Katherine Marantz Penziner, MD
Hospitalist Physician · New York, NY
Katherine Marantz Penziner, MD is a hospitalist physician with a practice address in New York, New York, and NPI 1285124040, issued on May 16, 2018. Check the license (New York 316375-01, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Katherine Marantz Penziner
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 316375-01 NY
Self-reported in NPPES; status is on the state search - Practice location
- 525 E 68TH St # 331, New York, NY 10065
- Phone
- (212) 746-4071
- Enumerated
- May 16, 2018
- Record last updated
- Mar 10, 2023
- Medicare enrollment
- Enrolled (PECOS I20221024001533); accepts Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 2,067 in New York → Look up another NPI →
Also registered at 525 E 68TH St # 331
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohini ArasInternal Medicine Physician1295093508
- Elijah Douglass, M.D.Hospitalist Physician1669866570
- Nina Le, MDInternal Medicine Physician1962781666
- Jyoti Mathad, MDHospitalist Physician1902940356
- Ugochi NwosuInternal Medicine Physician1316332745
- Paula Roy-Burman, M.D.Hospitalist Physician1750524203
Verify Katherine Marantz Penziner 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 316375-01Check 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 hospitalist physician in 2024
39 Medicare Part D claims for 15 beneficiaries, against an average of 521 among the 21,613 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Weill Medical College OF CornellNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Marantz Penziner among 2,067 hospitalist physician records in New York
Katherine Marantz Penziner, MD is one of 2,067 hospitalist physician records with a practice address in New York. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 64% of them.
- NPI issued2018 · 64% of these records are older, 31% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2018 · median 2013 among the 1,716 with a school on file
- Record last updated2023 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in New York
There are 2,067 hospitalist physician records in New York.
All 2,067 in New York → Every provider in New York → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jeffrey Ball, MDNew York, NY 100651235195579
- Ellen Bondar, MDNew York, NY 100651992803340
- Rachel Dubroff, MDNew York, NY 100651942488366
- Nell Eisenberg, M.D.New York, NY 100651619063690
- Ezra Gabbay, M.D.New York, NY 100651285831099
- Laurie Gordon, MDNew York, NY 100651962594705
- Nathaniel Hupert, MDNew York, NY 100651861589947
- Susan Krekun, MDNew York, NY 100651295766970
Common questions
What is Katherine Marantz Penziner, MD's NPI number?
Katherine Marantz Penziner, MD's National Provider Identifier (NPI) is 1285124040, issued on May 16, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marantz Penziner, MD located?
The NPPES record lists a practice address at 525 E 68TH St # 331, New York, NY, 10065. Phone: (212) 746-4071. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marantz Penziner, MD's license?
NPPES lists New York license number 316375-01, 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 Marantz Penziner, MD prescribe under Medicare Part D?
In 2024, Katherine Marantz Penziner, MD had 39 Medicare Part D claims for 15 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Katherine Marantz Penziner, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.