Nathan Ross Ehmer, D.O.
Orthopaedic Trauma Physician · Redding, CA
Nathan Ross Ehmer, D.O. is an orthopaedic trauma physician with a practice address in Redding, California, and NPI 1871767673, issued on Apr 14, 2008. Check the license (California 20A 10366, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathan Ross Ehmer
- Credential
- D.O.
- Primary taxonomy
- Orthopaedic Trauma Physician 207XX0801X
- License number
- 20A 10366 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2510 Airpark Dr Ste 301, Redding, CA 96001
- Phone
- (530) 242-3500
- Enumerated
- Apr 14, 2008
- Record last updated
- Aug 4, 2025
- Fax
- (530) 242-3546
- Medicare enrollment
- Enrolled (PECOS I20090526000270); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2003
- Entity
- Type 1 · individual
8 nearest orthopaedic trauma physician records → All 114 in California → Look up another NPI →
Also registered at 2510 Airpark Dr Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Joseph Campanelli, MDOtolaryngology Physician1487690749
- Melissa DaugaardNurse Practitioner1760825574
- Brian Davis, P.A.Medical Physician Assistant1508946351
- Molly Hartzler, MDOrthopaedic Surgery Physician1053757054
- Douglas Navasartian, M.D.Orthopaedic Surgery Physician1356780944
Verify Nathan Ross Ehmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 10366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average orthopaedic trauma physician in 2024
32 Medicare Part D claims for 30 beneficiaries, against an average of 151 among the 627 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 30 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen18 claims
- Tramadol Hcl11 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.
The MIPS final score for 2023 (Medicare payment program): 29.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $490.15
10 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 722 providers of this specialty with any payment received $15,814.30 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 one group practice
- Dignity Health Medical FoundationRedding, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Ross Ehmer among 114 orthopaedic trauma physician records in California
Nathan Ross Ehmer, D.O. is one of 114 orthopaedic trauma physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 38% of them.
- NPI issued2008 · 38% of these records are older, 53% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2003 · median 2009 among the 95 with a school on file
- Record last updated2025 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0801X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Trauma Physician providers in California
There are 114 orthopaedic trauma physician records in California.
All 114 in California → Every provider in Redding → Orthopaedic Trauma Physician nationwide →
The 8 orthopaedic trauma physician records with the nearest ZIP codes
- Aaron Osborne, DORedding, CA 960011265460687
- Peter Barry, MDChico, CA 959261083627657
- Michael Kuhne, MDChico, CA 959261942386040
- Meir Marmor, M.D.Chico, CA 959261033348461
- Edgar Vyhmeister, M.D.Chico, CA 959261982696571
- Christian Bromfield, MDSacramento, CA 958231639336076
- Daniel D Amico, MDSacramento, CA 958231275505380
- Jonathan CoppSacramento, CA 958171457738528
Common questions
What is Nathan Ross Ehmer, D.O.'s NPI number?
Nathan Ross Ehmer, D.O.'s National Provider Identifier (NPI) is 1871767673, issued on Apr 14, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Ross Ehmer, D.O. located?
The NPPES record lists a practice address at 2510 Airpark Dr Ste 301, Redding, CA, 96001. Phone: (530) 242-3500. Providers update this record themselves, so call before visiting.
How can I verify Nathan Ross Ehmer, D.O.'s license?
NPPES lists California license number 20A 10366, 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 Nathan Ross Ehmer, D.O. prescribe under Medicare Part D?
In 2024, Nathan Ross Ehmer, D.O. had 32 Medicare Part D claims for 30 beneficiaries; the average among orthopaedic trauma physician prescribers was 151. Part D covers Medicare prescriptions only.
What is Nathan Ross Ehmer, D.O.'s MIPS final score?
The 2023 MIPS final score is 29.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.