Jonathan S. Steer-Massaro, MD, MPH
Obstetrics & Gynecology Physician · Cleveland, OH
Jonathan S. Steer-Massaro, MD, MPH is an obstetrics & gynecology physician with a practice address in Cleveland, Ohio, and NPI 1407121734, issued on Mar 20, 2012. Check the license on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Jonathan S. Steer-Massaro
- Credential
- MD, MPH
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- DR.0066143 CO
265869 MA
Self-reported in NPPES; status is on the state search - Practice location
- 9500 Euclid Ave, Cleveland, OH 44195
- Phone
- (216) 372-1661
- Enumerated
- Mar 20, 2012
- Record last updated
- May 9, 2022
- Medicare enrollment
- Enrolled (PECOS I20220730000426); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,572 in Ohio → Look up another NPI →
Also registered at 9500 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cassandra Abbatemarco, CNPPsychiatric/Mental Health Nurse Practitioner1417645144
- Walid Abboud, MDInternal Medicine Physician1245295559
Verify Jonathan S. Steer-Massaro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of OhioCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
50 Medicare Part D claims for 23 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Metronidazole15 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.
2 hospitals and group practices
- Cleveland ClinicCleveland, OH · Acute Care Hospitals4 of 5 stars
- Wooster Clinic LLCWooster, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Jonathan S. Steer-Massaro among 1,572 obstetrics & gynecology physician records in Ohio
Jonathan S. Steer-Massaro, MD, MPH is one of 1,572 obstetrics & gynecology physician records with a practice address in Ohio. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 73% of them.
- NPI issued2012 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2012 · median 2004 among the 1,041 with a school on file
- Record last updated2022 · 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 207V00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Ohio
There are 1,572 obstetrics & gynecology physician records in Ohio.
All 1,572 in Ohio → Every provider in Cleveland → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Benito Alvarez, MDCleveland, OH 441951902848880
- Lesley Bicanovsky, DOCleveland, OH 441951689637852
- Michael Bloomfield, MDCleveland, OH 441951831153584
- Linda Bradley, MDCleveland, OH 441951639113657
- Tommaso Falcone, MDCleveland, OH 441951659316933
- Rhoda Goldschmidt, MDCleveland, OH 441951124018098
- Richard Hatch, M.D.Cleveland, OH 441951679528731
- Steven Klein, MDCleveland, OH 441951437148764
Common questions
What is Jonathan S. Steer-Massaro, MD, MPH's NPI number?
Jonathan S. Steer-Massaro, MD, MPH's National Provider Identifier (NPI) is 1407121734, issued on Mar 20, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan S. Steer-Massaro, MD, MPH located?
The NPPES record lists a practice address at 9500 Euclid Ave, Cleveland, OH, 44195. Phone: (216) 372-1661. Providers update this record themselves, so call before visiting.
How can I verify Jonathan S. Steer-Massaro, MD, MPH's license?
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 Jonathan S. Steer-Massaro, MD, MPH prescribe under Medicare Part D?
In 2024, Jonathan S. Steer-Massaro, MD, MPH had 50 Medicare Part D claims for 23 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.