Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Katherine Lynn Mistretta, MD

Individual provider Orthopaedic Surgery Physician · NPI 1326543968

Dr. Katherine Lynn Mistretta, MD practises Orthopedic Surgery in Saint Louis, Missouri. Graduated from University of Maryland School of Medicine in 2018, 8 years ago. Practices with Dartmouth-Hitchcock Clinic, a 1,430-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Missouri and New Hampshire.

Years since qualifying
8
Trained at
University of Maryland School of Medicine
Licensed in
MO, NH
In the registry since
2018
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4921 Parkview Pl Dept Orthopaedic Surgery Ste 6A/6B/12A
Saint Louis, MO 63110-1032
Phone: (314) 747-2551
Fax: (314) 747-2598
Show map & directions

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

Additional practice locations (3)

  • 1 Medical Center Dr, Lebanon, NH 03756-0001 — (603) 650-5000
  • 10 Alice Peck Day Dr, Lebanon, NH 03766-2900 — (603) 448-3121
  • 273 County Rd, New London, NH 03257-5736 — (603) 526-2911

Specialties & licences

Adult Reconstructive Orthopaedic Surgery Physician (primary) Taxonomy 207XS0114X · Licence 2023021803 (MO)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 32152 (NH)

Record details

NPI number1326543968
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 26, 2018
Last updated in NPPESAugust 7, 2024
Certification dateAugust 7, 2024

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Dartmouth-Hitchcock Clinic — 1430 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 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 54 times · 89th percentile
Knee replacement 34 times · 68th 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 patients190
Services billed 228 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.

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 $15,008 3 payments
Travel and Lodging $4,644 14 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $2,465 24 payments · a meal or drink at a meeting or visit, not a fee

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. Those with a page here are linked.

Colleagues at Dartmouth-Hitchcock Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1430 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis