Katherine Jahnes, M.D.
Emergency Medicine Physician · Brooklyn, NY
Katherine Jahnes, M.D. is an emergency medicine physician with a practice address in Brooklyn, New York, and NPI 1447556154, issued on Jan 28, 2011. Check the license (New York 243266, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Katherine Jahnes
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 243266 NY
Self-reported in NPPES; status is on the state search - Practice location
- 339 Hicks St, Brooklyn, NY 11201
- Phone
- (917) 536-9300
- Enumerated
- Jan 28, 2011
- Record last updated
- Nov 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110809000699); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 339 Hicks St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Jahnes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 243266Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average emergency medicine physician in 2024
12 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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
- New York UniversityNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Jahnes among 5,025 emergency medicine physician records in New York
Katherine Jahnes, M.D. is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 47% of them.
- NPI issued2011 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2005 · median 2013 among the 3,232 with a school on file
- Record last updated2021 · 55% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
719 emergency medicine physician records list a practice address in Brooklyn
They are 719 of the 64,057 NPPES records with a practice address in Brooklyn, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Brooklyn → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Sylvie De Souza, MDBrooklyn, NY 112011477590875
- Darianne Elliott, MDBrooklyn, NY 112011801821814
- Kim Guishard, MDBrooklyn, NY 112011912929712
- Jeanette Guzman, MDBrooklyn, NY 112011407944895
- Carl Hsu, MDBrooklyn, NY 112011710909726
- Lisandro Irizarry, MDBrooklyn, NY 112011710909510
- Mark Leber, MDBrooklyn, NY 112011629090634
- Philip McPherson, MDBrooklyn, NY 112011336161132
Common questions
What is Katherine Jahnes, M.D.'s NPI number?
Katherine Jahnes, M.D.'s National Provider Identifier (NPI) is 1447556154, issued on Jan 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Jahnes, M.D. located?
The NPPES record lists a practice address at 339 Hicks St, Brooklyn, NY, 11201. Phone: (917) 536-9300. Providers update this record themselves, so call before visiting.
How can I verify Katherine Jahnes, M.D.'s license?
NPPES lists New York license number 243266, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Jahnes, M.D. prescribe under Medicare Part D?
In 2024, Katherine Jahnes, M.D. had 12 Medicare Part D claims; 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.