DR. NATHAN ROSS EHMER D.O.
NPI 1871767673
Orthopaedic Surgery - Orthopaedic Trauma in Redding, CA

Q: What is Nathan Ehmer's NPI number?

The NPI number for Nathan Ehmer is 1871767673. It was assigned to this individual provider in the NPPES registry on April 14, 2008.

Q: What is Nathan Ehmer's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Trauma, with taxonomy code 207XX0801X.

Q: When was this NPI record last updated?

The NPPES record for Nathan Ehmer was last updated on August 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 14, 2008PECOS EnrolledAccepts Medicare Assignment

29.84/100

CMS Quality Rating

2510 AIRPARK DR STE 301, REDDING, CA 96001(530) 242-3500(530) 242-3546 Get Directions Write a Review

NPPES record last updated: August 4, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 4, 2025, Jul 14, 2023, Jan 3, 2022 and 1 more (4 updates tracked since 2019).

On this page

About Dr. Nathan Ross Ehmer D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NATHAN ROSS EHMER D.O. (NPI 1871767673) is an individual orthopaedic trauma provider in Redding, California, licensed in California (20A 10366) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2003).

NPPES Registry Identity

NPI1871767673

Entity TypeIndividualMale

Primary Taxonomy207XX0801X

Provider Legal NameDR. NATHAN ROSS EHMERCredential: D.O.

Location Address2510 AIRPARK DR STE 301Redding, CA 96001-2462

Mailing Address3400 Data DrRancho Cordova, CA 95670-7956

Phone(530) 242-3500

Fax(530) 242-3546

Sole ProprietorNo

Medical School CMSArizona College Of Osteopathic Medicine Mid Western UniversityGraduated 2003

Enumeration DateApril 14, 2008

Last NPPES UpdateAugust 4, 20254 updates tracked since enumeration

NPPES CertifiedAugust 4, 2025

✔ NPI 1871767673 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Orthopaedic TraumaAllopathic & Osteopathic Physicians

Taxonomy Code207XX0801X

License✔ Licensed in CA · 20A 10366

Definition

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis.

2510 AIRPARK DR STE 301, Redding, CA 96001

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nathan Ross Ehmer D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8628127511

PECOS Enrollment IDI20090526000270

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Nathan Ehmer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dignity Health Medical Foundation

Same address

Multi-Specialty

2510 AIRPARK DR STE 301
Redding, CA 96001

Reassigned Medicare billing, California enrollment
1,191 clinicians in this Medicare group

NPI 1912288432 (916) 379-2948

Shasta Orthopedics & Sports Medicine A Medical Corporation

1.4 mi

Orthopaedic Surgery

1255 LIBERTY STREET
Redding, CA 96001

Reassigned Medicare billing, California enrollment
42 clinicians in this Medicare group

NPI 1750493979 (530) 246-2467

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

181 services128 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

118 services116 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

86 services86 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

42 services33 patients

Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement 27236

This procedure involves treating a fracture at the top of your thigh bone. A stabilizing device or prosthetic replacement is placed to aid in healing. This helps restore mobility and function while reducing pain. The treatment aims for a quick and safe recovery.

29 services29 patients

Treatment of broken neck of thigh bone with bone implant 27245

This procedure involves repairing a fractured thigh bone by inserting a bone implant. The implant helps stabilize the bone, allowing it to heal correctly. It's performed under anesthesia and requires a hospital stay for recovery.

25 services24 patients

X-ray of wrist, 2 views 73100

An X-ray of the wrist, 2 views, is a diagnostic procedure where two different images of your wrist are taken using a small amount of radiation. This helps identify any abnormalities or injuries such as fractures or arthritis. It's a quick, non-invasive process.

25 services17 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

24 services24 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

23 services23 patients

X-ray of hip, 2-3 views 73502

22 services22 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

18 services18 patients

Closed treatment of broken and/or dislocated pelvis and/or sacrum 27197

Closed treatment of a broken or dislocated pelvis/sacrum involves non-surgical methods to realign the bones. This could include pain management, immobilization with a brace or cast, and physical therapy to restore movement and strength.

14 services14 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

12 services12 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

11 services11 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

29.84/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

Promoting Interoperability

Improvement Activities

Cost

99.47

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Wrist hand orthosis, wrist extension control cock-up, non molded, prefabricated, off-the-shelf L3908

DME-Orthotic Devices · category DF000N

1 supplier20 claims21 services$60.96 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MOLLY AMANDA HARTZLER MD

Orthopaedic Surgery