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

Dr. Mark Ferlan, DO

Individual provider Internal Medicine Physician · NPI 1124230370

Dr. Mark Ferlan, DO practises Internal Medicine in Manchester, New Hampshire. Graduated from Philadelphia College of Osteopathic Medicine in 2004, 22 years ago. Practices with St Joseph Hospital of Nashua Nh, a 268-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
22
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
NH
In the registry since
2007
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.

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Practice location Address checks out

775 S Main St
Manchester, NH 03102-5143
Phone: (603) 625-6198
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 13956 (NH)

Record details

NPI number1124230370
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 3, 2007
Last updated in NPPESAugust 16, 2021
Certification dateAugust 16, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2004 (22 years in practice)
Group practice St. Joseph Hospital Of Nashua Nh — 268 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients296
Services billed 801 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at St Joseph Hospital of Nashua Nh

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 268 clinicians in the practice; 12 are shown here.

Other providers in Manchester