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

Nathaniel D Witmer, DPM

Individual provider Foot & Ankle Surgery Podiatrist · NPI 1497172712

Nathaniel D Witmer, DPM practises Podiatry in Valencia, California. Graduated from California School of Podiatric Medicine in 2014, 12 years ago. Practices with Providence Facey Medical Foundation, a 323-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Illinois.

Years since qualifying
12
Trained at
California School of Podiatric Medicine
Licensed in
CA, IL
In the registry since
2014
Specialties on file
3
What do these letters mean?
DPM — Doctor of Podiatric Medicine
A foot and ankle physician and surgeon.

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Practice location Address checks out

23803 McBean Pkwy
Valencia, CA 91355-2001
Phone: (661) 481-2400
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2900 N Lake Shore Dr, Chicago, IL 60657-5640 — (773) 665-3000

Specialties & licences

Podiatrist (primary) Taxonomy 213E00000X · Licence E5395 (CA)
Foot & Ankle Surgery Podiatrist Taxonomy 213ES0103X · Licence 016.005661 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1497172712
Entity typeIndividual (Type 1)
GenderMale
Credentials DPM
Sole proprietorNo
NPI enumeratedMarch 25, 2014
Last updated in NPPESMarch 17, 2018

Medicare enrollment

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

Medicare specialtyPODIATRY
Medical schoolCALIFORNIA SCHOOL OF PODIATRIC MEDICINE
Graduated 2014 (12 years in practice)
Group practice Providence Facey Medical Foundation — 323 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.

Removal or shaving of skin growth 42 times · 78th percentile
Removal of nail tissue 205 times · 75th percentile
Removal of tissue 13 times · 64th percentile
Removal of skin lesions 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 patients157
Services billed 694 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Providence Facey Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 323 clinicians in the practice; 12 are shown here.

Other providers in Valencia