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

Dr. Lauren Demaris, DO

Individual provider Internal Medicine Physician · NPI 1124640107

Dr. Lauren Demaris, DO is an Internal Medicine in Portsmouth, New Hampshire. Qualified in 2020, 6 years ago. Practices with Vantage Healthcare LLC, a 69-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
6
Licensed in
NH
In the registry since
2020
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

333 Borthwick Ave Ste 100
Portsmouth, NH 03801-4198
Phone: (603) 436-5110
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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 25384 (NH)

Record details

NPI number1124640107
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 12, 2020
Last updated in NPPESJuly 31, 2024
Certification dateJuly 31, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Vantage Healthcare Llc — 69 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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