Physician Profile
John J Hernandez, M.D.
Unclaimed ProfileAbout Dr. Hernandez
John J Hernandez, M.D. practices otolaryngology in Westlake Village, CA. John is a 1973 graduate of University of California, Geffen School of Medicine. John is also listed as specializing in otolaryngology (ent). Medicare claims data shows John provided 1,260 services to 783 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (818) 889-3230
- Email not available
Practice Locations
1250 LA VENTA DRIVE, SUITE 110
Westlake Village, CA 91361
Conditions Commonly Evaluated or Treated
Within Otolaryngology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
1,260 services · 783 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
437 |
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
26 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
416 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
312 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
69 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other otolaryngology specialists in Westlake Village 1
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1973 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of impacted ear wax 7
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Hernandez's specialty?
Dr. Hernandez is an otolaryngology in Westlake Village, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OTOLARYNGOLOGY”.
NPI registry
Where can I find Dr. Hernandez?
Dr. Hernandez is listed at 1250 LA VENTA DRIVE, SUITE 110, Westlake Village, CA 91361. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Hernandez?
The number on file is (818) 889-3230. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Hernandez?
Dr. Hernandez's National Provider Identifier is 1043363997. 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
What is Dr. Hernandez's medical education?
Dr. Hernandez attended University of California, Geffen School of Medicine, graduating in 1973. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Hernandez have?
Dr. Hernandez has 53 years experience. Calculated from a graduation year of 1973, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Hernandez known for?
According to Medicare billing data, Dr. Hernandez performs procedures including removal of impacted ear wax and diagnostic exam of voice box using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Hernandez's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hernandez. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.