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

Dr. Eric Lonergan, MD

Individual provider Family Medicine Physician · NPI 1124188925

Dr. Eric Lonergan, MD is registered under Family Practice in Middletown, New York. Graduated from University of Vermont College of Medicine in 2003, 23 years ago. Practices with Crystal Run Healthcare Physicians LLP, a 366-clinician group and accepts Medicare assignment. Licensed in Maine, Montana, New Hampshire and New Jersey and 1 more.

Years since qualifying
23
Trained at
University of Vermont College of Medicine
Licensed in
ME, MT, NH, NJ, NY
In the registry since
2006
Specialties on file
5
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

155 Crystal Run Rd
Middletown, NY 10941-4028
Phone: (845) 703-6999
Fax: (845) 703-6297
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 287843 (NY)
Family Medicine Physician Taxonomy 207Q00000X · Licence 13679 (NH)
Family Medicine Physician Taxonomy 207Q00000X · Licence 52461 (MT)
Family Medicine Physician Taxonomy 207Q00000X · Licence 25MA08009200 (NJ)
Family Medicine Physician Taxonomy 207Q00000X · Licence 016965 (ME)

Record details

NPI number1124188925
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 11, 2006
Last updated in NPPESOctober 9, 2020
Certification dateOctober 9, 2020

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF VERMONT COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Crystal Run Healthcare Physicians Llp — 366 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 patients448
Services billed 1,774 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.

Colleagues at Crystal Run Healthcare Physicians LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 366 clinicians in the practice; 12 are shown here.

Other providers in Middletown