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

Christina Yen, MD

Individual provider Infectious Disease Physician · NPI 1154718922

Christina Yen, MD is an Internal Medicine in Portland, Maine. Qualified in 2015, 11 years ago. Practices with Mercy Hospital, a 308-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts, Maine and Texas.

Years since qualifying
11
Licensed in
MA, ME, TX
In the registry since
2015
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

22 Bramhall St
Portland, ME 04102-3134
Phone: (207) 662-0111
Show map & directions

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence MD27458 (ME)
Infectious Disease Physician Taxonomy 207RI0200X · Licence T3220 (TX)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (MA)

Record details

NPI number1154718922
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 20, 2015
Last updated in NPPESNovember 6, 2023
Certification dateNovember 6, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Mercy Hospital — 308 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Portland