Janina Kathleen Gregorski, M.D.
Emergency Medicine Physician · Bethesda, MD
Janina Kathleen Gregorski, M.D. is an emergency medicine physician with a practice address in Bethesda, Maryland, and NPI 1932636289, issued on May 17, 2017. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Janina Kathleen Gregorski
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 0101266124 VA
Self-reported in NPPES; status is on the state search - Practice location
- 4494 N Palmer RD, Bethesda, MD 20889
- Phone
- (240) 750-0629
- Enumerated
- May 17, 2017
- Record last updated
- Oct 4, 2024
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,190 in Maryland → Look up another NPI →
Also registered at 4494 N Palmer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Katrina Blommel, MDStudent in an Organized Health Care Education/Training Program1770386849
- Jessica Bunin, M.D.Critical Care Medicine (Internal Medicine) Physician1689697039
- Ulgen Fideli, PHD, MSPH, PA-CMedical Physician Assistant1780626473
- Kim Forman, MDEmergency Medicine Physician1609847706
Verify Janina Kathleen Gregorski 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
93% fewer Medicare Part D claims than the average emergency medicine physician in 2024
16 Medicare Part D claims for 13 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Janina Kathleen Gregorski among 1,190 emergency medicine physician records in Maryland
Janina Kathleen Gregorski, M.D. is one of 1,190 emergency medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 80% of them.
- NPI issued2017 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2024 · 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 207P00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Maryland
There are 1,190 emergency medicine physician records in Maryland.
All 1,190 in Maryland → Every provider in Bethesda → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Sean Barbabella, D.O.Bethesda, MD 208891427028331
- Bradley Bunten, MDBethesda, MD 208891821074899
- Bradley Butler, MDBethesda, MD 208891265479950
- Robert Donovan, M.D.Bethesda, MD 208891427035054
- Katherine Douglass, MDBethesda, MD 208891679555668
- Michelle Ervin, MDBethesda, MD 208891568401321
- Brian Ferguson, D.O.Bethesda, MD 208891417996620
- Kim Forman, MDBethesda, MD 208891609847706
Common questions
What is Janina Kathleen Gregorski, M.D.'s NPI number?
Janina Kathleen Gregorski, M.D.'s National Provider Identifier (NPI) is 1932636289, issued on May 17, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Janina Kathleen Gregorski, M.D. located?
The NPPES record lists a practice address at 4494 N Palmer RD, Bethesda, MD, 20889. Phone: (240) 750-0629. Providers update this record themselves, so call before visiting.
How can I verify Janina Kathleen Gregorski, M.D.'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 Janina Kathleen Gregorski, M.D. prescribe under Medicare Part D?
In 2024, Janina Kathleen Gregorski, M.D. had 16 Medicare Part D claims for 13 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.