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

Dr. Dalia M Nassman, DO

Individual provider Emergency Medicine Physician · NPI 1639410921

Dr. Dalia M Nassman, DO practises Emergency Medicine in Upland, California. Qualified in 2013, 13 years ago. Practices with Mountain View Emergency Physicians Medical Group Inc, a 25-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
13
Licensed in
CA
In the registry since
2013
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

999 San Bernardino Rd
Upland, CA 91786
Phone: (909) 985-2811
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 999 San Bernardino Rd, Upland, CA 91786-4920 — (909) 985-2811

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 20A13662 (CA)

Record details

NPI number1639410921
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 12, 2013
Last updated in NPPESJanuary 2, 2019

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mountain View Emergency Physicians Medical Group Inc — 25 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 patients403
Services billed 615 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Mountain View Emergency Physicians Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 25 clinicians in the practice; 12 are shown here.

Other providers in Upland