Mark David Fersch, DO

Individual provider Neuromusculoskeletal Medicine & OMM Physician · NPI 1104445030

Mark David Fersch, DO is registered under Family Practice in Lutherville Timonium, Maryland. Graduated from University of North Texas Hsc, College of Osteopathic Med in 2020, 6 years ago. Practices with Greater Baltimore Medical Center Inc, a 348-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying: 6
Trained at: University of North Texas Hsc, College of Osteopathic Med
Licensed in: MD
In the registry since: 2020
Specialties on file: 2

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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

63 E Padonia Rd Ste 100
Lutherville Timonium, MD 21093-2306
Phone: (443) 589-5252

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

Family Medicine Physician (primary)	Taxonomy 207Q00000X · Licence D0100636 (MD)
Neuromusculoskeletal Medicine & OMM Physician	Taxonomy 204D00000X · Licence D0100636 (MD)

Record details

NPI number	1104445030
Entity type	Individual (Type 1)
Gender	Male
Credentials	DO
Sole proprietor	No
NPI enumerated	April 10, 2020
Last updated in NPPES	June 27, 2024
Certification date	June 27, 2024

Medicare enrollment

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

Medicare specialty	FAMILY PRACTICE
Also practises	INTERNAL MEDICINE
Medical school	UNIVERSITY OF NORTH TEXAS HSC, COLLEGE OF OSTEOPATHIC MED
Graduated	2020 (6 years in practice)
Group practice	Greater Baltimore Medical Center Inc — 348 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Telehealth	Offers telehealth services
Practice locations	10 on file with Medicare

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 patients	53
Services billed	138 a service is one billed item, such as a visit, a test or a procedure
Average patient age	73

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.

Food and Beverage	$127 4 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.

Greater Baltimore Medical Center Hospital · Baltimore, MD

Colleagues at Greater Baltimore Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 348 clinicians in the practice; 12 are shown here.

Chunhua Cao, PA-C Physician Assistant · Baltimore, MD
Dr. Shauna Marie Costinett, MD Surgery Physician · Baltimore, MD
Mrs. Bridget Garrison, AUD Audiologist · Baltimore, MD
Dr. Allison Jensen, MD Ophthalmology Physician · Baltimore, MD
Mellisa Mauldin, PA-C Physician Assistant · Parkville, MD
Mrs. Rebecca S Mooney, CRNP Nurse Practitioner · Aberdeen, MD
Dr. Ibukunolupo Odunayo Oni, MBBS, MPH Infectious Disease Physician · Baltimore, MD
Dr. Vaibhav A Parekh, MD Internal Medicine Physician · Baltimore, MD
Michael S Sellman, MD Neurology Physician · Towson, MD
Dr. Janet Sunness, MD Ophthalmology Physician · Baltimore, MD
Kalyn Warren Acute Care Nurse Practitioner · Towson, MD
Ari Zaiman, MD Critical Care Medicine (Internal Medicine) Physician · Towson, MD