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

Dr. Joseph Nathaniel Ruhala, DO

Individual provider Surgical Critical Care Physician · NPI 1922415421

Dr. Joseph Nathaniel Ruhala, DO practises General Surgery in Frederick, Maryland. Graduated from West Virginia School of Osteopathic Medicine in 2014, 12 years ago. Practices with Amber Hill Physical Therapy Inc, a 333-clinician group, works from 14 locations and accepts Medicare assignment. Licensed in Maryland and Pennsylvania.

Years since qualifying
12
Trained at
West Virginia School of Osteopathic Medicine
Licensed in
MD, PA
In the registry since
2014
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

194 Thomas Johnson Dr
Frederick, MD 21702-4679
Phone: (240) 215-6310
Show map & directions

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

Additional practice locations (13)

  • 16403 Old Emmitsburg Rd, Emmitsburg, MD 21727-8929 — (240) 215-6310
  • 230 W Patrick St, Frederick, MD 21701-6945 — (240) 215-6310
  • 400 W 7th St, Frederick, MD 21701-4506 — (240) 215-6310
  • 501 W 7th St, Frederick, MD 21701-4586 — (240) 215-6310
  • 1562 Opossumtown Pike, Frederick, MD 21702-4920 — (240) 215-6310
  • 75 Thomas Johnson Dr, Frederick, MD 21702-4895 — (240) 215-6310
  • 141 Thomas Johnson Dr, Frederick, MD 21702-4502 — (301) 846-0100
  • 7211 Bank Ct, Frederick, MD 21703-8483 — (240) 215-6310
  • 3430 Worthington Blvd, Frederick, MD 21704-7017 — (240) 215-6310
  • 504 E Ridgeville Blvd, Mount Airy, MD 21771-5942 — (240) 215-6310
  • 3000d Ventrie Ct, Myersville, MD 21773-7817 — (240) 215-6310
  • 15 E Frederick St, Walkersville, MD 21793-8234 — (240) 215-6310
  • 500 University Dr, Hershey, PA 17033-2360 — (717) 531-8887

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence H95555 (MD)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence OS018024 (PA)
Trauma Surgery Physician Taxonomy 2086S0127X · Licence OS018024 (PA)

Record details

NPI number1922415421
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJuly 16, 2014
Last updated in NPPESOctober 25, 2022
Certification dateOctober 25, 2022

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolWEST VIRGINIA SCHOOL OF OSTEOPATHIC MEDICINE
Graduated 2014 (12 years in practice)
Group practice Amber Hill Physical Therapy Inc — 333 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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.

Hernia repair - groin (open) 13 times · 92nd percentile
Colonoscopy 1–10 times
Hernia repair (minimally invasive) 1–10 times
Removal of tissue 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 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 patients126
Services billed 225 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.

Education $1,500 1 payment · educational material or training, 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.

Colleagues at Amber Hill Physical Therapy Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 333 clinicians in the practice; 12 are shown here.

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