Natalie Jill Klar, M.D.
Medical Oncology Physician · New York, NY
Natalie Jill Klar, M.D. is a medical oncology physician with a practice address in New York, New York, and NPI 1013371392, issued on Apr 12, 2016. Check the license (New York 298727, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Natalie Jill Klar
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 298727 NY
Self-reported in NPPES; status is on the state search - Practice location
- 530 1St Ave, New York, NY 10016
- Phone
- (212) 263-4689
- Enumerated
- Apr 12, 2016
- Record last updated
- Nov 4, 2022
- Fax
- (646) 754-7546
- Medicare enrollment
- Enrolled (PECOS I20220630000409); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 548 in New York → Look up another NPI →
Also registered at 530 1St Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lenard Adler, M.D.Psychiatry Physician1235185505
- Melissa Alazraki, RD, CDERegistered Dietitian1780217505
- Lena Alsabban, BDSOral and Maxillofacial Surgery (Dentist)1386842615
- Nancy Amoroso, M.D.Pulmonary Disease Physician1740449917
Verify Natalie Jill Klar 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 298727Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average medical oncology physician in 2024
188 Medicare Part D claims for 81 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Letrozole100 claims
- Anastrozole36 claims
- Raloxifene Hcl16 claims
- Tamoxifen Citrate13 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): 84.5 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).
Industry payments in 2024: $143.00
1 payment: food and beverage; the largest payer was Daiichi Sankyo Inc. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
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).
Natalie Jill Klar among 548 medical oncology physician records in New York
Natalie Jill Klar, M.D. is one of 548 medical oncology physician records with a practice address in New York. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 83% of them.
- NPI issued2016 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2016 · median 2005 among the 389 with a school on file
- Record last updated2022 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in New York
There are 548 medical oncology physician records in New York.
All 548 in New York → Every provider in New York → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Marc Ballas, M.D., M.P.H.New York, NY 100161952527269
- Nancy Chan, MDNew York, NY 100161275860892
- Daniel Cho, M.D.New York, NY 100161750306783
- Francisco Esteva, M.D., PHDNew York, NY 100161609974245
- Robert Ilaria, M.D.New York, NY 100161720177934
- Arjun Iyengar, M.DNew York, NY 100161053603340
- Janice MehnertNew York, NY 100161962617472
- Coral Omene, M.D., PH.DNew York, NY 100161861688988
Common questions
What is Natalie Jill Klar, M.D.'s NPI number?
Natalie Jill Klar, M.D.'s National Provider Identifier (NPI) is 1013371392, issued on Apr 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Natalie Jill Klar, M.D. located?
The NPPES record lists a practice address at 530 1St Ave, New York, NY, 10016. Phone: (212) 263-4689. Providers update this record themselves, so call before visiting.
How can I verify Natalie Jill Klar, M.D.'s license?
NPPES lists New York license number 298727, 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 Natalie Jill Klar, M.D. prescribe under Medicare Part D?
In 2024, Natalie Jill Klar, M.D. had 188 Medicare Part D claims for 81 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Natalie Jill Klar, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.5 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.