  6. Brian Agan, M.D.Bethesda, MD1669434718
  7. Gloria Aggrey, MDRockville, MD1588839286
  8. Mohamed Al-Ibrahim, M.D.Baltimore, MD1245334325
  9. Carla Alexander, M.D.Baltimore, MD1134177793
  10. Maria AllendeGaithersburg, MD1245500370

Common questions

What is Ryan Arnold, MD's NPI number?

Ryan Arnold, MD's National Provider Identifier (NPI) is 1255533154, issued on Jun 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ryan Arnold, MD located?

The NPPES record lists a practice address at 49 Old Solomons Island RD, Annapolis, MD, 21401. Phone: (410) 573-9511. Providers update this record themselves, so call before visiting.

How can I verify Ryan Arnold, MD's license?

NPPES lists Maryland license number D73712, 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 Ryan Arnold, MD prescribe under Medicare Part D?

In 2024, Ryan Arnold, MD had 223 Medicare Part D claims for 46 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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) 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 27, 2026.