NPPES file of Aug 9, 2026

Robert Louis Field, M.D.

Radiation Oncology Physician · Cleveland, OH

Robert Louis Field, M.D. is a radiation oncology physician with a practice address in Cleveland, Ohio, and NPI 1336183953, issued on Jun 15, 2006. Check the license (Ohio 35-04-6312-F, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336183953
Name
Robert Louis Field
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
35-04-6312-F OH
Self-reported in NPPES; status is on the state search
Practice location
2351 E 22ND St Dept OF, Cleveland, OH 44115
Phone
(216) 861-6200
Enumerated
Jun 15, 2006
Record last updated
Mar 7, 2023
Medicaid ID
0535139 OH
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest radiation oncology physician records → All 298 in Ohio → Look up another NPI →

Verify Robert Louis Field in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersState Medical Board of Ohio
    Search for license 35-04-6312-F    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Ohio license search

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56% fewer Medicare Part D claims than the average radiation oncology physician in 2024

59 Medicare Part D claims for 38 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Robert Field59
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl27 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.

Robert Louis Field among 298 radiation oncology physician records in Ohio

Robert Louis Field, M.D. is one of 298 radiation oncology physician records with a practice address in Ohio. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.

  • NPI issued2006 · 17% of these records are older, 58% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 76% of these records are
  • Record last updated2023 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Ohio

There are 298 radiation oncology physician records in Ohio.

All 298 in Ohio → Every provider in Cleveland → Radiation Oncology Physician nationwide →

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Cole Ryan Billena, MDCleveland, OH 441111265060073
  2. Katherine Kotinsley, MDCleveland, OH 441091356591580
  3. Ashley Sekhon, M.D.Cleveland, OH 441091225390255
  4. Kevin D'Rummo, M.D.Beachwood, OH 441221437512746
  5. Salem Alfaifi, MDCleveland, OH 441061437675741
  6. Atallah Baydoun, MDCleveland, OH 441061174964787
  7. Jennifer Dorth, M.D.Cleveland, OH 441061518132463
  8. Ryan Fecteau, M.D., PH.D.Cleveland, OH 441061215469333

Common questions

What is Robert Louis Field, M.D.'s NPI number?

Robert Louis Field, M.D.'s National Provider Identifier (NPI) is 1336183953, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Louis Field, M.D. located?

The NPPES record lists a practice address at 2351 E 22ND St Dept OF, Cleveland, OH, 44115. Phone: (216) 861-6200. Providers update this record themselves, so call before visiting.

How can I verify Robert Louis Field, M.D.'s license?

NPPES lists Ohio license number 35-04-6312-F, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Robert Louis Field, M.D. prescribe under Medicare Part D?

In 2024, Robert Louis Field, M.D. had 59 Medicare Part D claims for 38 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.