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

Dr. Sean Charles Lucas Frost, MD

Individual provider Orthopaedic Surgery Physician · NPI 1457375248

Dr. Sean Charles Lucas Frost, MD practises Orthopedic Surgery in Nashua, New Hampshire. Qualified in 1999, 27 years ago. Practices with Mary Hitchcock Memorial Hospital, a 1,266-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
27
Licensed in
NH
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

21 E Hollis St
Nashua, NH 03060-2928
Phone: (603) 577-4000
Fax: (603) 640-1228
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Reconstructive Orthopaedic Surgery Physician (primary) Taxonomy 207XS0114X · Licence 12875 (NH)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 12875 (NH)

Record details

NPI number1457375248
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 26, 2006
Last updated in NPPESJanuary 12, 2026
Certification dateJanuary 12, 2026

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Mary Hitchcock Memorial Hospital — 1266 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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 42 times · 84th percentile
Knee replacement 58 times · 82nd percentile

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 patients273
Services billed 551 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mary Hitchcock Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1266 clinicians in the practice; 12 are shown here.

Other providers in Nashua