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

Mark T. Chen, DO

Individual provider Anesthesiology Physician · NPI 1568417152

Mark T. Chen, DO practises Anesthesiology in Upland, California. Qualified in 1985, 41 years ago. Practices with Allied Anesthesia Medical Group Inc, a 184-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
41
Licensed in
CA
In the registry since
2006
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 →

Practice location Address checks out

999 San Bernardino Rd
Upland, CA 91786-4920
Phone: (909) 920-4851
Show map & directions

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

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 20A5641 (CA)

Record details

NPI number1568417152
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 23, 2006
Last updated in NPPESJanuary 31, 2020
Certification dateJanuary 31, 2020

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Group practice Allied Anesthesia Medical Group Inc — 184 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 patients97
Services billed 130 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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. Those with a page here are linked.

Colleagues at Allied Anesthesia Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 184 clinicians in the practice; 12 are shown here.

Other providers in Upland