Stephen Krystjan Ronson, M.D.
Specialist · Baltimore, MD
Stephen Krystjan Ronson, M.D. is a specialist with a practice address in Baltimore, Maryland, and NPI 1861604589, issued on May 4, 2007. Check the license (Maryland D0067791, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen Krystjan Ronson
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- D0067791 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9105 Franklin Square Dr, Baltimore, MD 21237
- Phone
- (410) 682-6800
- Enumerated
- May 4, 2007
- Record last updated
- May 3, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (410) 682-2783
- Medicaid ID
- 416972700 MD
- Medicare enrollment
- Enrolled (PECOS I20090804000126); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 938 in Maryland → Look up another NPI →
Also registered at 9105 Franklin Square Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samantha Berlin, PA-CPhysician Assistant1841015187
Verify Stephen Krystjan Ronson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license D0067791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average specialist in 2024
185 Medicare Part D claims for 81 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Tamsulosin Hcl39 claims
- Dexamethasone22 claims
- Oxycodone Hcl19 claims
- Memantine Hcl17 claims
- Ondansetron Hcl15 claims
- Lidocaine Hcl Viscous13 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): 97.2 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 2 group practices
- Medstar Medical Group II LLCRosedale, MD
- Radiation Oncology Affiliates OF MarylandTowson, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Krystjan Ronson among 938 specialist records in Maryland
Stephen Krystjan Ronson, M.D. is one of 938 specialist records with a practice address in Maryland. 36% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 61% of them.
- NPI issued2007 · 61% of these records are older, 28% newer
- In a Medicare fileYes · 36% of these records are
- In the CMS Doctors and Clinicians fileYes · 23% of these records are
- Graduated2004 · median 1989 among the 220 with a school on file
- Record last updated2010 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Maryland
There are 938 specialist records in Maryland.
All 938 in Maryland → Every provider in Baltimore → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Cengiz Aygun, M.D.Baltimore, MD 212371174528798
- Jason Citron, M.D.Baltimore, MD 212371770586810
- Phillip Gilden, P.T.Baltimore, MD 212371568455210
- George Jabaji, M.D.Rosedale, MD 212371114962040
- Hassan Kassamali, M.D.Baltimore, MD 212371053324962
- David Perry, M.D.Baltimore, MD 212371568502326
- Martha GrafBaltimore, MD 212361225536337
- Joan Johns, CMTBaltimore, MD 212361740405919
Common questions
What is Stephen Krystjan Ronson, M.D.'s NPI number?
Stephen Krystjan Ronson, M.D.'s National Provider Identifier (NPI) is 1861604589, issued on May 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Krystjan Ronson, M.D. located?
The NPPES record lists a practice address at 9105 Franklin Square Dr, Baltimore, MD, 21237. Phone: (410) 682-6800. Providers update this record themselves, so call before visiting.
How can I verify Stephen Krystjan Ronson, M.D.'s license?
NPPES lists Maryland license number D0067791, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Stephen Krystjan Ronson, M.D. prescribe under Medicare Part D?
In 2024, Stephen Krystjan Ronson, M.D. had 185 Medicare Part D claims for 81 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Stephen Krystjan Ronson, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.2 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.