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

Individual provider Internal Medicine Physician · NPI 1659544203

Dr. Hovsep Ghevont Mahdessian, MD is an Internal Medicine in Palmdale, California. Qualified in 2000, 26 years ago. Practices with Roy Medical Group Inc, a 4-clinician group and accepts Medicare assignment. Licensed in California and Illinois.

Years since qualifying
26
Licensed in
CA, IL
In the registry since
2008
Specialties on file
2
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

327 E Palmdale Blvd
Palmdale, CA 93550-7139
Phone: (661) 273-5888
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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 A102305 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence O36.120147 (IL)

Record details

NPI number1659544203
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 3, 2008
Last updated in NPPESNovember 23, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesFAMILY PRACTICE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Roy Medical Group Inc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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