Steven Ater, DO
Obstetrics & Gynecology Physician · Phoenix, AZ
Steven Ater, DO is an obstetrics & gynecology physician with a practice address in Phoenix, Arizona, and NPI 1487238853, issued on May 11, 2021. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Steven Ater
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- Practice location
- 1441 N 12TH St, Phoenix, AZ 85006
- Phone
- (602) 521-5700
- Enumerated
- May 11, 2021
- Entity
- Type 1 · individual
Also registered at 1441 N 12TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessica Alfonzo, MDStudent in an Organized Health Care Education/Training Program1295430411
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- Olivia Aranda, MSN-FNP-CFamily Nurse Practitioner1164151858
- Daniel Aschenbrener, D.O.Orthopaedic Surgery Physician1386600955
- Don Beresini, MDDiagnostic Radiology Physician1386600757
Verify Steven Ater in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
90% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
19 Medicare Part D claims, against an average of 188 among the 27,363 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.
One hospital or facility affiliation
- Yuma Regional Medical CenterYuma, AZ · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Obstetrics & Gynecology Physician providers in Arizona
There are 806 obstetrics & gynecology physician records in Arizona.
Other obstetrics & gynecology physician records in Arizona
- Michelle Abbate, MDTucson, AZ1184111940
- Judith Adams, MDGilbert, AZ1457644759
- Julie Adams, DOChandler, AZ1285607333
- Karen Adams, MDPhoenix, AZ1023192333
- Andrew Adamson, DOMesa, AZ1124330220
- Elana Addis, M.DTucson, AZ1730150582
- Eugene Adel, M.D.Mesa, AZ1609301621
- Oluwatoyosi Adeoye, MDPhoenix, AZ1316679921
- Farshad Agahi, M.D.Phoenix, AZ1386886430
- Enyonam Agamasu, M.D.Mesa, AZ1295023935
Common questions
What is Steven Ater, DO's NPI number?
Steven Ater, DO's National Provider Identifier (NPI) is 1487238853, issued on May 11, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Steven Ater, DO located?
The NPPES record lists a practice address at 1441 N 12TH St, Phoenix, AZ, 85006. Phone: (602) 521-5700. Providers update this record themselves, so call before visiting.
How can I verify Steven Ater, DO's license?
Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steven Ater, DO prescribe under Medicare Part D?
In 2024, Steven Ater, DO had 19 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.