Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Nathaniel Elliot Schaffer, MD, PHD

Individual provider Orthopaedic Surgery Physician · NPI 1679001747

Nathaniel Elliot Schaffer, MD, PHD practises Orthopedic Surgery in Denver, Colorado. Graduated from University of Texas Southwestern Medical School at Dallas in 2017, 9 years ago. Practices with Denver Health and Hospital Authority, a 829-clinician group and accepts Medicare assignment. Licensed in Colorado, Michigan, Tennessee and Washington.

Years since qualifying
9
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
CO, MI, TN, WA
In the registry since
2017
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

777 Bannock St
Denver, CO 80204-4597
Phone: (303) 436-4949
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Trauma Physician (primary) Taxonomy 207XX0801X · Licence 0075582 (CO)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 4301112013 (MI)
Orthopaedic Trauma Physician Taxonomy 207XX0801X · Licence 65391 (TN)
Orthopaedic Trauma Physician Taxonomy 207XX0801X · Licence MD61443193 (WA)

Record details

NPI number1679001747
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 1, 2017
Last updated in NPPESAugust 20, 2025
Certification dateAugust 20, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2017 (9 years in practice)
Group practice Denver Health And Hospital Authority — 829 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hip replacement 1–10 times
Melanoma (skin cancer) excision 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients69
Services billed 184 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $1,500 1 payment
Food and Beverage $949 8 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $939 3 payments · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Denver Health and Hospital Authority

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 829 clinicians in the practice; 12 are shown here.

Other providers in Denver