Ronald Joseph Ostrom, D.O.
Emergency Medicine Physician · Tulare, CA
Ronald Joseph Ostrom, D.O. is an emergency medicine physician with a practice address in Tulare, California, and NPI 1730169855, issued on Jan 17, 2006. Check the license (California 20A7663, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald Joseph Ostrom
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A7663 CA
Self-reported in NPPES; status is on the state search - Practice location
- 869 N Cherry St, Tulare, CA 93274
- Phone
- (559) 688-0821
- Enumerated
- Jan 17, 2006
- Record last updated
- Apr 16, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid IDs
- 1730169855 CA
00AX76630 CA - Medicare enrollment
- Enrolled (PECOS I20040303001088); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 869 N Cherry St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Manasik AbakerStudent in an Organized Health Care Education/Training Program1407797194
- Amber Ali, DOStudent in an Organized Health Care Education/Training Program1952245888
- Mohammed Mubasheer Ali, MDStudent in an Organized Health Care Education/Training Program1942056346
- Randy Barclay, P.A.Family Health Clinical Nurse Specialist1134212756
- Harold Boulton, M.D.Emergency Medicine Physician1710911623
- Marcos Canas, MDAnesthesiology Physician1780638197
Verify Ronald Joseph Ostrom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7663Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10.8 times the Medicare Part D claims of the average emergency medicine physician in 2024
2,443 Medicare Part D claims for 274 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 547 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen239 claims
- Gabapentin131 claims
- Oxycodone Hcl102 claims
- Albuterol Sulfate Hfa83 claims
- Meloxicam82 claims
- Alprazolam67 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.
Industry payments in 2024: $978.81
17 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 12,335 providers of this specialty with any payment received $953.79 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 3 group practices
- Active Life Medical And WellnessBakersfield, CA
- Southern Inyo Healthcare DistrictLone Pine, CA
- West Side Health Care DistrictTaft, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Joseph Ostrom among 7,751 emergency medicine physician records in California
Ronald Joseph Ostrom, D.O. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1999 · median 2011 among the 4,560 with a school on file
- Record last updated2015 · 59% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Tulare → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Harold Boulton, M.D.Tulare, CA 932741710911623
- David Castro Palomino, DOTulare, CA 932741871170092
- Niklas ErikssonTulare, CA 932741629500244
- Ronald Smith, M.D.Tulare, CA 932741467498873
- Jerry Jacobson, M.D.Visalia, CA 932771285644617
- Peter Aijian, M.D.Visalia, CA 932911518978287
- Reagan Bellinghausen, M.D.Porterville, CA 932571790796571
- Dewane Brueske, M.D.Porterville, CA 932571750392536
Common questions
What is Ronald Joseph Ostrom, D.O.'s NPI number?
Ronald Joseph Ostrom, D.O.'s National Provider Identifier (NPI) is 1730169855, issued on Jan 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Joseph Ostrom, D.O. located?
The NPPES record lists a practice address at 869 N Cherry St, Tulare, CA, 93274. Phone: (559) 688-0821. Providers update this record themselves, so call before visiting.
How can I verify Ronald Joseph Ostrom, D.O.'s license?
NPPES lists California license number 20A7663, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronald Joseph Ostrom, D.O. prescribe under Medicare Part D?
In 2024, Ronald Joseph Ostrom, D.O. had 2,443 Medicare Part D claims for 274 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.