Steven P. Yamaguchi, MD
Emergency Medicine Physician · Fairfield, OH
Steven P. Yamaguchi, MD is an emergency medicine physician with a practice address in Fairfield, Ohio, and NPI 1912958349, issued on May 12, 2006. Check the license (Ohio 35071257Y, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Steven P. Yamaguchi
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 35071257Y OH
Self-reported in NPPES; status is on the state search - Practice location
- 3000 Mack RD, Fairfield, OH 45014
- Phone
- (513) 870-7001
- Enumerated
- May 12, 2006
- Record last updated
- May 15, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (513) 603-8174
- Medicaid ID
- 2026953 OH
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,002 in Ohio → Look up another NPI →
Also registered at 3000 Mack RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nitin Anand, MDAnesthesiology Physician1598152720
- Sarah AndrewsCertified Registered Nurse Anesthetist1952760167
- Kofi Ansah, MDInternal Medicine Physician1538798525
- Angela Beard, RNCertified Registered Nurse Anesthetist1831189208
Verify Steven P. Yamaguchi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35071257YCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% more Medicare Part D claims than the average emergency medicine physician in 2024
418 Medicare Part D claims for 262 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 59 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen52 claims
- Ondansetron Odt37 claims
- Ciprofloxacin Hcl35 claims
- Prednisone28 claims
- Azithromycin25 claims
- Amoxicillin-Clavulanate Potass22 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.
Steven P. Yamaguchi among 3,002 emergency medicine physician records in Ohio
Steven P. Yamaguchi, MD is one of 3,002 emergency medicine physician records with a practice address in Ohio. 82% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 63% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2008 · 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 207P00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 emergency medicine physician records list a practice address in Fairfield
They are 19 of the 1,280 NPPES records with a practice address in Fairfield, and 3,002 emergency medicine physician records in Ohio.
All 3,002 in Ohio → Every provider in Fairfield → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Anthony Albano, M.D.Fairfield, OH 450141982655486
- Michael Fain, M.D.Fairfield, OH 450141891746335
- Douglas Finefrock, D.O.Fairfield, OH 450141801847264
- Donald Gayda, D.O.Fairfield, OH 450141669423786
- Jeffery Kaufman, D.O.Fairfield, OH 450141730381088
- Kenneth Koster, MDFairfield, OH 450141386696326
- Douglas Krejsa, MDFairfield, OH 450141104993633
- David Romano, MDFairfield, OH 450141619929163
Common questions
What is Steven P. Yamaguchi, MD's NPI number?
Steven P. Yamaguchi, MD's National Provider Identifier (NPI) is 1912958349, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven P. Yamaguchi, MD located?
The NPPES record lists a practice address at 3000 Mack RD, Fairfield, OH, 45014. Phone: (513) 870-7001. Providers update this record themselves, so call before visiting.
How can I verify Steven P. Yamaguchi, MD's license?
NPPES lists Ohio license number 35071257Y, 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 Steven P. Yamaguchi, MD prescribe under Medicare Part D?
In 2024, Steven P. Yamaguchi, MD had 418 Medicare Part D claims for 262 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.