Physician Profile
Hovsep G. Mahdessian, MD is a healthcare provider in Palmdale, CA specializing in internal medicine. Medicare claims data shows Hovsep provided 233 services to 213 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and automated urinalysis test. This provider record is associated with NPI 1659544203.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
327 E PALMDALE BLVD
Palmdale, CA 93550
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Most searched procedures
Preventive and evaluation
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
Digestive
Exams & Consultations
Heart & Circulation
Heart health
Imaging referral
Immunizations
Lab tests
Lungs & Breathing
Metabolic & Weight
Minor procedures
Office procedures
Office Procedures
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
233 services · 213 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
17 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
77 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
58 | As often as other peers in Internal Medicine |
| Automated urinalysis test | Lab test | 81003 |
19 | Less often than most peers in Internal Medicine |
| Blood test, basic group of blood chemicals (calcium, total) | Lab test | 80048 |
18 | Less often than most peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
17 | Less often than most peers in Internal Medicine |
| Troponin (protein) analysis, quantitative | Lab test | 84484 |
15 | Less often than most peers in Internal Medicine |
| Coagulation function measurement, d-dimer; quantitative | Lab test | 85379 |
12 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Mahdessian is an internist in Palmdale, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Mahdessian is listed at 327 E Palmdale Blvd, Palmdale, CA 93550. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (661) 273-5888. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Mahdessian's National Provider Identifier is 1659544203. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Mahdessian attended Other, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
Dr. Mahdessian has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Mahdessian provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mahdessian. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.