DR. HOVSEP GHEVONT MAHDESSIAN (MD) – Internal Medicine Physician, NPI 1659544203
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
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Provider Addresses for DR. HOVSEP GHEVONT MAHDESSIAN (MD)
327, East Palmdale Boulevard, Palmdale, Los Angeles County, California, 93550, United States
PALMDALE, CA 93550
Phone: (661) 273-5888
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $16.
Total Amount is formed as General ($16) + Research ($0) + Ownership ($0) = $16.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Salix Pharmaceuticals, a division of Bausch Health US, LLC ($16).
Total Amount
$16
General + Research + Ownership
Payments
1
Total payment records
General Amount
$16
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $16 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2009-06-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20090610000584 | I | Internal Medicine | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 73 | 69 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 24 | 23 | $0 |
| 81003 | Automated urinalysis test | 17 | 17 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 15 | 15 | $0 |
| 94640 | Inhalation treatment for airway obstruction or sputum production | 12 | 11 | $0 |
Insurance plans in this area (ZIP 93550)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GENERAL PRACTICE | CA | 94060 | Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration | 49 | 32 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Emergency Medicine | CA | |
| Family Practice | CA | |
| Internal Medicine | CA | |
| Emergency Medicine | NY | |
| - | CA | |
| Internal Medicine | CA | |
| Internal Medicine | CA | |
| Family Practice | CA | |
| - | CA |
Reviews
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